CA2150063C - Completion of intelligent network telephone calls - Google Patents
Completion of intelligent network telephone callsInfo
- Publication number
- CA2150063C CA2150063C CA002150063A CA2150063A CA2150063C CA 2150063 C CA2150063 C CA 2150063C CA 002150063 A CA002150063 A CA 002150063A CA 2150063 A CA2150063 A CA 2150063A CA 2150063 C CA2150063 C CA 2150063C
- Authority
- CA
- Canada
- Prior art keywords
- network
- dialed
- call
- routing information
- telephone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
- H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc
- H04M1/2745—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips
- H04M1/2753—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips providing data content
- H04M1/2757—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips providing data content by data transmission, e.g. downloading
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
- H04Q3/0029—Provisions for intelligent networking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13532—Indexing scheme relating to selecting arrangements in general and for multiplex systems mobile networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13541—Indexing scheme relating to selecting arrangements in general and for multiplex systems routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13547—Indexing scheme relating to selecting arrangements in general and for multiplex systems subscriber, e.g. profile, database, database access
Abstract
Intelligent network telephone calls are processed by an intelligent terminal which cooperates with network elements such as the database that contains information with respect to such calls. When a call requiring intelligent network treatment is first made from an intelligent terminal, the terminal does not have the requisite information to complete the call; the call is thus processed by network elements such as the originating switch and the network database which attempt to find routing information for the call. However, if the call contains an indication that (a) the calling party requests a down load, and the database record associated with the dialed number indicates that routing information stored in the database is marked for down loading, then the routing information is down loaded and stored in the intelligent terminal. When a subsequent call to the same number and therefore requiring the same treatment is again made, the intelligent terminal now contains the requisite routing information needed to complete the call. In this circumstance, the call does not have to be processed by intelligent network elements such as the network database. The routing information can be a destination number, or an indication of the particular network (e.g. wireline, cellular or CATV) that will carry the call, or other similar information.
Description
COMPLETION OF INTELLIGENT NETWORK
TELEPHONE CALLS
Technical Field This invention relates generally to appa~ s and method for completing intelligent network telephone calls, i.e., calls that normally require the retrieval of stored information from a network ~l~t~b~ce in order to route or process the call, and, in particular, to completion of such telephone calls through cooperation between the intelligent network and an intelligent terminal, i.e., a terminal that has the capability to store information and to pe.rollll logical operations using such inforrnation.
l~r~ground Of the Invention Intelligent network telephone call proceccing is now quite common. For example, when an "800" or "toll free" number is dialed, the call can be routed to a regular telephone number, and the charge for that call is billed to the called number.
In order to process the call, a ~l~t~ ce is queried to determine or define the actual destin~tion for the call. Routing or other h~n~lling of the call can thus can involve not only the dialed nurnber, but also various other factors, such as the location where the call origin~te~ information in-lic~tin~ the history of the caller, the day of the week or the time of day that the call is being made, and so on. An example of network based intelligent call routing is contained in U.S. Patent 4,191,860 issued to R. P. Weber on March 4, 1980. Many details ofthe intellig~ont network and the features offered in it are set forth in special Report SR-NPL-001623, issued by Bellcore in June 1990 and entitled "Advanced Intelligent Network Release I
Network and Operations Plan". Other information relating to the intelligent network may be found in the Q. 1200 series of recomm~n~i~tions p.epared by the Intern~tional Telecommunications Union Telecornrnunications Standards Sector (ITU-TSS, forrnerly known as CCITT), and in an article entitled "AT&T's Global Intelligent Network Architecture" by Kettler et al. in the AT&T Technical Journal, September/October 1992, at page 30.
.
Summary of th~ lnvention We have found that the process of repeatedly ~cceeein~ a network ~t~baee or other similar network-based storage element to determine the routing or otherh~n~ling of intelligent network telephone calls can be inefficient and time consuming. In accordance with the present invention, intelligent network telephone calls are processed by an intelligent terminal which cooperates with network elements such as the ~l~t~b~ee that contains information with respect to such calls.
When a call requiring intelligent network Llc~n~rnt is first made from an intelligent terminal, the tçnnin~l does not have the requisite information to complete the call;
in this circllrn~t~nce, the call is processed by network elements such as the origin~tin~ switch and/or the network f~t~b~ee to d~ f a destin~tion number (or other information used for routing purposes) ~eeoci~tçd with the dialed number.
However, if the call contains an indication that (a) the calling party requests a down load, and (b) the ~l~t~baee record associated with the dialed nurnber indicates that the destin~tion number stored in the fl~t~ ce is marked for down loading, then the destin~tion number is down loaded and stored in the intelligent terrnin~l. (As used hereinafter, '~estin~tion nurnber" includes any type of h~~ dlion associated with a particular dialed number that can be used to route or complete calls placed to that dialed nurnber.) When a subsequent call is made to the same dialed number (and therefore would require the same tre~tm~nt), the intelligent terrnin~l now contains the requisite ~lestin~tion number needed to complete the call. In this circ--nnet~n~e, the call does not have to be procee.eed by network elements such as the network ~l~t~ee to find a ~,l;- A1ion number associated with the dialed number. As a result, the speed and efficiency of call setup and procee~ g is increased.
In one specific embodiment of the invention, the intelligent terminal includes a memory for storing translations between dialed 800 telephone numbers and routing numbers that correspond to those dialed numbers. When an 800 call is made, the digits of the dialed number are collected and compared, illustratively on a digit by digit basis, to the numbers in the memory. If no match is found, the dialed CA 021~0063 1998-0~-29 number is transmitted to the origin~ting switch, and a query message is sent from that switch to a service control point (SCP). The SCP translates the 800 number to the al)plopliate destination number, which is returned to the origin~ting switch, so that the call can be routed to the proper destin~tion. The origin~ting switch also transmits the 5 destination number to the intelligent terminal, for storage in the memory in association with the dialed 800 number. When the same 800 number is subsequently called, the dialed number can now be located in the memory. The associated destin~tion number is retrieved and sent to the origin~ting switch, which routes the call. In this situation, a query to the SCP is not necessary, and call setup time is accordingly advantageously reduced.It is noted that in this embodiment of the invention, a call subsequently placed to an 800 number from an intelligent terminal will lose its "toll free" status, since the call will be made using an ordinary (non-toll free) destination or routing number. This, however, may be an acceptable trade-off, considering, for example, the advantage of faster call set-up time and the ability to place such calls over the network preferred by the calling 1 5 party.
In another embodiment of the invention, an intelligent tf~rmin~l is capable of routing an outbound call over several diverse types of networks, such as a cable television network and a cellular telephone network, in addition to the ordinary telephone network.
When a call is first made from the intelligent t~rmin~l to a particular number, the call is 20 routed in accordance with a default routing scheme, and routing information is obtained from a d~t~b~e in the default network and returned to and stored in the intelligent terminal. When a call to the same number is next made from that intelligent terminal, the call may be routed over a di~lent type of network.
In accordance with one aspect of the present invention there is provided a method 25 for completing an intelligent network telephone call placed by dialing a dialed number from a terrnin~l including a memory, co~ isi~lg the steps of (a) determining if said memory in said termin~l contains routing information corresponding to said dialed number, (b) (i) if so, providing said routing information to elements in the telephone network in order to complete said call, and (ii) if not, a. providing said dialed number to said 30 elements in the telephone network in order to obtain routing information with which to complete said call, and b. storing said routing information in said memory in said terminal for use in completing subsequent calls to said dialed number.
CA 021~0063 1998-0~-29 3a In accordance with another aspect of the present invention there is provided an intelligent network system comprising an intelligent terminal including a memory for storing translations between dialed 800 telephone numbers and routing numbers that correspond to those dialed numbers; means, responsive to dialing an 800 number, for 5 collecting the digits of the dialed number and comparing said digits to the numbers in the memory; an origin~ting switch; means for transmitting the dialed number to the origin~tin~
switch if no match is found by said collecting and comparing means; a service control point (SCP); means for origin~ting and routing a query message to said service control point (SCP); means in said SCP for translating said 800 number to an a~rol)l;ate routing 10 number and for returning said routing number to said origin~ting switch; and means in said origin~ting switch for transmitting said routing number to said intelligent terminal for storage in said memory in association with said 800 number.
In accordance with yet another aspect of the present invention there is providedapparatus for completing calls via a communications network, said apparatus comprising a 15 memory cont~ining routing information associated with dialed numbers; means responsive to a particular dialed number for determining if there is an entry in said memory containing said particular dialed number and its associated particular routing information;
and means for (a) outputting to said communications network, said particular routing information stored in said memory, if an entry is present in said memory for said 20 particular dialed number, and (b) (i) generating a query to an element in said communications network, said query including said particular dialed number, and (ii) storing the response to said query received from said element in said communications network, said response including the particular routing information associated with said particular dialed number, in said memory, if an entry is not present in said memory for 25 said particular dialed number.
Brief D~-: ;"lion of the Drawin~s The present invention will be more fully appreciated by consideration of the following Detailed Description, which should be read in light of the accompanying drawing in which:
_ 21S0063 Fig. 1 is a block diagram illustrating the overall arrangement of a system by which an intelligent terminal cooperates with elements in an intelligent telecommunications network in order to route intelligent network telephone calls;
Fig. 2 illustrates the process performed in the intelligent terminal 101 of Fig.
