CN100589482C - Method for carrying out signal switching between different standard systems - Google Patents
Method for carrying out signal switching between different standard systems Download PDFInfo
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- CN100589482C CN100589482C CN200510037920A CN200510037920A CN100589482C CN 100589482 C CN100589482 C CN 100589482C CN 200510037920 A CN200510037920 A CN 200510037920A CN 200510037920 A CN200510037920 A CN 200510037920A CN 100589482 C CN100589482 C CN 100589482C
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Abstract
The present invention provides signalling switch over method between different standard systems, to realize communication protocol intercommunication in different standard system of network of communication. It contains use signalling link inserting signalling switch over platform in different protocol standards end office, link pair consisting of data link and submitting signalling switch over platform management, providing signalling connection between end office and signalling switch over platform, signalling switch over platform receiving one side end office sent signalling, through codingdecoding and signalling conversion transmitting message to opposite side end office to complete signalling switch over. The present invention possesses good mobility and versatility and saves telecommunication operating cost.
Description
Technical field
The present invention relates to the signaling system and the switching technology of the communications field, relate in particular to the method that in communication network, realizes communication protocol intercommunication between different standard systems.
Background technology
Signaling network is the important component part of communication network, adopt the No.7 signalling system of common channel signaling, because the mode that adopts communication port to separate with signalling path, have that signaling capacity is big, transfer rate is fast, can transmit the dividing circuit advantages such as the control signal of the miscellaneous service beyond the signaling and data that continue, in communication network, obtained using very widely.
Fig. 1 is the schematic diagram of existing signaling network basic structure, wherein SP (signalling point) and STP (Signalling Transfer Point) being connected by each level of link establishment Signaling System Number 7.
Present widely used Signaling System Number 7 consensus standard is also being deposited different consensus standard types, as ITU (International Telecommunications Union) standard and ANSI (American National Standards Institute) standard etc.Because at present telecommunication market becomes more diversified and internationalizes, it is more and more to follow the situation that the exchange of different protocol standards type uses Signaling System Number 7 to dock.Though these consensus standards all satisfy the requirement of No.7 signalling system, the difference that exists between each consensus standard has brought certain difficulty still for both sides' direct butt joint.
With widely used ISUP (ISUP) agreement is example, when using the butt joint of ISDN User Part interface between the different exchange, can run into following problem:
Problem 1, most of switch all can be supported ISDN User Part on the communication network, but wherein the switch of many models can only be supported in ansi standard or the ITU standard one type, can not support two kinds of types simultaneously;
Problem 2 there are differences between the ISDN User Part of ITU standard and ansi standard, and directly butt joint can bring the mistake in the message identification, even makes and continue and can not finish, normally intercommunication.
At present, for need adopting means such as introducing tandem exchange to connect in the situation of the interexchange that uses various criterion by the Signaling System Number 7 butt joint.This scheme can effectively overcome the above problems, and makes the complicated network structureization, house of correction need cost higher but introduce tandem exchange; The data configuration that needs change end office (EO); It is more to take resource, especially when the end office (EO) of the different agreement classification of required butt joint more for a long time, can raise the cost greatly.In a word, it is lower to need a kind of improvement cost, and the fine scheme that overcomes the above problems of energy is implemented in the signal switching between the different standard systems simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is: under the prerequisite of not changing the end office switch software and hardware, between the end office (EO) of different agreement classification by link to inserting the signal switching platform, functions such as the switching of interoffice signaling and mapping are provided, are implemented in and carry out signal switching between the different standard systems.
Technical solution of the present invention is as follows:
A kind of method of carrying out signal switching between different standard systems may further comprise the steps:
The first step: use signaling link to insert the signal switching platform between the end office (EO) of different protocol standards, link is obeyed the management of signal switching platform to being made up of data link, provides the signaling between end office (EO) and the signal switching platform to connect;
Second step: the signal switching platform is received the signaling that a side office sends, and through encoding and decoding and signaling conversion, with the end office (EO) of forwards to opposite side, finishes signal switching.
Further, inserting the signal switching platform comprises: structure signaling transfer module and link are to administration module, wherein, the structure link comprises structure information receiving and transmitting module and link to maintenance module to administration module, and the structure signaling transfer module comprises structure coding/decoding module and transformation rule module.
Further, insert the signal switching platform and comprise: the Signaling System Number 7 data of configuration signal transfer platform make the exchange of signal switching platform and different standard systems use the Signaling System Number 7 butt joint respectively.
Further, insert the signal switching platform and comprise: configuration link is to data, and to correspond to link one by one right with connecting signaling link between the end office (EO) of different agreement type, to different links to predetermined different signal switching rule.
Further, link comprises maintenance: link is avoided second layer state oscillation to state-maintenance, and link is to activation/deactivation management, and link is to the blocking-up operation.
The signal switching technology that the present invention proposes is under the prerequisite that does not change the configuration of network configuration and exchange data, connect by the signaling between the ISUP entity of introducing the signal switching platform and provide different standard systems (for example ITU, ANSI), make and be free to carry out communication between the different signaling standards, make the ISUP stereognosis that links to each other by the signal switching platform less than the difference of standard each other simultaneously, compared with prior art, have better flexibility and versatility, saved operation cost.
