CN101166111B - A service protection method for access gateway - Google Patents
A service protection method for access gateway Download PDFInfo
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- CN101166111B CN101166111B CN200610140248A CN200610140248A CN101166111B CN 101166111 B CN101166111 B CN 101166111B CN 200610140248 A CN200610140248 A CN 200610140248A CN 200610140248 A CN200610140248 A CN 200610140248A CN 101166111 B CN101166111 B CN 101166111B
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Abstract
This invention relates to a method for protecting services of access gateway including the following steps: 1, an access gateway provides an up IP interface and cuts it into the IP network and provides an EI interface to other access gateways, 2, the access gateway registers to a soft switch device, 3, when an access gateway tests that the up IP interface is faulty, it transmits a request for service protection to another gateway connected with it through the E1 interface and tells it its own information, and the required access gateway as the proxy registers to the soft switch device that the faulty gateway belongs to as a faulty one and provides necessary resources.
Description
Technical field
The present invention relates to the implementation method of a kind of service protection in the communication field, especially the service protecting method of IAD.
Background technology
The NGN network that with the soft switch is representative is planned as main networking pattern in the communication network construction at home and abroad gradually, be continue the again technological revolution of analogue technique after digital program controlled technological revolution on the speech communication development history, promptly adopt speech communication the mode of packet data package on data network, to transmit, the development of binding data communication has promoted the development of whole communication network.
Access gateway AG is positioned at the flexible exchanging network marginal layer, provides abundant service access means at user side, and network side can be linked into IP network by the IP upper united mouth, under the control of soft switch SS, can provide business such as IP-based voice/modem/fax.
Access gateway AG is normally by traditional Access Network unit AN evolution, all functions that can compatible AN.Traditional Access Network unit AN normally by the E1 first line of a couplet, under the control of local switch LE, provides the business such as voice based on TDM at network side.
And the carrier-class communication apparatus requires equipment to have very high reliability usually, and redundancy is to improve a kind of basic skills of reliability.Thereby break down when the IP upper united mouth of AG and to cause can't be with the SS normal communication time, in order to guarantee that AG user still can normally make a phone call, common implementation is that AG is linked into IP network except the IP upper united mouth is provided, and provides the E1 upper united mouth to insert local switch LE by the V5 agreement simultaneously.The drawback of this implementation is exactly need keep valuable number resource etc. for AG user at local switch; adopt this protected mode unrealistic for the IAD of Large scale construction from now on; and adopt this mode to bring complexity to networking; the user has two numbers; one is the number of NGN network, and one is the number of LE network.This protected mode only has certain meaning in test and demonstration, for the bigger AG of customer volume, this mode is difficult to be applied among the reality.
Summary of the invention
The service protecting method that the purpose of this invention is to provide a kind of simple, practical IAD makes that the user of the gateway of fault still can normally make a phone call when faults such as IP upper united mouth occurring at certain IAD.
Technical scheme of the present invention is as follows:
A kind of service protecting method of IAD is characterized in that, may further comprise the steps:
(1) IAD provides the IP upper united mouth to be linked into IP network, and provides the E1 interface to be connected to other IAD;
(2) IAD is registered to Softswitch;
(3) when a certain IAD detects IP upper united mouth fault; forbid its own IP address earlier; send the request of service protection then to other IAD that links to each other by the E1 interface with it; and inform the identity of oneself and the IP address of affiliated Softswitch; requested IAD is as identity the Softswitch registration to fault gateway under of proxy gateway with the fault gateway; act on behalf of the business of relevant fault gateway, and required resource is provided.
Further, said method also comprises:
(4) when detecting the IP upper united mouth, recovers just often the fault gateway, send the request of business recovery to proxy gateway, proxy gateway discharges the related resource that the fault gateway service takies, and self forbids the IP address of fault gateway, and the fault gateway is initiated registration to Softswitch again then.
In the above-mentioned steps (2), IAD adopts the flow process of standard code to register to Softswitch.