5 1;
Fig. 3 illustrates the process pc,rol."ed in a switch in the intelligent networkIlOofFig. I;
- Figs. 4 and 5 illustrate the format of records contained in memory 108 within intelligent terminal 101 of Fig. 1, and in dz~tz~bz~e 112 within network 110 of 10 Fig. 1, respectively;
Fig. 6 is a block diagram illustrating the overall arrangement of another embodiment of the present invention, in which calls ori~inztted from an intelligent terminal may be routed over diverse types of net~,vorks, and Fig. 7 illustrates the format of records co"lained in the number translation memory within intelligent terminal 601 of Fig. 6 as well as in 11zttztbztce 612 of Fig.
6.
12~iled l)eScr~
Referring first to Fig. I, there is shown a block diagram illustrating the overall arrangement of a system by which an intelligent terrninztl 101 cooperates 20 with elements in an intelligent telecont-icz~tions network decignz~t~-d generally as network I 10, in order to route intelligent network telephone calls. Network 1 10 includes several interconnected switches 111 which are each served by a common, centralized dzttSthzt~e I 12. Switches I I I may each include an internal cache memory 114. Terminal 101 is co~ P~led to switch 111-1 via a local loop 100, so that switch 111-1 is the 'loriginztting switch" when a call is initiated in terrninz~l 101. A called party served by a station 120 is conn~cted to another one of the switches, namely switch 111-2, which is the terrninztting switch when the call is directed to that station. Note that the elements of Fig. I are shown in greatly simplified form, for ease of explanation; accordingly other network elements normally associated withlocal and interexchange carriers are not set)al~tely shown.
-In one specific arrangement of the present invention, switches 111 can each be a #5ESS electronic program controlled switching system available from AT&T, while cl~t~b~ce 112 can be a No. 2 Network Control Point (NCP) also available from AT&T. In subsequent portions of this specification, ~t~b~se 1 12 is referred to as a "Service Control Point" (SCP), since that is the most common term used by persons skilled in the art. Switches 111 and ~i~t~hace 112 may be interconnected with each other by elements (such as signal transfer points, not shown) in a common channel ~ign~ling system, such as SS7 system, such that queries may be made by a switch I 1 1 to ~l~t~b~ce 1 12, and information retrieved in response to the queries may be returned to the switch, all in the form of data messages. Si~lin~ paths are shown as dotted lines in Fig. 1.
Intelligent terminal 101 includes the normal co.,.pon~ of a telephone station, such as a telephone line circuit 105, which couples te~nin~l 101 to network I 10 via local loop 100, and a microphone 102 and a speaker 103, connected to line circuit 105, which act as audio input and output devices, .~ eclively. At the heart of terminal 101 is a microprocessor 106, which acts as a telephone controller and serves to interconnect the other various elçmPnt~ of the tçrmin~l. In particular, a dial pad 104 and its associated touch tone generator are connPctçcl to microprocessor 106, and are used to allow a user of the tç rnin~l to enter a dialed number. Feature control buttons 109, also conn~cted to microprocessor 106, when actuated, signalthe microprocessor to enable or disable selected p.ocesses or functionalities, which are described in more detail below. Terminal 101 also includes a number slalion memory 108 that can store records of the type shown in Fig. 4 on a long term basis, and a program memory 107 that can store program instructions that control the operation of microprocessor 106, thereby enabling the various components of terrninal 101 to perform the process described below in connectionwith Fig. 2. If desired, terminal 101 may include a display 1 15, such as an LCDdisplay, which can present alphanumeric inforrnation to a user.
It is to be noted here that the components illustrated in Fig. I are functional in nature, and that persons skilled in the art will recognize that the same functions can be pelrol."ed by various kinds of hardware. Some comment~ will illustrate this point. First, it will be recognized that the functions p~.roll~led in program memory 107 and number translation memory 108 can be combined, and that this memory can be a RAM chip, any other type of semiconductor memory, or any other memory 5 means that is capable of storing information and being queried to permit retrieval of such information. Second, it will be recognized that the intelligent terminal can be implemented in a personal computer equipped with an appropriate telephone interface board. In such an implernent~tion, the telephone interface board provides the functions of telephone line circuit 105, dial pad 104 and its associated touch tone genc.~tor, microphone 102 and speaker 103, and the conventional colllpon~ of the computer itself provide the functions of microprocessor 106, display 1 15, feature control buttons 109, number translation memory 108 and program memory 107.
Fig. 2 illustrates the process, initi~ted in step 200 by the dialing of an outgoing telephone call, that is p~.Ç~lnled using the program instructions stored in program memory 107 in the intelligent terminal 101 of Fig. 1. In step 201, as each digit of the dialed number entered on key pad 104, it is e~Amin~d in order to determine, in step 202, if the number (i.e., the sequence of digits) dialed thus far can possibly match one of the numbers stored in memory 108. (The reasons for pc.rolllling this process on a digit by digit basis are set forth below.) If the result of step 202 is negative, it is concluded that the call cannot be processed with information stored in te~ ninAI 101. In this event, proces~ing proceeds with step 205, wherein the already dialed digits as well as any subsequently dialed digits are llAn~n~ ed to the ori~in~ting switch 111-1. In addition to transmitting the dialed number, station 101 is arranged, in accordance with the invention, to request from switch I I I - I, in step 207, the down loading of a destinAtion number. This request may be made for all calls or, preferably, may be made only selectively. In the latter case, the request for down loading may be made by station 101 only if the dialednumber is recognized as the type of number (e.g., the NPA of the dialed number indicates the call is a "500", "700", "800" or "900" call) that may have an associated '~, destin~tion number of a type that can be down loaded. Down loading may also be m~n~ ly requested by the operation of one of the feature control buttons 109 if the caller suspects the network is using a ~l~t~h~ce to route the call.
Depending upon the particular arrangement of the elements in network 110, S switch 111 - 1 may, responsive to receipt of a dialed number recognized as a number requiring "intelligent call processing", launch a query, via the signAIin~ network, to cl~t~b~ce 112, or query its own local cache memory 114-1, in order to retrieve a~estinAtion number that is associated with the dialed number. After the query isl~llnch~ ~I the destin~tion number CO~ onding to the dialed number may be 10 ascertained and returned to switch 111 - 1, if there was an app~oll-iate entry in d~t~bA~e 112 or the cache memory ~c~oc;~ted with switch 111-1. This destination number is then used to route the call through the other elements in network 110 to the app~.,iate destinAtion, such as station 120. At the same time, the ~t~hA~e or cache memory indicates that the rellicvcd destinAtion number is or is not "down 15 loadable". (This is described in more detail in connection with step 303 in Fig. 3.) In either event, after a request to down load a destinAtion number is made in step 207, a deterrnin~tion is made in step 208 as to whether a ~lestin~tion number was in fact returned to the station. If so, that number is stored in memory 108 of station 101 in step 209, and the process of Fig. 2 is te. . . lil .A~ecl in step 206. If the result of step 208 is negative, the process of Fig. 2 is also te.. inAleci in step 206.
If the result of step 202 is positive, indicating that the dialed number may possibly match a stored number in memory 108, memory 108 is queried and a ~l~tf ..n;l~Al;on is next made in step 203 as to whether memory 108, in fact, contains an entry for the dialed number and the col.c~nding d~l;r.~;on or routing number 25 associated with that dialed number. If a negative result is obtained in step 203, the process of digit by digit chPr~ing p~,.rollllcd in steps 201 and 202 is continued. As soon as it is determined that no match is possible (eventually, it may be determined that the entire dialed number is not stored in memory 108), the process beginning with step 205, already described~ will occur.
On the other hand, if the determination made in step 203 is positive, indicating that the dialed number and its associated clestin~tion number are already stored in memory 108, then the associated ~iestin~tion number is sent to switch 111-I in place of the dialed nurnber, in step 204, and this nurnber, rather than the dialed S number, is used by that switch to complete the call. Note that since the destination number is now a "conventional" number rather than an intelligent network number,the call will be routed without the need for switch I 11 - I to access its cache memory 114-1 or ~l~t~b~ee 112 via the SS7 eign~ling network. If desired, the destin~tion number can be displayed on display 115, to indicate to the caller that the call placed 10 to the dialed nurnber is actually being placed to a number di~.~.lt from the number dialed. If the caller wishes, he or she may hang up at this time and thereafter disable the present invention by activation of one of the feature control buttons 109. If this ls done, the test in step 202 is forced to a negative result, whereby the dialed digits are used to complete the call.
As indicated above, the process of Fig. 2, in steps 201 and 202, performs a digit by digit check of memory 108 to ~et~ ....;n~ if the dialed number is, in fact, a number for which a memory match is NOT possible. This arrangement is preferred over an imple-..Pnl~lion that collects and ~.,hles the entire dialed telephone number, because an earlier decision can be made in step 202, particularly if use of the present invention is limited to dialed numbers that begin with a preselectedgroup of NPA's, such as toll &ee or "800" numbers and other special service numbers that have NPA's of 900, 700 or 500. After eY~min~tion of only a few, i.e., three or four, digits, such as the " I " indicating a long ~iet~nce call plus the three digits of the NPA, a ~lete~rnin~tion can already be made that it is not n~ceee~ry to further query memory 108 in step 203.
The process illustrated in Fig. 2 may be modified, if desired, to remove information &om number translation memory 107 on a periodic or timed basis, so that there can be some reasonable assurance that the ~lestin~tion number associated with a particular dialed number is the "current" ~estin~tion number. This aspect of the invention may be accomplished by associating a time stamp with each -destination number stored in memory 107, indicating the date and/or time at which the information was stored. Then, in step 202 of Fig. 2, the time stamp can be checked to make sure that the difference between the current time and the time indicated by the time stamp is not too great. If a desired time is exceeded, the stored 5 information is removed and/or ignored. As an alternative, the contents of memory 107 can be checked on a regular basis to remove "stale" information.