Description of drawings
Fig. 1 is the schematic diagram of existing signaling network basic structure;
Fig. 2 be signal switching platform of the present invention by link to being connected into the schematic diagram of signaling network;
Fig. 3 is signaling link of the present invention and speech channel connection diagram;
Fig. 4 is the schematic diagram of signal switching platform internal structure of the present invention.
Embodiment
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme:
Fig. 2 be signal switching platform of the present invention by link to being connected into the schematic diagram of signaling network.Wherein the signal switching platform is in the exchange B office that uses the ITU standard with use between the exchange A office of ansi standard, with the two respectively by the Signaling System Number 7 link to being connected.Each to the exchange that connects corresponding A NSI standard and ITU standard respectively to the signaling link link that partners right.
Among Fig. 2, Link A1 is a link between A office and the signal switching platform, and Link B1 is a link between B office and the signal switching platform.Link A1 and Link B1 correspondence are formed link to P1.The corresponding composition of Link A2 and Link B2 link is right, and the corresponding composition of Link Ai and Link Bi link is right.Link An and Link Bn correspondence are formed link to Pn.The signaling that the signal switching platform will be received from Link A1 is sent from Link B1 through the conversion back, from the signaling that Link B1 receives, sends from Link A1 through the conversion back.The rest may be inferred.
The benefit of doing like this is, for end office (EO), can " transparent " will form link the right a pair of link of linking the signal switching platform by end office (EO) will be regarded a direct connected link between the end office (EO) as.From the angle of end office (EO), this link and common Signaling System Number 7 link are as broad as long.
Fig. 3 the present invention introduces signaling link and the speech channel connection diagram behind the signal switching platform.As shown in Figure 3, signal switching platform and A office of end office (EO) and B office use link to being connected, do not have the signaling link that directly links to each other between A office of end office (EO) and the B office, and all signaling messages all pass through the signal switching platform and transfer; Speech channel directly links to each other between A office of end office (EO) and B office, and the signal switching platform does not carry out the tandem of speech channel.
Among Fig. 3, the double-head arrow of solid line is represented physically in esse two-way connection, the two-way connection on the double-head arrow presentation logic of dotted line.The A of opposite end office, B are because the transparent translation of signal switching platform just seems between the A of end office (EO), the B as if the direct connection of having set up Signaling System Number 7 in logic.
Because the ISDN User Part of ITU standard and ansi standard only has the difference on the signaling, and aspect the continuing of speech channel, be consistent, so the signal switching platform does not carry out the tandem of speech channel, to save relay resource.
Fig. 4 is the schematic diagram of signal switching platform internal structure of the present invention.As shown in Figure 4, signal switching platform inner function module mainly is divided into signaling transfer module and link to administration module two parts according to the difference of protocol hierarchy.Wherein, link belongs to MTP (Mail Transfer protocol) layer to administration module, comprises that information receiving and transmitting module and link are to maintenance module.Signaling transfer module belongs to the ISUP layer, comprises coding/decoding module and transformation rule module.Link is realized by software-hardware synergism administration module; Signaling transfer module is realized by software.
Be numbered double arrowed line among Fig. 4 and represented the flow direction of message.Be numbered 1. double arrowed line and represented the flow direction of MTP administrative messag, be numbered the flow direction that 2. double arrowed line has been represented isup message.All message all by link to carrying.
In the embodiment of the invention, the method for carrying out signal switching between the different standard systems may further comprise the steps:
Step 1: between the end office (EO) of different agreement type by link to inserting the signal switching platform.The signal switching platform is set up the ISUP signaling with end office (EO) and is connected.A side score of the game to be connected during connection does not use the configuration of opposite side end office (EO) to dock, i.e. the existence of the imperceptible signal switching platform of end office (EO), and the latter is complete " transparent ".The benefit of doing like this is, insert the signal switching platform after, opposite end office does not have specific (special) requirements, the Signaling System Number 7 data of end office (EO) do not need special processing fully.
Step 2: the Signaling System Number 7 data of configuration signal transfer platform make signal switching platform and ITU standard exchange and ansi standard exchange use the Signaling System Number 7 butt joint respectively.
Step 3: configuration link is to data.It is right that signaling link between the end office (EO) of connection different agreement type is corresponded to link one by one, can be to different links to predetermined different signal switching rule.Link to by the signal switching platform one to one two Signaling System Number 7 links formed, two links are connected respectively to the end office (EO) that need carry out signal switching.It is right that signal switching is based on link, and the signal switching platform will be from a signaling that signaling link is received of link centering, carry out the signaling conversion after, send signaling after the conversion from another signaling link of this link centering.In order to guarantee the existence of the imperceptible signal switching platform of end office (EO), use link to being very important, the signal switching platform is safeguarded link to regarding an integral body as, guaranteed the synchronous of end office's Link State.In addition, entrance link to make between end office (EO) message transmitted directly by link to transmitting, need not carry out complicated routing, can simplify processing procedure greatly, improve treatment effeciency.