In the above-mentioned steps (3), the idle time slot by the E1 interface between described fault gateway and the proxy gateway carries out communication, and the distributing slot resources on the E1 interface is responsible for distribution by one of them IAD, or is held consultation by two gateways.
In the above-mentioned steps (3), when the fault gateway sent the request of service protection to proxy gateway, the forbidding its own IP address was informed the identity of proxy gateway oneself and the IP address of affiliated Softswitch then earlier.
The present invention acts on behalf of the call business of fault gateway by the IAD of operate as normal, thereby when having guaranteed that IP upper united mouth fault appears in the fault gateway, the user still can normally make a phone call, and implementation method is simple, practical.
Description of drawings
Fig. 1 is the AG register flow path figure of standard code;
Fig. 2 is the networking diagram of AG service protection of the present invention;
Fig. 3 is the flow chart that proxy gateway carries out agency of trademark registration;
Fig. 4 is the flow chart that proxy gateway is acted on behalf of fault gateway calling service;
Fig. 5 is the flow chart that proxy gateway is acted on behalf of fault gateway called service;
The workflow diagram of proxy gateway when Fig. 6 is the request of fault gateway transmission business recovery.
Embodiment
Method of the present invention is when IAD detects IP upper united mouth fault, act on behalf of the call business of fault gateway by the IAD of operate as normal, thereby the user still can normally make a phone call when having guaranteed that IP upper united mouth fault appears in the fault gateway, and the specific implementation process is as follows:
IAD is linked into the IP network except the IP upper united mouth is provided, and also provides the E1 interface to be connected to other IAD;
During the normal electrifying startup of IAD, adopt the flow process of standard code to register to Softswitch;
When IAD detects IP upper united mouth fault; send the request of service protection to the IAD of the operate as normal that is attached thereto; and inform the identity of oneself and the information such as IP address of affiliated Softswitch; the IAD of requested operate as normal is as the proxy gateway of fault gateway then; can register with the Softswitch of identity under the fault gateway of fault gateway; after registration is normal; the call business of relevant fault gateway will be acted on behalf of by the IAD of operate as normal; required VoIP resource is provided by agency's IAD; the distributing slot resources that connects on the E1 between two IADs can be responsible for distribution by one of them IAD, and perhaps two gateways are held consultation.
When detecting the IP upper united mouth, recovers just often the fault gateway, to the agency who is attached thereto the IAD of own call business send the request of business recovery, agency's Service Gateway will discharge the related resource of fault gateway CU, and self forbids the IP address of fault gateway, then, the fault gateway will be initiated registration to Softswitch again, and after succeeding in registration, the fault gateway recovers operate as normal.
The present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the AG register flow path figure of standard code, and each step is described as follows:
101 access gateway AG at first send ServiceChange to soft switch SS and register, and the TerminationId among the ServcieChange is Root.
The Reply message that 102 soft switch SS loopbacks are succeeded in registration;
103 then, and soft switch SS sends the Modify order to access gateway AG, requires AG to detect all users' off-hook (al/of),
104 access gateway AG are replied Reply message.
Fig. 2 is the networking diagram of AG service protection of the present invention.IAD 1 and IAD 2 all are linked into IP network 5 by the IP upper united mouth, thereby can carry out communication with Softswitch 3 and Softswitch 4.Here, we suppose IAD 1 to Softswitch 3 registrations, and IAD 2 is to Softswitch 4 registrations, and the process of registration as shown in Figure 1.In actual applications, Softswitch 3 and Softswitch 4 can be same Softswitch.Connect by E1 between IAD 1 and the IAD 2.The configuration of IP network 5 guarantees that IAD 2 can normally be visited Softswitch 3 with the IP address of IAD 1 when IAD 1 breaks down; Equally, when IAD 2 broke down, IAD 1 can normally be visited Softswitch 4 with the IP address of IAD 2.Communication between IAD 1 and the IAD 2 can be carried out the HDLC communication by certain time slot of E1.