Fig. 3 illustrates the process performed in the origin~ting switch, such as switch 111 - I in the intelligent network 110 of Fig. 1, in accordance with the present invention. As stated previously, depending upon the particular arrangement of the elements in network 110, switch 111 - I may be arranged to recognize a dialed number as a nurnber requiring "intelligent call l,.ocessin~". In this type of imple~ nl~ion, calls that do not require "intelligent call processing" are treated conventionally, me~ning that it is not necessa"~ to launch a query to network ~i~t~b~e 112 or to query the local cache or other memory 114-1 associated with 15 origin~ting switch 111-1. In this category are calls that would otherwise require "intelligent call processing", but for which clestin~tion or routing numbers have already been stored in termin~l 101. For these calls, as stated previously, the information found in memory 108, re~,.ese~..ling the ~stin~tion number that is associated with the dialed telephone number, is sent to the origin~ting switch in step 204 of Fig. 2, so that processing, from the point of view of switch 111-1, is nodifferent from the ~.oces~in~ that occurs when an ol.lin~y call to that number is m~n..~lly dialed by a caller.
The process of Fig. 3 is initiated in step 300, when a dialed number is received from a terminal such as intelligent termin~l 101. In step 301, a 25 determination is made as to whether the dialed number is a nurnber that requires intelligent call processing~ and whether the call is accompanied by a request for down loading, such as the request generated in step 207 of Fig. 2. If the result of the test pe.fo...led in step 301 is negative, then the call is processed conventionally in step 302, using the dialed nurnber information received from station 101. Note here 30 that there will be no request for down loading (and the result of the test performed in - ' 2150063 '~, ' 10 step 301 will therefore be negative) when the destin~tion number associated with the dialed number was already stored in memory 108, so that, in the process of Fig. 2, step 203 produced a positive result and the stored information was transmitted in place of the dialed digits in step 204. There will also be no request for down loading 5 on intelligent network calls dialed from "dumb" telephones, i.e., ordinary telephones that do not have the processing capability or otherwise cannot or do not implement the intelligence of the present invention.
If the result of the test performed in step 301 is positive, then a determination is made in step 303 as to whether switch 111-1 has a destin~tion number that can be 10 down loaded. This decision can depend upon a number of factors that were alluded to above, in connection with the description of step 208 in Fig. 2. Several examples will illustrate: First, even though the dialed number may be a number that normally co.l~onds to a number involving an intelligent network telephone call, there may not be a co~ ,ponding destin~tion number available in ~t~b~e 112 or in the cache 15 memory 114 associated with the origin~ting switch, or the dçstin~tion number may be corrupted, obsolete or otherwise unavailable. Second, there may not be a single d~stin~tion or routing number associated with a particular dialed number, but, rather, several destin~tion numbers that are selected based upon some predetermined logical analysis. (In the latter event, an alternative implem~nt~tion of the present 20 invention may be used, as described more fully below.) Third, the subscriber associated with certain intelligent network (e.g. 800 number) telephone calls may not wish to divulge the destin~tion number associated with the dialed number.
If the result of the determination made in step 303 is negative, then down loading does not occur. Rather, the process continues with step 302, in which the 25 call is completed in the conventional manner. On the other hand, if the result of the deterrnination made in step 303 is positive, then the destin~tion number associated with the dialed number is sent from switch 111-1 to termin~l 101 in step 305, and stored in memory 108. The call is also, in this i~ e, then completed in the conventional manner, in step 302.
21~0063 Figs. 4 and 5 illustrate, respectively, the formats of records contained in memory 108 within terminal 101 of Fig. I and of records contained in database 112 in network 110, or in cache memory 114 in switches 111. In Fig. 4, field 401 contains various dialed numbers, and the rem~indçr of each line contains 5 information associated with the particular dialed number indicated in field 401. For each dialed number in field 401, field 402 contains an associated dçstin~tion number that was provided by switch 111 - I in step 305 of Fig. 3 and stored in memory 108 in step 209 of Fig. 2. It will be seen from Fig. 5 that the records stored in 11~t~b~e 112 may have a similar format, in that field 501 contains dialed telephone numbers and 10 field 502 contains associated destin~tion numbers. Certain dialed nurnbers are associated with multiple c~çstin~tion numbers, depending upon the time of day value entered in field 503. Thus, the entry corresponding to the dialed number 1-800-123-4567 contains a first destination number that applies to calls ori~in~t~d from 12:00 midnight until 7:00 A.M., a second destin~tion number that applies to calls madefrom 7:00 A.M. to 6:00 P.M., and a third dçstin~tion number that applies to calls made at other times. ~n the situation where one dialed number is associated withmultiple dçstin~tion numbers, the destin~tion numbers may be considered to be "non-downloadable", and for this purpose, field 504 would contain a "NO" indicator ~eples~ ng that fact that particular dçstin~tion number entries in .l~t~ e 112 cannot be down loaded. As an alternative, however, the present invention may be modified so that all of the dçstin~tion numbers, as well as the logical rule (based upon criteria obtained from field 503) for choosing among those numbers, is downloaded to tçrmin~l 101 in res~onse to the initial initiation of a telephone call to the dialed nurnber associated with those destin~tion numbers. In this event, terminal 101 must be arranged, in step 204, to both execute the logical rule and then to select the appropriate stored number, deperltling upon the outcome when the logical rule is applied at the time that the call is made. Otherwise, the down load will not be done.
From the foregoing description, it will be recognized that if the present invention is implem~nted in the context of toll-free (i.e., 800 number) calls, then calls made using destin~tion numbers or other information in the intelligent terminals will no longer enjoy toll free status, since these calls will not be recognized by network elements as being directed to a toll free number. This, however, may be advantageous in several situations. First, the ~lestin~tion telephone number stored in the intelligent terminal may turn out to be a number that is within the local calling area of the origination station, so that there will be no additional charge imposed for such calls over the flat rate billing already imposed. Second, the present invention will allow more rapid redial of 800 (or any other intelligent telephone) numbers, which would be very illlpOl l~.t in the context, for example, of a radio or television contest.
Third, by down loading the de~ t;on nurnber and then having the intelligent terrninal in effect dial that number, the call can then be placed over the network using the Preselected Interexchange Carrier (PIC) of the calling party. This will be illu~l~ated by an exarnple: If the number 800-123-4567 is a number normally carried by MCI, and if the ~l~pstin~tion number is actually 212-987-6543, then, by dialing 1212-987-6543, the call will be directed to the same destin~tion, but over the facilities of the p.~re.-~d carrier and not nPcee~rily MCI. This allows a caller to obtain and take advantage of the unique capabilities that one carrier may have over the other, such as the True Voice (TM) capability available only from AT&T.
Fourth, by down loading the destin~tion nurnber to the intelligent terminal, the calling party has the opportunity to know the location of the person or service that they are calling. This capability is normally not available to the caller when conventional 800 call processing occurs in the network, since a person dialing aservice center thought to be on the East Coast could easily turn out to be on the West Coast.
Referring now to Fig. 6, there is shown a block diagram illustrating the overall arrangement of another embodiment of the present invention, in which network intelligence in the form of routing information can be downloaded to a multiple mode intelligent terrninal 601 so that subsequent calls origin~ted from that terrninal may be optimally routed over diverse types of networks. As shown in Fig.
6, intelligent te~nin~l 601 is connected to several networks of diverse types, including a first wireline connection to a Local Exchange Carrier (LEC) network 605 and to an interconnected Interexchange Carrier (IXC) network 610, a second wireless connection to a cellular telephone network 615, and a third coaxial or fiber 5 cable connection to a cable television (CATV) network 625. These multiple modeterminals replesent an extension of dual mode tennin~lc such as the Motorola MicroTAC (described in an article by Randy Oster and Gary Brush entitled "PCS:
Hands-on Communications for All", Telephony February 28, 1994, pages 31 -42) that can originate and receive calls over LEC and cellular networks, and can be 10 achieved simply by combining in one termin~l the functionalities now available in several different t~rrnin~l types. It is A~ ..ed that intelligent te rnin~l 601 includes the co""~one.,~ shown in Fig. 1, including a program memory that controls the operation of the terminal and a number translation memory that contains records associating a dialed number with routing instructions. Base~d upon instructions contained in the program memory, intelligent termin~l 601 op~,.dtes in a manner similar to that of terminal 101 of Fig. I, as illustrated in Fig. 2; deviations from the process shown in that figure are e~Jlailled below. Records contained in the number translation memory in tennin~l 601 are of the type illustrated in Fig. 7, discussed below.
When an intelligent network call is first origin~t~d from intelligent terminal 601, it may be ~ ..rd that there is no information in the number translation memory ~esoci~tin~ the dialed number to any stored routing information, and thatthe call is acco~ gly routed in accor~ce with default routing. For the purposes of description, default routing will be ~sl~med to be from terminal 601 through LEC
network 605 to switch 611-1 in IXC network 610. Because the call is recognized as an intelligent network call, a query is l~lmr~ ed to a ~i~t~b~ce 612, which returns routing information to switch 611 - I indicating how the call should be routed. In the embodiment of Fig. 6, the call can be routed, for example, to (a) LEC network 605 and then to a telephone 606, via a wireline connection, or (b) cellular network 615 and then to a wireless terminal 616 via a wireless connection, or (c) to CATV
- 215~063 network 625 and then to a set top box 626 and its ~CSoci~tç~l telephone 627 via a cable (coaxial or fiber or both) connection. The routing information retrieved from (l;~t~b~ce 612 can also indicate a sequence in which calls are applied to each of the diverse networks shown in Fig. 6.
