WO1999034578A1 - Telephone callback detector - Google Patents
Telephone callback detector Download PDFInfo
- Publication number
- WO1999034578A1 WO1999034578A1 PCT/US1998/024769 US9824769W WO9934578A1 WO 1999034578 A1 WO1999034578 A1 WO 1999034578A1 US 9824769 W US9824769 W US 9824769W WO 9934578 A1 WO9934578 A1 WO 9934578A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- callback
- detector
- condition
- channel
- incoming
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/46—Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained
Definitions
- a switched telephone system has an international trunk line for carrying voice signals to another country and a signaling channel associated with the trunk line.
- a signaling monitor is connected to the signaling channel for monitoring signals on the channel and detecting signals that are being transmitted from a location at a remote end of the international trunk line. The signaling monitor provides a remote-call indication signal when such a condition is detected.
- a callback detector is operatively connected to the international trunk line. The callback detector is also connected to the signaling monitor for receiving the remote-call indication signal.
- the callback detector When the callback detector receives a remote-call indication signal it begins to monitor a corresponding channel on the trunk line for a signal that is indicative of a call emanating from a callback service. When such a signal is detected, the callback detector either blocks the call or sends a callback indication signal to the central switching system or billing system of the telecommunications company for appropriate action. Such action would include blocking the call or applying an appropriate surcharge to the account of the caller.
- the signaling channel 600 is embodied as a standard or non-standard signaling channel, such as, but not limited to, international signaling system 5, 6, or 7.
- the international trunk lines are connected through a callback detector 300 and the signaling channel 600 is connected through a signaling monitor 500.
- the signaling monitor 500 is preferably incorporated into the switched telephone network 100.
- the signaling monitor 500 is connected to the callback detector 300 and the callback detector 300 is connected to the switching system or billing system 400 of the international long distance carrier in Country A.
- the signaling monitor 500 monitors the signaling channel 600 for an incoming call, that is, a call originating from the remote end of the international trunk lines 200.
- the call could originate from Country B which has a lower international long distance rate for calls into Country A relative to the rate for calls into Country B from Country A.
- the signaling monitor 500 communicates that information to the callback detector 300 and identifies the particular channel that is receiving the incoming call.
- the callback detector then monitors the specified channel for any of the following telltale conditions within a preselected initial period of the call: (1) an incoming dial tone; (2) outgoing dual tone multi-frequency (DTMF) signaling; or (3) an incoming ringing tone.
- An incoming dial tone would not normally be present on an incoming call.
- a callback subscriber often uses DTMF signals to signal his desired call destination to the callback system. While subscribers use DTMF signaling to control voice response systems such as voice mail, such signaling is not normally used during the initial period of an incoming call, defined as a predetermined time interval from the commencement of the call.
- voice response systems such as voice mail
- an incoming ringing tone from the selected destination telephone indicates to the callback subscriber that the callback call is being attempted.
- the call is determined to be a "callback" call.
- the callback detector 300 may force the termination or disruption of the call by any number of methods, such as interrupting the speech path between the switched network 100 and the international trunks 200. Such interruption may include insertion of idle code in both directions in the speech path or the insertion of an "all trunks busy" or other tone in the speech path.
- the presence of a callback call can be communicated by the callback detector 300 to the telephone company's switching or billing system 400 so that the call can be disconnected or blocked, or so that an appropriate surcharge can be applied to the subscriber's telephone billing account.