Fig. 3 is that the IAD of operate as normal carries out the flow chart of agency of trademark registration when IAD detects IP upper united mouth fault.When a certain IAD detected IP upper united mouth fault, it can forbid its own IP address, sent the request of service protection then to the IAD of the operate as normal that is attached thereto, and informed identity of oneself and the information such as IP address of affiliated SS.After the IAD execution in step 301 of operate as normal received this service protection request, the identity of meeting execution in step 302 usefulness fault gateways was according to process shown in Figure 1 Softswitch registration under the fault gateway.After succeeding in registration, the IAD execution in step 303 of operate as normal can send replying of service protection request to the fault gateway.Like this, the user's of consequent malfunction gateway call business just can be undertaken by the IAD of operate as normal.
Fig. 4 is the flow chart that agency's IAD is acted on behalf of fault gateway calling service.Fig. 4 has just introduced main flow process roughly, and in fact the reciprocal process between SS and the AG is more more complex than what introduce.When the fault gateway had user's off-hook to need caller to breathe out, the fault gateway can send the message of calling subscriber's off-hook to agency's IAD.After agency's IAD execution in step 401 receives the message of calling subscriber's off-hook that the fault gateway sends, execution in step 402 is distributed the idle time slot on the E1 of two IADs interconnection, and notice fault gateway with the circuit connection at calling subscriber place to the idle time slot of the E1 that is distributed.Need to prove that the distribution of the idle time slot on the E1 of relevant two IADs interconnection can be that in two gateways any one is responsible for distribution, also can be the distribution of holding consultation of two gateways.In the legend here, be to distribute by the IAD of acting on behalf of.Then, the SS report user offhook message of agency's IAD execution in step 403 under the fault gateway.Then, agency's IAD receives the instruction of SS, and execution in step 404 is sent dialing tone to the user; Then, execution in step 405 receives user's dialing, and execution in step 406 is carried out numbers match according to the DigitMap that SS issues.DigitMap dynamically is issued to AG by SS after can being each AG report of user off-hook; Also can be that SS is issued among the AG as overall DigitMap when AG powers on registration.After the execution in step 406, agency's IAD execution in step 407 reports SS under the fault gateway with matching result, subsequently execution in step 408 according to the command assignment media conversion VoIP resource of SS, connect phone or send busy tone etc. to the user.If the numbers match result that AG reports is successfully, SS can allow AG give calling subscriber's allocation medium conversion VoIP resource, increase context operations such as (Context), can carry out with the AG at called place alternately simultaneously, and behind called subscriber's off-hook, thereby called subscriber's Media Stream characteristic is informed that calling subscriber place AG connects speech channel; If the numbers match result that AG reports is for unsuccessful, then SS can allow AG send busy tone to the calling subscriber.
Fig. 5 is the flow chart that agency's of the present invention IAD is acted on behalf of fault gateway called service. Fig. 5 has just introduced main flow process roughly, in fact the reciprocal process between SS and the AG is more more complex than what introduce. when the IAD of operate as normal receive that soft switch SS sends to the message of user's ring the time, its can distinguish the user belong to inside the Pass the Home Network or the user at the fault gateway place of being acted on behalf of according to purpose IP address. when agency's IAD execution in step 501 receives when the user of fault gateway carries out the message of ring, idle time slot on the E1 of two IADs interconnection of its meeting execution in step 502 distribution, and notice fault gateway with the circuit connection at called subscriber place to the idle time slot of the E1 that is distributed. need to prove, the distribution of the idle time slot on the E1 of relevant two IADs interconnection can be that in two gateways any one is responsible for distribution, also can be the distribution of holding consultation of two gateways. in the legend here, be to distribute by the IAD of acting on behalf of. then, agency's IAD can execution in step 503 notify the fault gateways to called subscriber's ring. and follow-up call flows is consistent with the call flow of standard.
Fig. 6 is that the fault IAD of working as of the present invention detects the recovery of IP upper united mouth just often, the workflow diagram of agency's IAD.Recover just often when the fault gateway detects the IP upper united mouth, it can send the request of business recovery to the agency's who is attached thereto IAD.After agency's IAD execution 601 receives the request of this business recovery, can nullify by the Softswitch of execution in step 602 under the fault gateway, then execution in step 603 discharges the resource of all fault gateway CUs, and self forbid the IP address of fault gateway, execution in step 604 is replied to the fault gateway then.After the fault gateway receives replying that agency's IAD sends, discharge the IAD of this gateway user by the agency and carry out the shared resource of call business, enable then own IP address again the soft switch under own register.Like this, after succeeding in registration, the fault gateway will recover operate as normal.