In accordance with the present invention, the routing information obtained from ~t~b~ce 612 is transmitted to and stored in the number translation memory within intelligent termin~l 601, in association with the dialed number. As a, consequence, when the same dialed number is subsequently called, the number translation memory is consulted, and the routing info~ ation is retrieved. At this point, the call may be routed directly from terminal 601 to (a) LEC network 605 and/or IXC network 610, as a wireline call, (b) cellular network 615, as a wireless call, or (c) CATV network 625, as a CATV call. In addition, a sequence in which such networks are chosen in order to attempt call completion, may be specified.
By virtue of the arrangement just described, it will be seen that significant efficiencies are achieved. For example, a call from telTnin~l 601 to wireless terminal 616 is made as a wireless only call, using only cellular network 615, without the need to use other networks. Similarly, a call from tçnnin~l 601 to telephone 627 is made as a CATV call, using only CATV network 625.
Referring now to Fig. 7, there is shown one illustrative format for the records contained in ~l~t~b~ce 612 of Fig. 6, as well as within the number translation memory within intelligent terminal 601 of Fig. 6, once that memory has been populated with information downloaded from ~l~t~b~ce 612. Each line contains information ~csoci~tç~ with a particular dialed number indicated in field 701. Field 702, 703 and 704 l~ esent the priority ranking for each type of network to which a call to the number in field 701 can be routed, the n~ t~olks being LEC network 605, cellular network 615, and CATV network 625, re~ ively. Thus, for example, calls to (908) 949-7503 are routed as a first choice via CATV network 625, as a second choice via LEC network 605 and as a third choice via cellular network 615.
The sequence used for routing of calls placed to a different number is different.
Note here that other information, such as the clestin~tion numbers associated with a ~,150063 particular dialed number, as applicable to routing via a particular network, will also be included in the record, as shown in Figs. 4 and 5, unless there is a uniform dialing plan by which calls placed to a particular dialed number can be routed via diverse networks using the same number.
Persons skilled in the art will appreciate that various modification and adaptations may be made of the present invention. For example, although Fig. I
depicts implementation of the present invention in the context of a local exchange carrier (LEC) network, the invention can also be hllplc...l .lt d in an interexchange carrier (IXC) network. Also, although the invention has largely been described in the context of "500", "700", "800" or "900" number calls, it is to be understood that it may be practiced in connection with other "special" calls, such as those made to information service (e.g., 411), repair service (e.g. 61 l), and emelgellcy service (e.g. 9l l) . There are also network el~ ..c~ , commonly known as "adjuncts", which pclrol,.l both a ~l~t~b~ce and a switching function. Calls via these adjuncts 15 are handled with ~l~t~b~ce look ups, like an intelligent network call, but are not always accessed by easily identified codes such as "800" or "900" numbers. The techniques described in this application can also be used on calls placed via these adjuncts, and these calls are also thus to be considered a "intelligent network calls", even though they do not involve a dialed number with a "special service" type of20 NPA. Accordingly, the invention should be limited only by the appended claims.
TELEPHONE CALLS
Technical Field This invention relates generally to appa~ s and method for completing intelligent network telephone calls, i.e., calls that normally require the retrieval of stored information from a network ~l~t~b~ce in order to route or process the call, and, in particular, to completion of such telephone calls through cooperation between the intelligent network and an intelligent terminal, i.e., a terminal that has the capability to store information and to pe.rollll logical operations using such inforrnation.
l~r~ground Of the Invention Intelligent network telephone call proceccing is now quite common. For example, when an "800" or "toll free" number is dialed, the call can be routed to a regular telephone number, and the charge for that call is billed to the called number.
In order to process the call, a ~l~t~ ce is queried to determine or define the actual destin~tion for the call. Routing or other h~n~lling of the call can thus can involve not only the dialed nurnber, but also various other factors, such as the location where the call origin~te~ information in-lic~tin~ the history of the caller, the day of the week or the time of day that the call is being made, and so on. An example of network based intelligent call routing is contained in U.S. Patent 4,191,860 issued to R. P. Weber on March 4, 1980. Many details ofthe intellig~ont network and the features offered in it are set forth in special Report SR-NPL-001623, issued by Bellcore in June 1990 and entitled "Advanced Intelligent Network Release I
Network and Operations Plan". Other information relating to the intelligent network may be found in the Q. 1200 series of recomm~n~i~tions p.epared by the Intern~tional Telecommunications Union Telecornrnunications Standards Sector (ITU-TSS, forrnerly known as CCITT), and in an article entitled "AT&T's Global Intelligent Network Architecture" by Kettler et al. in the AT&T Technical Journal, September/October 1992, at page 30.
.
Summary of th~ lnvention We have found that the process of repeatedly ~cceeein~ a network ~t~baee or other similar network-based storage element to determine the routing or otherh~n~ling of intelligent network telephone calls can be inefficient and time consuming. In accordance with the present invention, intelligent network telephone calls are processed by an intelligent terminal which cooperates with network elements such as the ~l~t~b~ee that contains information with respect to such calls.
When a call requiring intelligent network Llc~n~rnt is first made from an intelligent terminal, the tçnnin~l does not have the requisite information to complete the call;
in this circllrn~t~nce, the call is processed by network elements such as the origin~tin~ switch and/or the network f~t~b~ee to d~ f a destin~tion number (or other information used for routing purposes) ~eeoci~tçd with the dialed number.
However, if the call contains an indication that (a) the calling party requests a down load, and (b) the ~l~t~baee record associated with the dialed nurnber indicates that the destin~tion number stored in the fl~t~ ce is marked for down loading, then the destin~tion number is down loaded and stored in the intelligent terrnin~l. (As used hereinafter, '~estin~tion nurnber" includes any type of h~~ dlion associated with a particular dialed number that can be used to route or complete calls placed to that dialed nurnber.) When a subsequent call is made to the same dialed number (and therefore would require the same tre~tm~nt), the intelligent terrnin~l now contains the requisite ~lestin~tion number needed to complete the call. In this circ--nnet~n~e, the call does not have to be procee.eed by network elements such as the network ~l~t~ee to find a ~,l;- A1ion number associated with the dialed number. As a result, the speed and efficiency of call setup and procee~ g is increased.
In one specific embodiment of the invention, the intelligent terminal includes a memory for storing translations between dialed 800 telephone numbers and routing numbers that correspond to those dialed numbers. When an 800 call is made, the digits of the dialed number are collected and compared, illustratively on a digit by digit basis, to the numbers in the memory. If no match is found, the dialed CA 021~0063 1998-0~-29 number is transmitted to the origin~ting switch, and a query message is sent from that switch to a service control point (SCP). The SCP translates the 800 number to the al)plopliate destination number, which is returned to the origin~ting switch, so that the call can be routed to the proper destin~tion. The origin~ting switch also transmits the 5 destination number to the intelligent terminal, for storage in the memory in association with the dialed 800 number. When the same 800 number is subsequently called, the dialed number can now be located in the memory. The associated destin~tion number is retrieved and sent to the origin~ting switch, which routes the call. In this situation, a query to the SCP is not necessary, and call setup time is accordingly advantageously reduced.It is noted that in this embodiment of the invention, a call subsequently placed to an 800 number from an intelligent terminal will lose its "toll free" status, since the call will be made using an ordinary (non-toll free) destination or routing number. This, however, may be an acceptable trade-off, considering, for example, the advantage of faster call set-up time and the ability to place such calls over the network preferred by the calling 1 5 party.
In another embodiment of the invention, an intelligent tf~rmin~l is capable of routing an outbound call over several diverse types of networks, such as a cable television network and a cellular telephone network, in addition to the ordinary telephone network.
When a call is first made from the intelligent t~rmin~l to a particular number, the call is 20 routed in accordance with a default routing scheme, and routing information is obtained from a d~t~b~e in the default network and returned to and stored in the intelligent terminal. When a call to the same number is next made from that intelligent terminal, the call may be routed over a di~lent type of network.
In accordance with one aspect of the present invention there is provided a method 25 for completing an intelligent network telephone call placed by dialing a dialed number from a terrnin~l including a memory, co~ isi~lg the steps of (a) determining if said memory in said termin~l contains routing information corresponding to said dialed number, (b) (i) if so, providing said routing information to elements in the telephone network in order to complete said call, and (ii) if not, a. providing said dialed number to said 30 elements in the telephone network in order to obtain routing information with which to complete said call, and b. storing said routing information in said memory in said terminal for use in completing subsequent calls to said dialed number.
CA 021~0063 1998-0~-29 3a In accordance with another aspect of the present invention there is provided an intelligent network system comprising an intelligent terminal including a memory for storing translations between dialed 800 telephone numbers and routing numbers that correspond to those dialed numbers; means, responsive to dialing an 800 number, for 5 collecting the digits of the dialed number and comparing said digits to the numbers in the memory; an origin~ting switch; means for transmitting the dialed number to the origin~tin~
switch if no match is found by said collecting and comparing means; a service control point (SCP); means for origin~ting and routing a query message to said service control point (SCP); means in said SCP for translating said 800 number to an a~rol)l;ate routing 10 number and for returning said routing number to said origin~ting switch; and means in said origin~ting switch for transmitting said routing number to said intelligent terminal for storage in said memory in association with said 800 number.