Step 4: between the end office (EO) of different agreement type, set up No. seven MTP and connect.The MTP data configuration of signal switching platform: on the signal switching platform, being provided with of the office direction of signaling link selection SLC and butt joint is consistent, to reach the effect of " transparent transmission ".Because the signal switching platform self is " transparent ", the signalling point configuration can be arbitrarily, does not also need link is carried out the setting of route data.Article two, it is right that link is formed a link, the exchange that connects ITU standard and ansi standard respectively to, need not carry out complicated routing from the signaling that a link enters, through after the message maps, directly send by another right link of link.
Step 5: carry out the ISUP signal switching between the end office (EO) of different agreement type.Between the end office (EO) of different agreement type, transmit the ISUP signaling, follow predetermined transfer rule, carry out the switching of signaling.Transfer rule has defined the method for signaling conversion, can carry out different customizations according to the difference that butt joint requires, to adapt to different butt joint requirements.
Wherein, in the step 3, link mainly comprises the following aspects to safeguarding:
Link is to the maintenance of state: when a right operating state of receiving that the second layer reports of link, the signaling conversion platform will be checked the 3rd layer state of another link, if non operating state activates this link; Otherwise when a right non operating state of receiving that the second layer reports of link, the signaling conversion platform will be checked the 3rd layer state of another link, if operating state deactivates this link.
Avoid the vibration of second layer state: the time difference (may bring the link second layer in working order and between the non operating state situation of vibration) back and forth that the two ends second layer is entered the INS state for fear of link, need introducing to prevent the measure of vibrating, pass through record mark, the restriction link vibrates thereby avoid producing to the alternately activation/deactivation of two ends to link.
Activation/deactivation management that link is right: on the signal switching platform, a link of active link centering, the opposite end link also can be activated; A link of deactivation link centering, the opposite end link also can be deactivated, to guarantee by the end office (EO) Link State unanimity of link to connecting.
Link is to blocking operation: the signal switching platform is not initiatively initiated the blocking-up operation, and for the blocking message that end office (EO) sends, the signal switching platform directly arrives the opposite end with this message maps, does not do other operations.
In sum, the present invention uses the method for inserting the signal switching platform to realize the butt joint of the exchange of different standard systems protocol class.To use ansi standard and to use the end office (EO) of ITU standard to be example, between end office (EO), insert the signal switching platform, the signal switching platform set up respectively and each end office (EO) between MTP, ISUP connection, and by link to end office's direct correlation is got up.The signal switching platform carries out the transmitting-receiving and the conversion of the right management of link, message, to realize the requirement of the signal switching between the different protocol standards.Compare with the method for inserting tandem exchange, introduce signal switching platform and link, do not need other resources such as speech channel, saved cost greatly only needing the occupied signaling link circuit resource; And for end office (EO), the signal switching platform is complete " transparent ", do not need to change the data configuration of end office (EO), only by the processing on the signal switching platform, just can be implemented in the exchange of using the ITU standard and dock, avoided the further complicated of network configuration to " directly " of No. seven MTP between the exchange of using ansi standard and ISDN User Part.More for a long time, the superiority of this mode is more outstanding, can effectively improve the flexibility of butt joint, reduces cost, and is convenient to unified control and management in the end office (EO) of the different agreement classification of needs butt joints.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (5)
1. method of carrying out signal switching between different standard systems may further comprise the steps:
Step 1: use signaling link between the end office (EO) of different protocol standards, inserting the signal switching platform, link is to being made up of data link, obey the management of signal switching platform, provide the signaling between end office (EO) and the signal switching platform to connect, wherein, described link is to being a pair of signaling link that is connected to the signal switching platform by end office (EO);
Step 2: the signal switching platform is received the signaling that a side office sends, and through encoding and decoding and signaling conversion, with the end office (EO) of forwards to opposite side, finishes signal switching.
2. method according to claim 1, it is characterized in that, described signal switching platform comprises: structure signaling transfer module and link are to administration module, wherein, the structure link comprises structure information receiving and transmitting module and link to maintenance module to administration module, and the structure signaling transfer module comprises structure coding/decoding module and transformation rule module.
3. method according to claim 1 is characterized in that, described method also further comprises: the Signaling System Number 7 data of configuration signal transfer platform make the exchange of signal switching platform and different standard systems use the Signaling System Number 7 butt joint respectively.
4. method according to claim 1, it is characterized in that, described method also further comprises: configuration link is to data, and to correspond to link one by one right with connecting signaling link between the end office (EO) of different agreement type, to different links to predetermined different signal switching rule.
5. method according to claim 2 is characterized in that, described link comprises maintenance: link is avoided second layer state oscillation to state-maintenance, and link is to activation/deactivation management, and link is to the blocking-up operation.
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| CN200510037920A CN100589482C (en) | 2005-03-02 | 2005-03-02 | Method for carrying out signal switching between different standard systems |
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| CN200510037920A CN100589482C (en) | 2005-03-02 | 2005-03-02 | Method for carrying out signal switching between different standard systems |
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| CN1829218A CN1829218A (en) | 2006-09-06 |
| CN100589482C true CN100589482C (en) | 2010-02-10 |
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