- Signaling between the callback detector 300, the signaling monitor 500, and the switching or billing system 400 is preferably sent via dedicated connections or within the signaling protocol of the speech channel 200.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002278794A CA2278794A1 (en) | 1997-11-18 | 1998-11-18 | Telephone callback detector |
EP98960308A EP0953249A1 (en) | 1997-11-18 | 1998-11-18 | Telephone callback detector |
MXPA99006871A MXPA99006871A (en) | 1997-11-18 | 1998-11-18 | Telephone callback detector. |
AU15938/99A AU1593899A (en) | 1997-11-18 | 1998-11-18 | Telephone callback detector |
JP53497999A JP2001510005A (en) | 1997-11-18 | 1998-11-18 | Phone callback detector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6567497P | 1997-11-18 | 1997-11-18 | |
US60/065,674 | 1997-11-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999034578A1 true WO1999034578A1 (en) | 1999-07-08 |
Family
ID=22064353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/024769 WO1999034578A1 (en) | 1997-11-18 | 1998-11-18 | Telephone callback detector |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0953249A1 (en) |
JP (1) | JP2001510005A (en) |
AU (1) | AU1593899A (en) |
CA (1) | CA2278794A1 (en) |
MX (1) | MXPA99006871A (en) |
WO (1) | WO1999034578A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5303301A (en) * | 1991-05-22 | 1994-04-12 | Matsushita Electric Industrial Co., Ltd. | Telephone apparatus with call-back indication |
US5533100A (en) * | 1994-07-29 | 1996-07-02 | At&T Corp. | Communications system call complete arrangement |
US5579382A (en) * | 1994-02-28 | 1996-11-26 | Kokusai Denshin Denwa Kabushiki Kaisha | International direct dialing booking system |
US5590183A (en) * | 1994-03-18 | 1996-12-31 | Fujitsu Limited | Keep call back device |
US5661790A (en) * | 1995-11-03 | 1997-08-26 | Ericsson, Inc. | Call back service for a regulatory restrictive area |
-
1998
- 1998-11-18 CA CA002278794A patent/CA2278794A1/en not_active Abandoned
- 1998-11-18 MX MXPA99006871A patent/MXPA99006871A/en unknown
- 1998-11-18 JP JP53497999A patent/JP2001510005A/en active Pending
- 1998-11-18 AU AU15938/99A patent/AU1593899A/en not_active Abandoned
- 1998-11-18 EP EP98960308A patent/EP0953249A1/en not_active Withdrawn
- 1998-11-18 WO PCT/US1998/024769 patent/WO1999034578A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5303301A (en) * | 1991-05-22 | 1994-04-12 | Matsushita Electric Industrial Co., Ltd. | Telephone apparatus with call-back indication |
US5579382A (en) * | 1994-02-28 | 1996-11-26 | Kokusai Denshin Denwa Kabushiki Kaisha | International direct dialing booking system |
US5590183A (en) * | 1994-03-18 | 1996-12-31 | Fujitsu Limited | Keep call back device |
US5533100A (en) * | 1994-07-29 | 1996-07-02 | At&T Corp. | Communications system call complete arrangement |
US5661790A (en) * | 1995-11-03 | 1997-08-26 | Ericsson, Inc. | Call back service for a regulatory restrictive area |
Also Published As
Publication number | Publication date |
---|---|
MXPA99006871A (en) | 2005-04-28 |
EP0953249A1 (en) | 1999-11-03 |
AU1593899A (en) | 1999-07-19 |
JP2001510005A (en) | 2001-07-24 |
CA2278794A1 (en) | 1999-07-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2276803C (en) | Network-based caller speech muting | |
KR100274487B1 (en) | Method and apparatus for monitoring a network for customer signaling during the term of a call | |
US4873719A (en) | Enhanced calling number delivery service system | |
US6014436A (en) | Telecommunications answering feature method and apparatus | |
EP1106010B1 (en) | Charging in a telecommunications system | |
CA2084106C (en) | Remotely initiated telemetry calling system | |
US5710807A (en) | Method for recording non-communication intervals during a communications call | |
US5535264A (en) | Prompt issuing protocol for an intercept voice messaging system | |
CA2016226A1 (en) | Voice messaging method and apparatus for pay phone telephone systems | |
US6009155A (en) | Communication system and its accounting method | |
US5533111A (en) | System for originating and receiving telephone calls over a virtual piped connection, and specialized customer premise equipment for use in the system | |
US5590182A (en) | System for interception and transmission of communication signals on telephone and data lines | |
US5408524A (en) | Answer supervision over pulse code modulated carrier system and method therefore | |
JPH06101766B2 (en) | Call processing method and apparatus, manual service system, telecommunications switching system, and improved system thereof | |
RU2111625C1 (en) | Remote control telemetry call system | |
US4885767A (en) | Blue-box fraud prevention | |
US6415024B1 (en) | System and method for special call detection and billing treatment | |
WO1999034578A1 (en) | Telephone callback detector | |
JPH0795284A (en) | Communications terminal provided with function for detecting and preventing lie branching | |
US5818916A (en) | Method and apparatus for preventing return dial tone fraud in a cellular paystation | |
US20020118810A1 (en) | System and method to effect telephone call barge-in without operator intervention | |
US6493441B1 (en) | Method of controlling telecommunications signalling | |
JPH10155017A (en) | Telephone terminal equipment | |
Pearce | Interfacing | |
EP0853859A1 (en) | Voice band call routing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HR HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
ENP | Entry into the national phase |
Ref document number: 2278794 Country of ref document: CA Ref country code: JP Ref document number: 1999 534979 Kind code of ref document: A Format of ref document f/p: F Ref country code: CA Ref document number: 2278794 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/1999/006871 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1998960308 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1998960308 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1998960308 Country of ref document: EP |