In accordance with yet another aspect of the present invention there is providedapparatus for completing calls via a communications network, said apparatus comprising a 15 memory cont~ining routing information associated with dialed numbers; means responsive to a particular dialed number for determining if there is an entry in said memory containing said particular dialed number and its associated particular routing information;
and means for (a) outputting to said communications network, said particular routing information stored in said memory, if an entry is present in said memory for said 20 particular dialed number, and (b) (i) generating a query to an element in said communications network, said query including said particular dialed number, and (ii) storing the response to said query received from said element in said communications network, said response including the particular routing information associated with said particular dialed number, in said memory, if an entry is not present in said memory for 25 said particular dialed number.
Brief D~-: ;"lion of the Drawin~s The present invention will be more fully appreciated by consideration of the following Detailed Description, which should be read in light of the accompanying drawing in which:
_ 21S0063 Fig. 1 is a block diagram illustrating the overall arrangement of a system by which an intelligent terminal cooperates with elements in an intelligent telecommunications network in order to route intelligent network telephone calls;
Fig. 2 illustrates the process performed in the intelligent terminal 101 of Fig.
5 1;
Fig. 3 illustrates the process pc,rol."ed in a switch in the intelligent networkIlOofFig. I;
- Figs. 4 and 5 illustrate the format of records contained in memory 108 within intelligent terminal 101 of Fig. 1, and in dz~tz~bz~e 112 within network 110 of 10 Fig. 1, respectively;
Fig. 6 is a block diagram illustrating the overall arrangement of another embodiment of the present invention, in which calls ori~inztted from an intelligent terminal may be routed over diverse types of net~,vorks, and Fig. 7 illustrates the format of records co"lained in the number translation memory within intelligent terminal 601 of Fig. 6 as well as in 11zttztbztce 612 of Fig.
6.
12~iled l)eScr~
Referring first to Fig. I, there is shown a block diagram illustrating the overall arrangement of a system by which an intelligent terrninztl 101 cooperates 20 with elements in an intelligent telecont-icz~tions network decignz~t~-d generally as network I 10, in order to route intelligent network telephone calls. Network 1 10 includes several interconnected switches 111 which are each served by a common, centralized dzttSthzt~e I 12. Switches I I I may each include an internal cache memory 114. Terminal 101 is co~ P~led to switch 111-1 via a local loop 100, so that switch 111-1 is the 'loriginztting switch" when a call is initiated in terrninz~l 101. A called party served by a station 120 is conn~cted to another one of the switches, namely switch 111-2, which is the terrninztting switch when the call is directed to that station. Note that the elements of Fig. I are shown in greatly simplified form, for ease of explanation; accordingly other network elements normally associated withlocal and interexchange carriers are not set)al~tely shown.
-In one specific arrangement of the present invention, switches 111 can each be a #5ESS electronic program controlled switching system available from AT&T, while cl~t~b~ce 112 can be a No. 2 Network Control Point (NCP) also available from AT&T. In subsequent portions of this specification, ~t~b~se 1 12 is referred to as a "Service Control Point" (SCP), since that is the most common term used by persons skilled in the art. Switches 111 and ~i~t~hace 112 may be interconnected with each other by elements (such as signal transfer points, not shown) in a common channel ~ign~ling system, such as SS7 system, such that queries may be made by a switch I 1 1 to ~l~t~b~ce 1 12, and information retrieved in response to the queries may be returned to the switch, all in the form of data messages. Si~lin~ paths are shown as dotted lines in Fig. 1.
Intelligent terminal 101 includes the normal co.,.pon~ of a telephone station, such as a telephone line circuit 105, which couples te~nin~l 101 to network I 10 via local loop 100, and a microphone 102 and a speaker 103, connected to line circuit 105, which act as audio input and output devices, .~ eclively. At the heart of terminal 101 is a microprocessor 106, which acts as a telephone controller and serves to interconnect the other various elçmPnt~ of the tçrmin~l. In particular, a dial pad 104 and its associated touch tone generator are connPctçcl to microprocessor 106, and are used to allow a user of the tç rnin~l to enter a dialed number. Feature control buttons 109, also conn~cted to microprocessor 106, when actuated, signalthe microprocessor to enable or disable selected p.ocesses or functionalities, which are described in more detail below. Terminal 101 also includes a number slalion memory 108 that can store records of the type shown in Fig. 4 on a long term basis, and a program memory 107 that can store program instructions that control the operation of microprocessor 106, thereby enabling the various components of terrninal 101 to perform the process described below in connectionwith Fig. 2. If desired, terminal 101 may include a display 1 15, such as an LCDdisplay, which can present alphanumeric inforrnation to a user.
It is to be noted here that the components illustrated in Fig. I are functional in nature, and that persons skilled in the art will recognize that the same functions can be pelrol."ed by various kinds of hardware. Some comment~ will illustrate this point. First, it will be recognized that the functions p~.roll~led in program memory 107 and number translation memory 108 can be combined, and that this memory can be a RAM chip, any other type of semiconductor memory, or any other memory 5 means that is capable of storing information and being queried to permit retrieval of such information. Second, it will be recognized that the intelligent terminal can be implemented in a personal computer equipped with an appropriate telephone interface board. In such an implernent~tion, the telephone interface board provides the functions of telephone line circuit 105, dial pad 104 and its associated touch tone genc.~tor, microphone 102 and speaker 103, and the conventional colllpon~ of the computer itself provide the functions of microprocessor 106, display 1 15, feature control buttons 109, number translation memory 108 and program memory 107.
Fig. 2 illustrates the process, initi~ted in step 200 by the dialing of an outgoing telephone call, that is p~.Ç~lnled using the program instructions stored in program memory 107 in the intelligent terminal 101 of Fig. 1. In step 201, as each digit of the dialed number entered on key pad 104, it is e~Amin~d in order to determine, in step 202, if the number (i.e., the sequence of digits) dialed thus far can possibly match one of the numbers stored in memory 108. (The reasons for pc.rolllling this process on a digit by digit basis are set forth below.) If the result of step 202 is negative, it is concluded that the call cannot be processed with information stored in te~ ninAI 101. In this event, proces~ing proceeds with step 205, wherein the already dialed digits as well as any subsequently dialed digits are llAn~n~ ed to the ori~in~ting switch 111-1. In addition to transmitting the dialed number, station 101 is arranged, in accordance with the invention, to request from switch I I I - I, in step 207, the down loading of a destinAtion number. This request may be made for all calls or, preferably, may be made only selectively. In the latter case, the request for down loading may be made by station 101 only if the dialednumber is recognized as the type of number (e.g., the NPA of the dialed number indicates the call is a "500", "700", "800" or "900" call) that may have an associated '~, destin~tion number of a type that can be down loaded. Down loading may also be m~n~ ly requested by the operation of one of the feature control buttons 109 if the caller suspects the network is using a ~l~t~h~ce to route the call.
Depending upon the particular arrangement of the elements in network 110, S switch 111 - 1 may, responsive to receipt of a dialed number recognized as a number requiring "intelligent call processing", launch a query, via the signAIin~ network, to cl~t~b~ce 112, or query its own local cache memory 114-1, in order to retrieve a~estinAtion number that is associated with the dialed number. After the query isl~llnch~ ~I the destin~tion number CO~ onding to the dialed number may be 10 ascertained and returned to switch 111 - 1, if there was an app~oll-iate entry in d~t~bA~e 112 or the cache memory ~c~oc;~ted with switch 111-1. This destination number is then used to route the call through the other elements in network 110 to the app~.,iate destinAtion, such as station 120. At the same time, the ~t~hA~e or cache memory indicates that the rellicvcd destinAtion number is or is not "down 15 loadable". (This is described in more detail in connection with step 303 in Fig. 3.) In either event, after a request to down load a destinAtion number is made in step 207, a deterrnin~tion is made in step 208 as to whether a ~lestin~tion number was in fact returned to the station. If so, that number is stored in memory 108 of station 101 in step 209, and the process of Fig. 2 is te. . . lil .A~ecl in step 206. If the result of step 208 is negative, the process of Fig. 2 is also te.. inAleci in step 206.
If the result of step 202 is positive, indicating that the dialed number may possibly match a stored number in memory 108, memory 108 is queried and a ~l~tf ..n;l~Al;on is next made in step 203 as to whether memory 108, in fact, contains an entry for the dialed number and the col.c~nding d~l;r.~;on or routing number 25 associated with that dialed number. If a negative result is obtained in step 203, the process of digit by digit chPr~ing p~,.rollllcd in steps 201 and 202 is continued. As soon as it is determined that no match is possible (eventually, it may be determined that the entire dialed number is not stored in memory 108), the process beginning with step 205, already described~ will occur.
On the other hand, if the determination made in step 203 is positive, indicating that the dialed number and its associated clestin~tion number are already stored in memory 108, then the associated ~iestin~tion number is sent to switch 111-I in place of the dialed nurnber, in step 204, and this nurnber, rather than the dialed S number, is used by that switch to complete the call. Note that since the destination number is now a "conventional" number rather than an intelligent network number,the call will be routed without the need for switch I 11 - I to access its cache memory 114-1 or ~l~t~b~ee 112 via the SS7 eign~ling network. If desired, the destin~tion number can be displayed on display 115, to indicate to the caller that the call placed 10 to the dialed nurnber is actually being placed to a number di~.~.lt from the number dialed. If the caller wishes, he or she may hang up at this time and thereafter disable the present invention by activation of one of the feature control buttons 109. If this ls done, the test in step 202 is forced to a negative result, whereby the dialed digits are used to complete the call.