Claims (8)
1. the service protecting method of an IAD is characterized in that, may further comprise the steps:
(1) IAD provides the IP upper united mouth to be linked into IP network, and provides the E1 interface to be connected to other IAD;
(2) IAD is registered to Softswitch;
(3) when a certain IAD detects IP upper united mouth fault; forbid its own IP address earlier; then to the request that sends service protection with it by other IAD of the continuous operate as normal of E1 interface; and inform the identity of oneself and the IP address of affiliated Softswitch; requested IAD is as identity the Softswitch registration to fault gateway under of proxy gateway with the fault gateway; act on behalf of the business of relevant fault gateway, and required resource is provided.
2. method according to claim 1 is characterized in that, described method further comprises:
(4) when detecting the IP upper united mouth, recovers just often the fault gateway, send the request of business recovery to proxy gateway, proxy gateway discharges the related resource of fault gateway CU, and self forbids the IP address of fault gateway, and the fault gateway is initiated registration to Softswitch again then.
3. method according to claim 1 is characterized in that, in the described step (2), IAD adopts the flow process of standard code to register to Softswitch.
4. method according to claim 1 is characterized in that, in the described step (3), the idle time slot by the E1 interface between described fault gateway and the proxy gateway carries out communication.
5. method according to claim 4 is characterized in that, the distributing slot resources on the E1 interface between described connection fault gateway and the proxy gateway is responsible for distribution by one of them IAD.
6. method according to claim 4 is characterized in that, the distributing slot resources on the E1 interface between described connection fault gateway and the proxy gateway is held consultation by two gateways.
7. method according to claim 1; it is characterized in that, in the described step (3), when the fault gateway sends the request of service protection to proxy gateway; the forbidding its own IP address is informed the identity of proxy gateway oneself and the IP address of affiliated Softswitch then earlier.
8. method according to claim 1 is characterized in that, the Softswitch under described fault gateway and the proxy gateway is identical or inequality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200610140248A CN101166111B (en) | 2006-10-20 | 2006-10-20 | A service protection method for access gateway |
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| CN200610140248A CN101166111B (en) | 2006-10-20 | 2006-10-20 | A service protection method for access gateway |
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| CN101166111A CN101166111A (en) | 2008-04-23 |
| CN101166111B true CN101166111B (en) | 2010-05-12 |
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| CN200610140248A Active CN101166111B (en) | 2006-10-20 | 2006-10-20 | A service protection method for access gateway |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916962B (en) * | 2012-10-25 | 2016-09-28 | 华为技术有限公司 | The triggering method of self-exchange, Apparatus and system under a kind of IMS architecture |
| FR3017757A1 (en) * | 2014-02-14 | 2015-08-21 | Orange | REMOTE DIAGNOSTIC ASSISTANCE TECHNIQUE FOR ACCESS GATEWAY |
| CN106161057B (en) * | 2015-04-02 | 2020-03-27 | 中兴通讯股份有限公司 | User side gateway protection method, gateway equipment and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002077311A (en) * | 2000-08-31 | 2002-03-15 | Fujitsu Denso Ltd | Method and apparatus for system change-over based on fault level of duplex apparatus |
| CN1536819A (en) * | 2003-04-11 | 2004-10-13 | 华为技术有限公司 | Method for implementing dual home in next network |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002077311A (en) * | 2000-08-31 | 2002-03-15 | Fujitsu Denso Ltd | Method and apparatus for system change-over based on fault level of duplex apparatus |
| CN1536819A (en) * | 2003-04-11 | 2004-10-13 | 华为技术有限公司 | Method for implementing dual home in next network |
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| CN101166111A (en) | 2008-04-23 |
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