As indicated above, the process of Fig. 2, in steps 201 and 202, performs a digit by digit check of memory 108 to ~et~ ....;n~ if the dialed number is, in fact, a number for which a memory match is NOT possible. This arrangement is preferred over an imple-..Pnl~lion that collects and ~.,hles the entire dialed telephone number, because an earlier decision can be made in step 202, particularly if use of the present invention is limited to dialed numbers that begin with a preselectedgroup of NPA's, such as toll &ee or "800" numbers and other special service numbers that have NPA's of 900, 700 or 500. After eY~min~tion of only a few, i.e., three or four, digits, such as the " I " indicating a long ~iet~nce call plus the three digits of the NPA, a ~lete~rnin~tion can already be made that it is not n~ceee~ry to further query memory 108 in step 203.
The process illustrated in Fig. 2 may be modified, if desired, to remove information &om number translation memory 107 on a periodic or timed basis, so that there can be some reasonable assurance that the ~lestin~tion number associated with a particular dialed number is the "current" ~estin~tion number. This aspect of the invention may be accomplished by associating a time stamp with each -destination number stored in memory 107, indicating the date and/or time at which the information was stored. Then, in step 202 of Fig. 2, the time stamp can be checked to make sure that the difference between the current time and the time indicated by the time stamp is not too great. If a desired time is exceeded, the stored 5 information is removed and/or ignored. As an alternative, the contents of memory 107 can be checked on a regular basis to remove "stale" information.
Fig. 3 illustrates the process performed in the origin~ting switch, such as switch 111 - I in the intelligent network 110 of Fig. 1, in accordance with the present invention. As stated previously, depending upon the particular arrangement of the elements in network 110, switch 111 - I may be arranged to recognize a dialed number as a nurnber requiring "intelligent call l,.ocessin~". In this type of imple~ nl~ion, calls that do not require "intelligent call processing" are treated conventionally, me~ning that it is not necessa"~ to launch a query to network ~i~t~b~e 112 or to query the local cache or other memory 114-1 associated with 15 origin~ting switch 111-1. In this category are calls that would otherwise require "intelligent call processing", but for which clestin~tion or routing numbers have already been stored in termin~l 101. For these calls, as stated previously, the information found in memory 108, re~,.ese~..ling the ~stin~tion number that is associated with the dialed telephone number, is sent to the origin~ting switch in step 204 of Fig. 2, so that processing, from the point of view of switch 111-1, is nodifferent from the ~.oces~in~ that occurs when an ol.lin~y call to that number is m~n..~lly dialed by a caller.
The process of Fig. 3 is initiated in step 300, when a dialed number is received from a terminal such as intelligent termin~l 101. In step 301, a 25 determination is made as to whether the dialed number is a nurnber that requires intelligent call processing~ and whether the call is accompanied by a request for down loading, such as the request generated in step 207 of Fig. 2. If the result of the test pe.fo...led in step 301 is negative, then the call is processed conventionally in step 302, using the dialed nurnber information received from station 101. Note here 30 that there will be no request for down loading (and the result of the test performed in - ' 2150063 '~, ' 10 step 301 will therefore be negative) when the destin~tion number associated with the dialed number was already stored in memory 108, so that, in the process of Fig. 2, step 203 produced a positive result and the stored information was transmitted in place of the dialed digits in step 204. There will also be no request for down loading 5 on intelligent network calls dialed from "dumb" telephones, i.e., ordinary telephones that do not have the processing capability or otherwise cannot or do not implement the intelligence of the present invention.
If the result of the test performed in step 301 is positive, then a determination is made in step 303 as to whether switch 111-1 has a destin~tion number that can be 10 down loaded. This decision can depend upon a number of factors that were alluded to above, in connection with the description of step 208 in Fig. 2. Several examples will illustrate: First, even though the dialed number may be a number that normally co.l~onds to a number involving an intelligent network telephone call, there may not be a co~ ,ponding destin~tion number available in ~t~b~e 112 or in the cache 15 memory 114 associated with the origin~ting switch, or the dçstin~tion number may be corrupted, obsolete or otherwise unavailable. Second, there may not be a single d~stin~tion or routing number associated with a particular dialed number, but, rather, several destin~tion numbers that are selected based upon some predetermined logical analysis. (In the latter event, an alternative implem~nt~tion of the present 20 invention may be used, as described more fully below.) Third, the subscriber associated with certain intelligent network (e.g. 800 number) telephone calls may not wish to divulge the destin~tion number associated with the dialed number.
If the result of the determination made in step 303 is negative, then down loading does not occur. Rather, the process continues with step 302, in which the 25 call is completed in the conventional manner. On the other hand, if the result of the deterrnination made in step 303 is positive, then the destin~tion number associated with the dialed number is sent from switch 111-1 to termin~l 101 in step 305, and stored in memory 108. The call is also, in this i~ e, then completed in the conventional manner, in step 302.
21~0063 Figs. 4 and 5 illustrate, respectively, the formats of records contained in memory 108 within terminal 101 of Fig. I and of records contained in database 112 in network 110, or in cache memory 114 in switches 111. In Fig. 4, field 401 contains various dialed numbers, and the rem~indçr of each line contains 5 information associated with the particular dialed number indicated in field 401. For each dialed number in field 401, field 402 contains an associated dçstin~tion number that was provided by switch 111 - I in step 305 of Fig. 3 and stored in memory 108 in step 209 of Fig. 2. It will be seen from Fig. 5 that the records stored in 11~t~b~e 112 may have a similar format, in that field 501 contains dialed telephone numbers and 10 field 502 contains associated destin~tion numbers. Certain dialed nurnbers are associated with multiple c~çstin~tion numbers, depending upon the time of day value entered in field 503. Thus, the entry corresponding to the dialed number 1-800-123-4567 contains a first destination number that applies to calls ori~in~t~d from 12:00 midnight until 7:00 A.M., a second destin~tion number that applies to calls madefrom 7:00 A.M. to 6:00 P.M., and a third dçstin~tion number that applies to calls made at other times. ~n the situation where one dialed number is associated withmultiple dçstin~tion numbers, the destin~tion numbers may be considered to be "non-downloadable", and for this purpose, field 504 would contain a "NO" indicator ~eples~ ng that fact that particular dçstin~tion number entries in .l~t~ e 112 cannot be down loaded. As an alternative, however, the present invention may be modified so that all of the dçstin~tion numbers, as well as the logical rule (based upon criteria obtained from field 503) for choosing among those numbers, is downloaded to tçrmin~l 101 in res~onse to the initial initiation of a telephone call to the dialed nurnber associated with those destin~tion numbers. In this event, terminal 101 must be arranged, in step 204, to both execute the logical rule and then to select the appropriate stored number, deperltling upon the outcome when the logical rule is applied at the time that the call is made. Otherwise, the down load will not be done.
From the foregoing description, it will be recognized that if the present invention is implem~nted in the context of toll-free (i.e., 800 number) calls, then calls made using destin~tion numbers or other information in the intelligent terminals will no longer enjoy toll free status, since these calls will not be recognized by network elements as being directed to a toll free number. This, however, may be advantageous in several situations. First, the ~lestin~tion telephone number stored in the intelligent terminal may turn out to be a number that is within the local calling area of the origination station, so that there will be no additional charge imposed for such calls over the flat rate billing already imposed. Second, the present invention will allow more rapid redial of 800 (or any other intelligent telephone) numbers, which would be very illlpOl l~.t in the context, for example, of a radio or television contest.
Third, by down loading the de~ t;on nurnber and then having the intelligent terrninal in effect dial that number, the call can then be placed over the network using the Preselected Interexchange Carrier (PIC) of the calling party. This will be illu~l~ated by an exarnple: If the number 800-123-4567 is a number normally carried by MCI, and if the ~l~pstin~tion number is actually 212-987-6543, then, by dialing 1212-987-6543, the call will be directed to the same destin~tion, but over the facilities of the p.~re.-~d carrier and not nPcee~rily MCI. This allows a caller to obtain and take advantage of the unique capabilities that one carrier may have over the other, such as the True Voice (TM) capability available only from AT&T.
Fourth, by down loading the destin~tion nurnber to the intelligent terminal, the calling party has the opportunity to know the location of the person or service that they are calling. This capability is normally not available to the caller when conventional 800 call processing occurs in the network, since a person dialing aservice center thought to be on the East Coast could easily turn out to be on the West Coast.
Referring now to Fig. 6, there is shown a block diagram illustrating the overall arrangement of another embodiment of the present invention, in which network intelligence in the form of routing information can be downloaded to a multiple mode intelligent terrninal 601 so that subsequent calls origin~ted from that terrninal may be optimally routed over diverse types of networks. As shown in Fig.
6, intelligent te~nin~l 601 is connected to several networks of diverse types, including a first wireline connection to a Local Exchange Carrier (LEC) network 605 and to an interconnected Interexchange Carrier (IXC) network 610, a second wireless connection to a cellular telephone network 615, and a third coaxial or fiber 5 cable connection to a cable television (CATV) network 625. These multiple modeterminals replesent an extension of dual mode tennin~lc such as the Motorola MicroTAC (described in an article by Randy Oster and Gary Brush entitled "PCS:
Hands-on Communications for All", Telephony February 28, 1994, pages 31 -42) that can originate and receive calls over LEC and cellular networks, and can be 10 achieved simply by combining in one termin~l the functionalities now available in several different t~rrnin~l types. It is A~ ..ed that intelligent te rnin~l 601 includes the co""~one.,~ shown in Fig. 1, including a program memory that controls the operation of the terminal and a number translation memory that contains records associating a dialed number with routing instructions. Base~d upon instructions contained in the program memory, intelligent termin~l 601 op~,.dtes in a manner similar to that of terminal 101 of Fig. I, as illustrated in Fig. 2; deviations from the process shown in that figure are e~Jlailled below. Records contained in the number translation memory in tennin~l 601 are of the type illustrated in Fig. 7, discussed below.
When an intelligent network call is first origin~t~d from intelligent terminal 601, it may be ~ ..rd that there is no information in the number translation memory ~esoci~tin~ the dialed number to any stored routing information, and thatthe call is acco~ gly routed in accor~ce with default routing. For the purposes of description, default routing will be ~sl~med to be from terminal 601 through LEC
network 605 to switch 611-1 in IXC network 610. Because the call is recognized as an intelligent network call, a query is l~lmr~ ed to a ~i~t~b~ce 612, which returns routing information to switch 611 - I indicating how the call should be routed. In the embodiment of Fig. 6, the call can be routed, for example, to (a) LEC network 605 and then to a telephone 606, via a wireline connection, or (b) cellular network 615 and then to a wireless terminal 616 via a wireless connection, or (c) to CATV
- 215~063 network 625 and then to a set top box 626 and its ~CSoci~tç~l telephone 627 via a cable (coaxial or fiber or both) connection. The routing information retrieved from (l;~t~b~ce 612 can also indicate a sequence in which calls are applied to each of the diverse networks shown in Fig. 6.
In accordance with the present invention, the routing information obtained from ~t~b~ce 612 is transmitted to and stored in the number translation memory within intelligent termin~l 601, in association with the dialed number. As a, consequence, when the same dialed number is subsequently called, the number translation memory is consulted, and the routing info~ ation is retrieved. At this point, the call may be routed directly from terminal 601 to (a) LEC network 605 and/or IXC network 610, as a wireline call, (b) cellular network 615, as a wireless call, or (c) CATV network 625, as a CATV call. In addition, a sequence in which such networks are chosen in order to attempt call completion, may be specified.
By virtue of the arrangement just described, it will be seen that significant efficiencies are achieved. For example, a call from telTnin~l 601 to wireless terminal 616 is made as a wireless only call, using only cellular network 615, without the need to use other networks. Similarly, a call from tçnnin~l 601 to telephone 627 is made as a CATV call, using only CATV network 625.
Referring now to Fig. 7, there is shown one illustrative format for the records contained in ~l~t~b~ce 612 of Fig. 6, as well as within the number translation memory within intelligent terminal 601 of Fig. 6, once that memory has been populated with information downloaded from ~l~t~b~ce 612. Each line contains information ~csoci~tç~ with a particular dialed number indicated in field 701. Field 702, 703 and 704 l~ esent the priority ranking for each type of network to which a call to the number in field 701 can be routed, the n~ t~olks being LEC network 605, cellular network 615, and CATV network 625, re~ ively. Thus, for example, calls to (908) 949-7503 are routed as a first choice via CATV network 625, as a second choice via LEC network 605 and as a third choice via cellular network 615.
The sequence used for routing of calls placed to a different number is different.
Note here that other information, such as the clestin~tion numbers associated with a ~,150063 particular dialed number, as applicable to routing via a particular network, will also be included in the record, as shown in Figs. 4 and 5, unless there is a uniform dialing plan by which calls placed to a particular dialed number can be routed via diverse networks using the same number.
Persons skilled in the art will appreciate that various modification and adaptations may be made of the present invention. For example, although Fig. I
depicts implementation of the present invention in the context of a local exchange carrier (LEC) network, the invention can also be hllplc...l .lt d in an interexchange carrier (IXC) network. Also, although the invention has largely been described in the context of "500", "700", "800" or "900" number calls, it is to be understood that it may be practiced in connection with other "special" calls, such as those made to information service (e.g., 411), repair service (e.g. 61 l), and emelgellcy service (e.g. 9l l) . There are also network el~ ..c~ , commonly known as "adjuncts", which pclrol,.l both a ~l~t~b~ce and a switching function. Calls via these adjuncts 15 are handled with ~l~t~b~ce look ups, like an intelligent network call, but are not always accessed by easily identified codes such as "800" or "900" numbers. The techniques described in this application can also be used on calls placed via these adjuncts, and these calls are also thus to be considered a "intelligent network calls", even though they do not involve a dialed number with a "special service" type of20 NPA. Accordingly, the invention should be limited only by the appended claims.
Claims (21)
1. A method for completing an intelligent network telephone call placed by dialing a dialed number from a terminal including a memory, comprising the steps of (a) determining if said memory in said terminal contains routing information corresponding to said dialed number, (b) (i) if so, providing said routing information to elements in the telephone network in order to complete said call, and (ii) if not, a. providing said dialed number to said elements in the telephone network in order to obtain routing information with which to complete said call, and b. storing said routing information in said memory in said terminal for use in completing subsequent calls to said dialed number.
2. The invention defined in claim 1 wherein said routing information is a destination number.
3. The invention defined in claim 1 wherein said routing information identifies a network to which said call should be routed.
4. The invention defined in claim 3 wherein said network is a wireline network, a cellular network or a CATV network.
5. The invention defined in claim 1 wherein the routing information stored in said memory includes a time stamp indicative of the date and/or time at which said information was stored, and said method further includes the step of removing information from said memory when said time stamp indicates that said routing information is older than a predetermined age.
6. A method of call completion for intelligent network telephone calls, comprising the steps of determining when a call requiring intelligent network treatment is first made from an intelligent terminal, if the terminal has the requisite routing information to complete the call;
if the terminal does not have the requisite information needed to complete the call, querying network elements to determine routing information associated with the dialed number, and storing said routing information in said intelligent terminal;
if the terminal does have the requisite routing information needed to complete the call, providing said routing information to said network elements.
if the terminal does not have the requisite information needed to complete the call, querying network elements to determine routing information associated with the dialed number, and storing said routing information in said intelligent terminal;
if the terminal does have the requisite routing information needed to complete the call, providing said routing information to said network elements.
7. The method defined in claim 6 wherein, prior to said storing step, a determination is made if (a) the calling party requested a down load, and (b) a database record associated with the dialed number indicates that routing information stored in the database is marked for down loading.
8. The method of claim 6 wherein said network elements include the originating switch handling said intelligent network telephone calls.
9. The method of claim 6 wherein said network elements include a network database.
10. An intelligent network system comprising an intelligent terminal including a memory for storing translations between dialed 800 telephone numbers and routing numbers that correspond to those dialed numbers;
means, responsive to dialing an 800 number, for collecting the digits of the dialed number and comparing said digits to the numbers in the memory;
an originating switch;
means for transmitting the dialed number to the originating switch if no match is found by said collecting and comparing means;
a service control point (SCP);
means for originating and routing a query message to said service control point (SCP);
means in said SCP for translating said 800 number to an appropriate routing number and for returning said routing number to said originating switch; and means in said originating switch for transmitting said routing number to said intelligent terminal for storage in said memory in association with said 800 number.
means, responsive to dialing an 800 number, for collecting the digits of the dialed number and comparing said digits to the numbers in the memory;
an originating switch;
means for transmitting the dialed number to the originating switch if no match is found by said collecting and comparing means;
a service control point (SCP);
means for originating and routing a query message to said service control point (SCP);
means in said SCP for translating said 800 number to an appropriate routing number and for returning said routing number to said originating switch; and means in said originating switch for transmitting said routing number to said intelligent terminal for storage in said memory in association with said 800 number.
11. The system defined in claim 10 further including means for retrieving and transmitting the stored number to the originating switch if a match is found.
12. The system of claim 10 wherein said collecting and comparing means is arranged to compare said digits on a digit by digit basis.
13. Apparatus for completing calls via a communications network, said apparatus comprising a memory containing routing information associated with dialed numbers;
means responsive to a particular dialed number for determining if there is an entry in said memory containing said particular dialed number and its associated particular routing information; and means for (a) outputting to said communications network, said particular routing information stored in said memory, if an entry is present in said memory for said particular dialed number, and (b) (i) generating a query to an element in said communications network, said query including said particular dialed number, and (ii) storing the response to said query received from said element in said communications network, said response including the particular routing information associated with said particular dialed number, in said memory, if an entry is not present in said memory for said particular dialed number.
means responsive to a particular dialed number for determining if there is an entry in said memory containing said particular dialed number and its associated particular routing information; and means for (a) outputting to said communications network, said particular routing information stored in said memory, if an entry is present in said memory for said particular dialed number, and (b) (i) generating a query to an element in said communications network, said query including said particular dialed number, and (ii) storing the response to said query received from said element in said communications network, said response including the particular routing information associated with said particular dialed number, in said memory, if an entry is not present in said memory for said particular dialed number.
14. The invention defined in claim 13 wherein said apparatus further includes means for displaying the destination number associated with a dialed number.
15. The invention defined in claim 13 wherein said routing information is a destination number.
16. The invention defined in claim 13 wherein said routing information identifies a network to which a call should be routed.
17. The invention defined in claim 16 wherein said network is a wireline network, a cellular network or a CATV network.
18. A method for routing telephone calls originated from an intelligent terminalthrough a telephone network, said method comprising the steps of receiving a dialed telephone number as an input to said intelligent terminal;
determining if a destination number associated with said dialed telephone numberis stored in said intelligent terminal;
if a destination number associated with said dialed telephone number is stored in said intelligent terminal, transmitting said destination number in lieu of said dialed telephone number, to elements in said telephone network;
if a destination number associated with said dialed telephone number is not stored in said intelligent terminal, routing a query containing said dialed telephone number to said elements in said telephone network, and, responsive thereto, receiving from said elements in said telephone network, a destination number associated with said dialed telephone number, and storing said destination number in said intelligent terminal.
determining if a destination number associated with said dialed telephone numberis stored in said intelligent terminal;
if a destination number associated with said dialed telephone number is stored in said intelligent terminal, transmitting said destination number in lieu of said dialed telephone number, to elements in said telephone network;
if a destination number associated with said dialed telephone number is not stored in said intelligent terminal, routing a query containing said dialed telephone number to said elements in said telephone network, and, responsive thereto, receiving from said elements in said telephone network, a destination number associated with said dialed telephone number, and storing said destination number in said intelligent terminal.
19. The method of claim 18 wherein said determining step is performed only for selected dialed telephone numbers.
20. The method of claim 19 wherein said selected dialed telephone numbers are selected based upon the numbering plan area (NPA) portion of said numbers.
21. The method of claim 19 wherein said selected dialed telephone numbers are numbers for "800" telephone calls.
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Families Citing this family (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9401834D0 (en) * | 1994-05-27 | 1994-05-27 | Ericsson Telefon Ab L M | Method and arrangement for call set-up |
| FI99187C (en) * | 1994-11-24 | 1997-10-10 | Tecnomen Oy | A method and apparatus for adding intelligent functions to a telecommunications network |
| FI103542B (en) * | 1995-04-04 | 1999-07-15 | Nokia Telecommunications Oy | Personal IN service |
| US6601048B1 (en) * | 1997-09-12 | 2003-07-29 | Mci Communications Corporation | System and method for detecting and managing fraud |
| US5854834A (en) * | 1995-04-21 | 1998-12-29 | Mci Communications Corporation | Network information concentrator |
| CA2174796C (en) * | 1995-06-19 | 2000-04-18 | James Patrick Dunn | Method for automatic maintenance of a local number portability database |
| US6009160A (en) * | 1995-06-30 | 1999-12-28 | Siemens Information And Communication Networks, Inc. | Method for routing a call |
| US5991388A (en) * | 1995-06-30 | 1999-11-23 | Siemens Information And Communication Networks, Inc. | Method and system for routing calls to a party |
| US5887056A (en) * | 1995-06-30 | 1999-03-23 | Siemens Information And Communication Networks | Method for routing telephone calls to subscribers of different service providers within a common numbering plan area |
| US5978464A (en) * | 1995-06-30 | 1999-11-02 | Siemens Information And Communications Networks, Inc. | Method for updating a local switch internal database in system having different service providers within a common numbering plan area |
| US5748724A (en) * | 1995-06-30 | 1998-05-05 | Siemens Stomberg-Carlson | Method for transferring a subscriber to a new local service provider |
| US5970131A (en) * | 1995-06-30 | 1999-10-19 | Siemens Information And Communication Networks, Inc. | Method for providing location/geographic portability in a system having different service providers within a common numbering plan area |
| US5715305A (en) * | 1995-09-21 | 1998-02-03 | At&T Corp. | Apparatus for and method of providing consumers with local access carrier |
| US5793857A (en) * | 1995-09-27 | 1998-08-11 | Northern Telecom Limited | Method of using dynamic database to improve telephone number portability |
| US5966433A (en) * | 1995-11-30 | 1999-10-12 | Nortel Networks Corporation | Method and apparatus for screening calls in telephone networks |
| JP3671488B2 (en) * | 1995-12-18 | 2005-07-13 | ソニー株式会社 | Call system and call method |
| WO1998010599A1 (en) * | 1996-09-04 | 1998-03-12 | Siemens Aktiengesellschaft | Service switching function in an intelligent network |
| US6134316A (en) * | 1996-10-18 | 2000-10-17 | Telefonaktiebolaget Lm Ericsson | Telecommunications network with relocateability of subscriber number |
| US5987111A (en) * | 1996-12-12 | 1999-11-16 | Ameritech Corporation | Method of aggregating a plurality of network traffic |
| US5917899A (en) * | 1996-12-17 | 1999-06-29 | Ameritech Corporation | Method of connecting a plurality of virtual networks |
| US6628774B2 (en) * | 1998-11-20 | 2003-09-30 | Ameritech Corporation | Method of routing interlata network traffic |
| US6400818B1 (en) | 1996-12-12 | 2002-06-04 | Ameritech Corp. | Method of routing interLATA network traffic |
| US5937055A (en) * | 1997-01-28 | 1999-08-10 | Lucent Technologies Inc. | Method and apparatus for routing telephone calls between alternate telephone service providers |
| US6775264B1 (en) | 1997-03-03 | 2004-08-10 | Webley Systems, Inc. | Computer, internet and telecommunications based network |
| US5943411A (en) * | 1997-05-12 | 1999-08-24 | At&T Corp. | Method for routing an NP call |
| US6259783B1 (en) * | 1997-05-22 | 2001-07-10 | At&T Corp. | Method of enhancing call processing in a number portability environment |
| US6130939A (en) * | 1997-08-08 | 2000-10-10 | Telcordia Technologies, Inc. | Apparatus and method for number portability call processing |
| NL1007335C2 (en) * | 1997-10-23 | 1999-04-27 | Koninkl Kpn Nv | Network system. |
| US6741693B1 (en) * | 2000-06-22 | 2004-05-25 | Sbc Properties, L.P. | Method of operating a virtual private network |
| US6141409A (en) * | 1997-11-13 | 2000-10-31 | Ameritech | Method of operating a virtual private network |
| US6208642B1 (en) * | 1997-12-19 | 2001-03-27 | Ericsson Inc | Architecture independent application invocation over a telephony network |
| US6343124B1 (en) | 1998-06-22 | 2002-01-29 | Lucent Technologies Inc. | Telephone networking system |
| CZ298731B6 (en) * | 1998-08-11 | 2008-01-09 | Swisscom Mobile Ag | Method for providing intelligent network support to a mobile subscriber |
| US6526138B1 (en) * | 1998-12-31 | 2003-02-25 | At&T Corp. | System and method for edge switch query using advanced intelligent network protocol |
| US7516190B2 (en) | 2000-02-04 | 2009-04-07 | Parus Holdings, Inc. | Personal voice-based information retrieval system |
| US6721705B2 (en) | 2000-02-04 | 2004-04-13 | Webley Systems, Inc. | Robust voice browser system and voice activated device controller |
| GB0006292D0 (en) * | 2000-03-15 | 2000-05-03 | Pathfinder Tech Resources Ltd | Telephone call dialling |
| US6643364B1 (en) * | 2000-05-17 | 2003-11-04 | Intel Corporation | Providing telephony services |
| US7406165B2 (en) * | 2001-03-05 | 2008-07-29 | Sbc Properties, L.P. | Direct route ISDN primary route interface |
| GB0121824D0 (en) * | 2001-09-10 | 2001-10-31 | Pathfinder Tech Resources Ltd | Telephone call dialling |
| US7672443B2 (en) * | 2004-12-17 | 2010-03-02 | At&T Intellectual Property I, L.P. | Virtual private network dialed number nature of address conversion |
| US20070127661A1 (en) * | 2005-12-06 | 2007-06-07 | Microsoft Corporation | Global directory registering telephony dialing information |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4191860A (en) * | 1978-07-13 | 1980-03-04 | Bell Telephone Laboratories, Incorporated | Data base communication call processing method |
| US4313035A (en) * | 1980-01-18 | 1982-01-26 | Bell Telephone Laboratories, Incorporated | Method of providing person locator service |
| US4800582A (en) * | 1986-08-08 | 1989-01-24 | Dictaphone Corporation | Method and apparatus for creating and storing telephone directory listings |
| JPH01206799A (en) * | 1988-02-15 | 1989-08-18 | Fujitsu Ltd | Routing control system |
| US5271058A (en) * | 1989-11-27 | 1993-12-14 | Unifi Communications Corporation | Switchless automatic call distribution system used with a combination of networks |
| US5095505A (en) * | 1990-02-28 | 1992-03-10 | Mci Communications Corp. | Efficient flexible special service call processing |
| JPH04107029A (en) * | 1990-08-27 | 1992-04-08 | Mitsubishi Electric Corp | System for connection between local area networks |
| US5243645A (en) * | 1990-11-01 | 1993-09-07 | At&T Bell Laboratories | Automatic system for forwarding of calls |
| US5311572A (en) * | 1991-10-03 | 1994-05-10 | At&T Bell Laboratories | Cooperative databases call processing system |
| US5353331A (en) * | 1992-03-05 | 1994-10-04 | Bell Atlantic Network Services, Inc. | Personal communications service using wireline/wireless integration |
| JP3044510B2 (en) * | 1992-08-26 | 2000-05-22 | ワイケイケイ株式会社 | Method of forming space part of slide fastener chain |
| US5331635A (en) * | 1993-02-12 | 1994-07-19 | Fuji Xerox Co., Ltd. | Network system having function of updating routing information |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |