CN101453382B

CN101453382B - Customer surface office direction circuit break detection, resume detection and uploading method, apparatus

Info

Publication number: CN101453382B
Application number: CN200710178582.2A
Authority: CN
Inventors: 喻炜; 张昊
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2007-11-30
Filing date: 2007-11-30
Publication date: 2012-08-29
Anticipated expiration: 2027-11-30
Also published as: CN101453382A; WO2009070958A1

Abstract

The invention discloses a method for detecting an office direction open circuit in a user plane. The method comprises: a local terminal media stream processing module detects office direction from self to an opposite terminal media stream processing module in the same user plane, and judges that the office direction in the user plane is in an open circuit when detecting that the office direction from self to at least one opposite terminal media stream processing module can not be reached. The invention also discloses a method for reporting the office direction open circuit in the user plane, which comprises: detecting whether the office direction in the user plane is in the open circuit; and reporting information of the office direction open circuit to a communication control module when the detection result is that the office direction in the user plane is in the open circuit. Correspondingly, the invention also discloses a method for detecting and reporting office direction recovery of the user plane, a device thereby, and a device for reporting the office direction open circuit in the user plane. By adopting the proposal, the invention can effectively sense the office direction open circuit in the user plane and office direction recovery events, and reports the events to the communication control module in time, so that the communication control module can take effective counter measures for the office direction open circuit in the user plane and the office direction recovery events.

Description

Customer surface office direction circuit break detection, recovery detection and report method, device

Technical field

The present invention relates to communication technical field, relate in particular to a kind of customer surface office direction circuit break detection, recovery detection and report method, device.

Background technology

It is carrying with the packet communication network that next generation network (NGN, Next Generation Network) is one, the network that controlled function is separated with bearing function.In the network based on packet communication shown in Figure 1, comprise the functional module on four logic of class meanings: communication control module, Media Stream processing module, module access device, grouping backbone network module.

The grouping backbone network is meant and can be the packet communication network that each communication control module and the communication each other of Media Stream processing module provide bearer path.The interface that transmits communication control information between Media Stream processing module and the corresponding communication control module is the management control interface.The interface that communication control module transmits communication control information each other is a network control interface.Management control interface and network control interface all belong to control interface, and the control information of control interface transmission is called signaling, and the passage that provides signaling flow to transmit in the grouping backbone network constitutes signaling plane, i.e. signaling plane.Communication medium stream is called office direction from a Media Stream processing module through the correspondence that the grouping backbone network directly is sent to another Media Stream processing module.Here " directly " is meant that two communication medium information flows between the Media Stream processing module are without another Media Stream processing module switching.Communication medium stream refers to media information current and combinations such as audio frequency media information flow, video media information flow, cartoon medium information flow.Provide the passage of media stream delivery to constitute user plane, i.e. user plane in the grouping backbone network.

The module access device refers to the equipment with communication control module and Media Stream processing module access IP backbone; Generally be customer edge (CE, Customer Edge) router or switch, grouping backbone network access device generally is meant the IP backbone network access equipment; Generally be Provider Edge (PE; Provider Edge) router, CE can pass through various communication links, inserts PE like GE, 10GE, 155MPOS, 622MPOS, 2.5GPOS, 10GPOS etc.There is multiple networking scene in actual networking according to the difference of network topology and CE working method, sees that shown in Fig. 2 a to Fig. 2 g, wherein CE can be operated in three layers of routing mode, also can be operated in two layers of exchanged form.

In soft exchanging network, communication control module is also claimed soft switching server corresponding to SoftSwitch, or mobile Switching Service center (MSC Server, Mobile Switching Center server), realizes the calling control in the soft exchanging network; The Media Stream processing module is responsible for the processing and the IWF of communication medium information flow corresponding to WMG (MGW, Media Gateway); The management control interface adopts H.248 agreement corresponding to Mc interface; Network control interface is a Nc interface, adopts calling control (BICC, the Bearer Independent Call Control) agreement with bearer independent.Inner at flexible exchanging network; The user plane path of MGW A to MGW B constitutes an office direction; In addition, adopt ATM or IP insert core net wireless access net controller (3G is RNC when inserting, and 2G is BSC when inserting) but also logical partitioning be communication control module and Media Stream processing module two parts; This moment, the managing control information interface was an internal interface, and MGW A is to office direction of user plane path formation of certain wireless access net controller.IP backbone in the flexible exchanging network be meant can be between each MGW or MGW and wireless access net controller between intercommunication the IP network of carrying is provided.

In the IMS network; Communication control module is corresponding to MGCF (MGCF; MediaGateway Control Function) module or Multimedia resource function controller (MRFC) (MRFC; MultimediaResource Function Controller) or CSCF (CSCF, Call Session ControlFunction) module.The CSCF module comprises Proxy-Call Session Control Function (P-CSCF, Proxy-CSCF) module, inquiry-CSCF (I-CSCF, Interrogating-CSCF) module or strategy decisive function (PDF) module; The Media Stream processing module is corresponding to the WMG among the IMS (IMS-MGW), Multimedia resource function processor (MRFP) (MRFP; Multimedia Resource Function Processor), critical point GPRS Support Node (GGSN, Gateway GPRS Support Node) or Session Border Controller (SBC); The management control interface is corresponding to Mc interface, can adopt H.248, MGCP or MeGaCo agreement.Inner at IMS, Media Stream transmits between the different port of a medium process module, or is sent to another Media Stream processing module from a Media Stream processing module.IP backbone in the IMS network is meant and can be the IP network that the intercommunication between each Media Stream processing module among the IMS provides carrying.

Customer surface office direction circuit break detects and is meant under IP backbone, website access device or the opposite end Media Stream processing module failure condition in certain office direction; This office direction of perception is unreachable effectively for local media stream processing module; And through the management control interface report communication control module, thereby for to take relevant counter-measure that foundation is provided.Customer surface office direction recover to detect and to be meant that the office direction recovery of opening circuit just often; Local media stream processing module this office direction of perception effectively reverts to and can reach; And through the management control interface report communication control module, thereby for to take relevant counter-measure that foundation is provided.

The main thought of customer surface office direction circuit break detection method is user plane to be flowed to carry out congestion detection in the prior art; Each professional communication quality status that flows to of ongoing communication on the perceptible medium gateway; The situation congested at node or the congested possibility of node is bigger then can stop flow direction jam and detect.This scheme need write down all related congestion information from local terminal Media Stream processing module Media Stream processing module flow direction to the opposite end of current ongoing calling on the Media Stream processing module; The Media Stream processing module that call volume is bigger tends to have the speech channel relation with a plurality of other Media Stream processing modules simultaneously; Need the Media Stream processing module to safeguard that bigger flow chart and poll flow chart all reach high congestion grade whether to find all flow directions, have increased the processing expenditure of Media Stream processing module.

When recovering, also there are not effective perception mechanism and counter-measure at present for the customer surface office direction that opens circuit.

Summary of the invention

The present invention provides a kind of customer surface office direction circuit break detection method; So that take the less expense of local media stream processing module; Get final product the information of effective perception customer surface office direction circuit break, comprise step: local terminal Media Stream processing module detects self to the office direction that is in the opposite end Media Stream processing module in the same user plane; When the office direction that detects self at least one Media Stream processing module to the opposite end is unreachable, judge this office direction circuit break in the said user plane.

The present invention provides a kind of customer surface office direction circuit break checkout gear; So that take the less expense of local media stream processing module; Get final product the information of effective perception customer surface office direction circuit break; Comprise: detecting unit is used for detecting said office direction of installing the opposite end Media Stream processing module that is in same user plane; Identifying unit is used for when detection is unreachable to said office direction of installing at least one Media Stream processing module of opposite end, judging this office direction circuit break in the said user plane.

The present invention provides a kind of customer surface office direction circuit break report method; So that when detecting customer surface office direction circuit break; In time report of user face office direction circuit break message is given communication control module; Whether thereby communication control module, comprises step: detecting has customer surface office direction circuit break if being taked effective counter-measure to the customer surface office direction circuit break incident; When customer surface office direction circuit break is arranged, give communication control module in testing result with the information reporting of said customer surface office direction circuit break.

The present invention provides a kind of customer surface office direction circuit break reporting device; So that when detecting customer surface office direction circuit break; In time report of user face office direction circuit break message is given communication control module; Thereby communication control module can be taked effective counter-measure to the customer surface office direction circuit break incident, comprising: detecting unit is used for detecting whether customer surface office direction circuit break is arranged; Report the unit, be used in testing result giving communication control module with the information reporting of said customer surface office direction circuit break when customer surface office direction circuit break is arranged.

The present invention provides a kind of customer surface office direction to recover detection method; So that the effectively recovery of perception customer surface office direction of local media stream processing module comprises step: local terminal Media Stream processing module detects self to the office direction that is in the office direction opposite end Media Stream processing module that opens circuit in the same user plane; When detecting self office direction and can reach, judge that this office direction in the said user plane recovers normal by opening circuit to the office direction opposite end Media Stream processing module that at least one opens circuit.

The present invention provides a kind of customer surface office direction to recover checkout gear; So that the effectively recovery of perception customer surface office direction of local media stream processing module; Comprise: detecting unit is used for detecting the said office direction that is in the office direction opposite end Media Stream processing module that same user plane opens circuit of installing; Identifying unit is used in detection when said office direction of installing at least one office direction opposite end Media Stream processing module that opens circuit can reach, and judges that this office direction recovers normal by opening circuit in the said user plane.

The present invention provides a kind of customer surface office direction to recover report method; So that when detecting the customer surface office direction recovery; In time report of user face office direction is recovered message to communication control module; Whether thereby communication control module, comprises step: detecting has customer surface office direction to recover if being taked effective counter-measure to customer surface office direction recovery incident; When testing result is recovered for customer surface office direction is arranged, give communication control module with the information reporting that said customer surface office direction recovers.

The present invention provides a kind of customer surface office direction to recover reporting device; So that when detecting the customer surface office direction recovery; In time report of user face office direction is recovered message to communication control module; Thereby communication control module can be taked effective counter-measure to customer surface office direction recovery incident, comprising: detecting unit is used for detecting whether the customer surface office direction recovery is arranged; Report the unit, be used for when testing result is recovered for customer surface office direction is arranged, giving communication control module the information reporting that said customer surface office direction recovers.

Customer surface office direction circuit break detection method and device thereof that the embodiment of the invention proposes; Whether can reach through being in the office direction that local media stream processing module in the same user plane detects opposite end Media Stream processing module; When the office direction that detects self at least one Media Stream processing module to the opposite end is unreachable; Judge that the said office direction of user plane opens circuit; So that take the less expense of local media stream processing module, get final product the information of effective perception customer surface office direction circuit break, take effective counter-measure that the basis is provided for follow-up.

Whether the customer surface office direction that the embodiment of the invention proposes recovers detection method and device thereof, can reach through detecting the office direction that opens circuit; For can reach the time, judge that said office direction recovers, in testing result so that the effectively perception customer surface office direction recovery of local media stream processing module.

The customer surface office direction circuit break that the embodiment of the invention proposes, recovery report method and device thereof; When detecting customer surface office direction circuit break, recovery; Give the corresponding communication control module with the information reporting of customer surface office direction circuit break, recovery; So that communication control module can be taked effective counter-measure to customer surface office direction circuit break, recovery incident in time, and then the service quality of assurance communication network.

Description of drawings

Fig. 1 is based on the schematic network structure of packet communication in the prior art;

Fig. 2 a is based on first kind of networking mode of packet communication network in the prior art;

Fig. 2 b is based on second kind of networking mode of packet communication network in the prior art;

Fig. 2 c is based on the third networking mode of packet communication network in the prior art;

Fig. 2 d is based on the 4th kind of networking mode of packet communication network in the prior art;

Fig. 2 e is based on the 5th kind of networking mode of packet communication network in the prior art;

Fig. 2 f is based on the 6th kind of networking mode of packet communication network in the prior art;

Fig. 2 g is based on the 7th kind of networking mode of packet communication network in the prior art;

Fig. 3 a is office direction circuit break, the recovery detection method flow chart that the embodiment of the invention provides;

Fig. 3 b is that CE was two-layer equipment or CE when not existing during the office direction circuit break that provides of the embodiment of the invention detected, the detection method flow chart whether customer surface office direction can reach;

Fig. 3 c is that CE was two-layer equipment or CE when not existing during the office direction that provides of the embodiment of the invention was recovered to detect, the detection method flow chart whether customer surface office direction can reach;

Fig. 3 d is when CE was three-layer equipment during the office direction circuit break that provides of the embodiment of the invention detected, the detection method flow chart whether customer surface office direction can reach;

Fig. 3 e is when CE was three-layer equipment during the office direction that provides of the embodiment of the invention was recovered to detect, the detection method flow chart whether customer surface office direction can reach;

Fig. 4 a is the customer surface office direction circuit break checkout gear structural representation that the embodiment of the invention provides;

Fig. 4 b is the concrete structure sketch map of detecting unit in the customer surface office direction circuit break checkout gear that provides of the embodiment of the invention;

Fig. 4 c is the concrete structure sketch map of identifying unit in the customer surface office direction circuit break checkout gear that provides of the embodiment of the invention;

Fig. 5 a is that the customer surface office direction that the embodiment of the invention provides recovers the checkout gear structural representation;

Fig. 5 b is the concrete structure sketch map that the customer surface office direction that provides of the embodiment of the invention recovers detecting unit in the checkout gear;

Fig. 5 c is the concrete structure sketch map that the customer surface office direction that provides of the embodiment of the invention recovers identifying unit in the checkout gear;

Fig. 6 is a 3G R4 flexible exchanging network structural representation;

The customer surface office direction circuit break based on 3G R4 flexible exchanging network that Fig. 7 provides for the embodiment of the invention, recovery report basic principle schematic;

Fig. 8 is the IMS schematic network structure;

The customer surface office direction circuit break based on the IMS network that Fig. 9 provides for the embodiment of the invention, recovery report basic principle schematic;

The customer surface office direction circuit break that Figure 10 provides for the embodiment of the invention, recovery report method flow chart;

The customer surface office direction circuit break reporting device structured flowchart that Figure 11 provides for the embodiment of the invention;

Figure 12 recovers the reporting device structured flowchart for the customer surface office direction that the embodiment of the invention provides.

Embodiment

The embodiment of the invention provides a kind of customer surface office direction circuit break detection, report method, and whether basic thought is can reach through the office direction that detects local terminal Media Stream processing module Media Stream processing module to the opposite end in the same user plane; When the office direction that detects local terminal Media Stream processing module at least one Media Stream processing module to the opposite end is unreachable, judges that the said office direction of user plane opens circuit, and give the corresponding communication control module the information reporting of customer surface office direction circuit break.

For the office direction circuit break erroneous judgement of effectively avoiding the short-term fluctuation of packet network route to cause; When the office direction that detects local terminal Media Stream processing module at least one Media Stream processing module to the opposite end is unreachable; Detection is in the preset time; Whether said office direction can reach, and in the preset time, detects said office direction when still unreachable, judges that then the said office direction of user plane opens circuit.

The embodiment of the invention provides that a kind of customer surface office direction recovers to detect, report method, and basic thought is through detecting on the office direction that opens circuit, and whether the office direction of local terminal Media Stream processing module at least one Media Stream processing module to the opposite end can reach; , judge that said office direction recovers normal by opening circuit, and give the corresponding communication control module for can reach the time in testing result the information reporting that the said office direction of user plane is recovered.

Equally; For the office direction of effectively avoiding the short-term fluctuation of packet network route to cause is recovered erroneous judgement; When detecting the office direction of local terminal Media Stream processing module and can reach at least one the Media Stream processing module of office direction opposite end that opens circuit, detect in the preset time, whether said office direction still can reach; For still can reach the time, judge that said office direction recovers normal by opening circuit in testing result.

Be that example is explained with the office direction circuit break that can avoid the fluctuation of packet network route short-term to cause, the execution mode that recovers erroneous judgement among the following embodiment.

Below in conjunction with Figure of description embodiment of the present invention is described, network access equipment is that example is explained with PE among the following embodiment, and the module access device is that example is explained with CE.

Shown in Fig. 3 a, be a kind of customer surface office direction circuit break, recovery detection method flow chart that the embodiment of the invention provides, wherein the customer surface office direction circuit break detection method comprises step:

Step 31: be in the office direction that local terminal Media Stream processing module in the same user plane detects opposite end Media Stream processing module and whether can reach;

Step 32: when the office direction that detects local terminal Media Stream processing module at least one Media Stream processing module to the opposite end is unreachable, detect in the preset time, whether said inaccessible office direction can reach;

Step 33: in the preset time, detect said office direction when still unreachable, judge the said office direction circuit break of user plane.

Customer surface office direction circuit break detection method provided by the invention also comprises step:

Step 34: give communication control module with the information reporting of customer surface office direction circuit break.Wherein, the incident of customer surface office direction circuit break reports communication control module through the communication interface between Media Stream processing module and the communication control module.Concrete, the communication interface between Media Stream processing module and the communication control module is passed through the H.248 Notify order of agreement and is given communication control module with the information reporting of customer surface office direction circuit break.

The step that the customer surface office direction that the embodiment of the invention provides recovers detection method is following:

Step 35: detect the said office direction that opens circuit and whether can reach;

Step 36:, detect in the preset time for can reach the time in testing result, whether the said office direction that opens circuit still can reach;

Step 37: for still can reach the time, judge that the said office direction of user plane recovers normal by opening circuit in testing result.

Customer surface office direction provided by the invention recovers detection method, also comprises step:

Step 38: give communication control module with the information reporting that customer surface office direction recovers.Wherein, the incident of customer surface office direction recovery reports communication control module through the communication interface between Media Stream processing module and the communication control module.Concrete, the communication interface between Media Stream processing module and the communication control module is passed through the H.248 Notify order of agreement and is given communication control module with the information reporting that customer surface office direction recovers.

Different according to network's mode; The detailed process of above-mentioned steps 31, step 35 is also different, in adopting any networking mode like Fig. 2 a to Fig. 2 g, but among the figure as if CE equipment is arranged; Its CE equipment work is when two layers of exchanged form, and the detailed process of step 31 is (shown in Fig. 3 b) as follows:

Step B311: each PE is known the network segment address information of the Media Stream processing module corresponding with self in the same user plane;

Step B312: the PE corresponding with local terminal Media Stream processing module collects the network segment address information that said each PE is known, and the network segment address information of said collection is handed down to local terminal Media Stream processing module;

Step B313: local terminal Media Stream processing module with the network segment address information of storing in the said network segment address information that receives and self routing table relatively;

Step B314: in relatively obtaining the network segment address information of said storage, comprise at least one network segment address information; When this network segment address information is not included in the said network segment address information that receives, confirm that local terminal Media Stream processing module is unreachable to the office direction of the corresponding Media Stream processing module of said at least one network segment address information.

Similarly, the detailed process of step 35 (is seen shown in Fig. 3 c) as follows:

Step C351: each PE is known the network segment address information of the Media Stream processing module corresponding with self in the same user plane;

Step C352: the PE corresponding with local terminal Media Stream processing module collects the network segment address information that said each PE is known, and the network segment address information of said collection is handed down to local terminal Media Stream processing module;

Step C353: local terminal Media Stream processing module with the network segment address information of storing in the said network segment address information that receives and self routing table relatively;

Step C354: in relatively obtaining the said network segment address information that receives, comprise at least one network segment address information; When this network segment address information is not included in the network segment address information of said storage, confirm that local terminal Media Stream processing module reverts to by opening circuit and can reach to the office direction of the corresponding Media Stream processing module of said at least one network segment address information.

Also promptly when CE be two-layer switching equipment or CE when not existing, the Media Stream processing module does not re-use default route and points to PE, supports lightweight dynamic routing protocol (being called for short agreement A) and should expand, from the route of PE study to other office direction.After all other each website routes of PE exchange, the route of near other website of the whole network (being the office direction route) is distributed to the Media Stream processing module, thereby the office direction route is introduced in the routing table of Media Stream processing module in PE and the IP backbone.Under the network normal condition, should comprise route in the Media Stream processing module routing table to all other office directions.Judge customer surface office direction circuit break, when recovering, the network segment address information that can receive with local terminal Media Stream processing module is upgraded the network segment address information of storing in the local terminal Media Stream processing module routing table.

When network failure, be divided into following two kinds of situation according to the difference of fault point.

When the link failure that inserts PE causes external owning administration when unreachable; The Media Stream processing module can rely on agreement A and cancel owning administration automatically to route (being the office direction routing iinformation that the Media Stream processing module does not receive the PE transmission of its ownership); The Media Stream processing module perceives after outside route all cancels, and then starts the office direction circuit break testing process.Accordingly, when this link-recovery, the Media Stream processing module can perceive the full recovery of outside office direction route, starts office direction and recovers testing process.

When the IP backbone fault causes the part office direction unreachable; Local PE will cancel this office direction route automatically; And pass to Media Stream processing module (being that PE is distributed to the part office direction route that does not comprise this fault in the office direction route of Media Stream processing module) by agreement A; The Media Stream processing module detects to be cancelled the back to the part office direction (testing process essence is with the route of storing in the route that receives and self routing table comparison, obtains having the part route in self routing table, and this part route is not included in the route that receives; Cancelled thereby detect to the route of this part office direction), start the testing process that opens circuit.Accordingly, when fault recovery, the Media Stream processing module also can perceive part office direction route recovery, starts the testing process that said part office direction is recovered.

Any networking mode in adopting like Fig. 2 a to Fig. 2 d, and wherein the CE equipment work is when three layers of routing mode, and the detailed process of step 31 is (shown in Fig. 3 d) as follows:

Step D311: each CE is known the network segment address information of the Media Stream processing module that is connected with self in the same user plane; And the said network segment address information of knowing sent to the PE that is connected with self;

Step D312: corresponding PE collects the network segment address information that each PE receives in the said user plane with local terminal Media Stream processing module, and the network segment address information of said collection is sent to the CE that is connected with local terminal Media Stream processing module;

Step D313: the CE that is connected with local terminal Media Stream processing module is handed down to local terminal Media Stream processing module with the said network segment address information that receives;

Step D314: local terminal Media Stream processing module with the network segment address information of storing in the said network segment address information that receives and self routing table relatively;

Step D315: in relatively obtaining the network segment address information of said storage, comprise at least one network segment address information; When this network segment address information is not included in the said network segment address information that receives, confirm that local terminal Media Stream processing module is unreachable to the office direction of the corresponding Media Stream processing module of said at least one network segment address information.

Similarly, any networking mode in adopting like Fig. 2 a to Fig. 2 d, and wherein the CE equipment work is when three layers of routing mode, and the detailed process of step 31 is shown in Fig. 3 e, and the idiographic flow explanation is repeated no more with above-mentioned similar here.

Also promptly when CE is three layers of routing device; Move dynamic routing protocol (being called for short agreement A) between CE and the PE; CE does media interface route in this website and is distributed to PE after effectively converging; After all other each website routes of PE exchange, the route of near other website of the whole network (being the office direction route) is distributed to CE in PE and the IP backbone.The Media Stream processing module does not re-use static default route and points to CE, supports lightweight dynamic routing protocol (being called for short agreement B, can be identical with agreement A) and should expand, and learns to other office direction route from CE.CE moves two kinds of Routing Protocols simultaneously; Agreement A and agreement B; And according to pre-configured routing policy selection office direction Routing Protocol A injection agreement B; Thereby the office direction route is introduced in the routing table of Media Stream processing module, under the network normal condition, should be comprised route in the Media Stream processing module routing table to all other office directions.Judge customer surface office direction circuit break, when recovering, the network segment address information that can receive with local terminal Media Stream processing module is upgraded the network segment address information of storing in the local terminal Media Stream processing module routing table.

Link failure between CE and PE causes external owning administration when unreachable, and CE can rely on agreement A and restrain automatically and cancel CE agreement A route (being that CE does not receive the office direction routing iinformation that connected PE sends).Because agreement A route can be injected agreement B, Media Stream processing module (being that the Media Stream processing module does not receive the office direction routing iinformation) is also cancelled and be delivered to agreement B route automatically.After the Media Stream processing module detects outside route revoke all, then start the testing process that opens circuit.Accordingly, when this link-recovery, the Media Stream processing module can perceive the full recovery of office direction route, and starts office direction recovery testing process.

When the IP backbone fault causes the part office direction unreachable; Local PE will cancel this office direction route automatically; And pass to CE by agreement A, and CE passes to the Media Stream processing module by agreement B again, and the Media Stream processing module detects and cancelled the back to the part office direction (is that the Media Stream processing module is with the route comparison of storing in the office direction route that receives and self routing table; Can analyze and obtain the part office direction and cancelled), then start the testing process that opens circuit.Accordingly, when fault recovery, the Media Stream processing module can perceive part office direction route recovery, and starts said part office direction recovery testing process.

Whether start the testing process that opens circuit and promptly start the detection timer that opens circuit, and in the time that this timer is set, detect this office direction route of cancelling and recover, if in the timer scope, this office direction route is not recovered all the time, then the decidable customer surface office direction circuit break.Otherwise if before timer expiry, this office direction route recovery then should stop the timer timing.Start office direction recovery testing process and promptly start recovery detection timer; And in the time that this timer is set, whether the office direction route that detects this recovery still can reach, if in the timer scope; This office direction route still can reach, and then the said office direction of decidable user plane is recovered.Otherwise if before timer expiry, this office direction route becomes unreachable, then should stop the timer timing.

The embodiment of technical scheme according to the present invention; The present invention provides a kind of customer surface office direction circuit break checkout gear of implementing this technical scheme here; Shown in Fig. 4 a; Comprise: whether detecting unit 41 is used for detecting said office direction of installing the opposite end Media Stream processing module that is in same user plane and can reaches; Identifying unit 42 is used for detecting said office direction of installing at least one Media Stream processing module of opposite end when unreachable at detecting unit 41, judges that this unreachable office direction in the said user plane opens circuit.

This customer surface office direction circuit break checkout gear also comprises: updating block 43 is used for when identifying unit 42 judges that office direction opens circuit, based on the network segment address information of said reception, upgrading the network segment address information of said device storage.

This customer surface office direction circuit break checkout gear also comprises: report unit 44, be used to report the information of said customer surface office direction circuit break to give communication control module.

Wherein first detecting unit 41 specifically comprises (shown in Fig. 4 b): receive subelement 411, be used for receiving the network segment address information of said user plane opposite end Media Stream processing module; Comparison subelement 412 is used for the network segment address information comparison with the said user plane opposite end Media Stream processing module of network segment address information that receives subelement 411 said receptions and the storage of said device; Confirm subelement 413; Be used for when the network segment address information that subelement 412 relatively relatively obtains said storage exists at least one network segment address information not to be included in the network segment address information of reception, confirm that said office direction of installing the corresponding opposite end Media Stream processing module of network segment address information in the network segment address information that is not included in reception is unreachable.

Said identifying unit 42 specifically comprises (seeing shown in Fig. 4 c): detection sub-unit 421, be used for detecting in the preset time detecting said office direction of installing at least one Media Stream processing module of opposite end when unreachable, and whether said unreachable office direction can reach; Judge subelement 422, be used for when being unreachable, judging that this unreachable office direction in the said user plane opens circuit in the testing result of detection sub-unit 421.

The embodiment of technical scheme according to the present invention; The present invention provides a kind of customer surface office direction of implementing this technical scheme to recover checkout gear here; Shown in Fig. 5 a; Comprise: whether detecting unit 51 is used for detecting the said office direction that is in the office direction opposite end Media Stream processing module that same user plane opens circuit of installing and can reaches; Identifying unit 52 is used for when detecting unit 51 detects said office direction of installing at least one office direction opposite end Media Stream processing module that opens circuit and can reach, and judges that this office direction recovers normal by opening circuit in the said user plane.

This customer surface office direction recovers checkout gear and also comprises: updating block 53, be used for judging the office direction recovery just often at identifying unit 52, and based on the network segment address information of said reception, upgrade the network segment address information of said device storage.

This customer surface office direction recovers checkout gear and also comprises: report unit 54, the information that is used for the said customer surface office direction recovery of report of user face is given communication control module.

Wherein detecting unit 51 specifically comprises (shown in Fig. 5 b): receive subelement 511, be used for receiving the network segment address information of said user plane opposite end Media Stream processing module; Subelement 512 relatively, the network segment address information that is used for said reception subelement 511 is received and the network segment address information comparison of the said user plane opposite end Media Stream processing module of said device storage; Confirm subelement 513; When being used for network segment address information in relatively subelement 512 more said receptions and existing at least one network segment address information not to be included in the network segment address information of said storage, confirm that said office direction of installing the opposite end Media Stream processing module of the network segment address information correspondence in the network segment address information that is not included in storage can reach.

Said identifying unit 52 specifically comprises (seeing shown in Fig. 5 c): detection sub-unit 521; Be used for when detecting said office direction of installing at least one office direction opposite end Media Stream processing module that opens circuit and to reach; Detection is in the preset time, and whether the said office direction that reaches still can reach; Judge subelement 522, be used in the testing result of detection sub-unit 521 for still can reach the time, judge that this can reach office direction in the said user plane to revert to just need by opening circuit.

Embodiment below in conjunction with concrete is elaborated.

Embodiment one:

Be example with 3G R4 soft exchanging network, as shown in Figure 6, carry out alternately through agreement H.248 between MSCServer that comprises in this 3G R4 soft exchanging network and the media gateway MGW.Below with regard to the media gateway MGW under the MSC Server 1 carry out customer surface office direction circuit break, the method recover to detect handled is elaborated.

MGW1 under the MSC Server uninterruptedly monitors the routing condition of local terminal to other MGW (MGW2) office direction; If a certain moment is found to be cancelled to MGW2 office direction route; Then start broken circuit detecting method, and start the detection timer that opens circuit, if in this timer; This office direction route is not recovered, and then the MGW1 decidable is to the customer surface office direction circuit break of MGW2 office direction; If in this timer, recover again to the office direction route of MGW2, then MGW1 decidable to the customer surface office direction of MGW2 does not open circuit, and stops timer immediately.The erroneous judgement of opening circuit that above-mentioned timing mechanism can effectively avoid the short-term fluctuation of packet network route to cause.

MGW1 knows that the process that whether can reach to the office direction of MGW2 is specially (being operated in two layers of exchanged form with CE is that example is explained):

At first, each PE is known the network segment address information of the Media Stream processing module that belongs to self in the same user plane, and promptly PE3, PE4 are known the network segment address information of MGW1, MGW2.By Fig. 6 can know between PE3 and the CE5, path failure between PE4 and the CE6, cause PE3, PE4 can not know the network segment address information of MGW2.

Then, the PE (PE3, PE4) of MGW1 ownership collects the network segment address information (being the network segment address information of MGW1) that said each PE is known; And

The network segment address information of said collection is handed down to MGW1.

Network under normal circumstances should store the network segment address information of MGW2 in the routing table of MGW1, and the network segment address information of MGW2 does not exist in the network segment address information that MGW1 receives, and this moment, MGW1 can be known to the office direction of MGW2 unreachable.

When MGW1 detects office direction (to the office direction of MGW2) when unreachable, start the testing process that opens circuit, promptly start the detection timer that opens circuit; And in the time that this timer is set; Whether detect this office direction route of cancelling and recover, if in the timer scope, this office direction route is not recovered all the time; Decidable customer surface office direction circuit break then, and with this reporting events MSC Server that opens circuit.

When judging customer surface office direction circuit break, the network segment address information of storing in the routing table with MGW1 with the network segment address information updating that MGW1 receives, does not comprise the network segment address information of MGW2 in the routing table after promptly upgrading.

Whether the office direction (office direction of MGW1 to MGW2) that the MGW1 monitoring is opened circuit can reach; If a certain moment is found to revert to and can reach to the MGW2 office direction; Then start office direction and recover detection method, and start recovery detection timer, if in this timer; This office direction still can reach, and then MGW1 decidable to the customer surface office direction of MGW2 recovers; If in this timer, become unreachablely again to the office direction of MGW2, then MGW1 decidable to the customer surface office direction of MGW2 does not recover, and stops timer immediately.The recovery erroneous judgement that above-mentioned timing mechanism can effectively avoid the short-term fluctuation of packet network route to cause.

MGW1 knows that whether reverting to the process that can reach to the office direction of MGW2 is specially (being operated in three layers of exchanged form with CE is that example is explained):

At first, each CE is known the network segment address information of the Media Stream processing module that is connected with self in the same user plane, and promptly CE3, CE4 are known the network segment address of MGW1, and CE5, CE6 are known the network segment address of MGW2; And

The said network segment address information of knowing is sent to the network access equipment that is connected with self, the MGW1 that is about to know, the network segment address of MGW2 sends to PE3, PE4;

If MGW1 to MGW2 office direction is for reaching at this moment, then PE3, PE4 can receive MGW1, the network segment address information of MGW2.

Then, PE3, PE4 collect the network segment address information (being the network segment address of MGW1, MGW2) that each network access equipment PE receives in the said user plane; And

The network segment address information of said collection is sent to CE3, CE4;

At last, CE3, CE4 are handed down to MGW1 with the network segment address information that receives.

Behind above-mentioned judgement customer surface office direction circuit break; With MGW1 routing table update; The network segment address information that does not comprise MGW2 in the routing table after the renewal, and in the network segment address information that MGW1 receives, have the network segment address information of MGW2, MGW1 can be known to the office direction of MGW2 and reverted to and can reach this moment.

Revert to reach the time when MGW1 detects to the office direction of MGW2, start office direction and recover testing process, promptly start and recover to detect timer; And in the time that this timer is set; It is unreachable whether the office direction that detects this recovery becomes, if in the timer scope, this office direction still can reach; The then recovery of the said office direction of decidable user plane, and with this office direction recovery reporting events MSC Server.

As shown in Figure 7; For the customer surface office direction circuit break based on 3G R4 flexible exchanging network provided by the invention, recovery report basic principle schematic; Its basic thought is that WMG detects customer surface office direction circuit break, when recovering, gives mobile switching centre with the incident Network Segment Status of customer surface office direction circuit break, recovery through the Notify command report in the agreement H.248.Wherein Network Segment Status incident is stipulated in the message bag Network Segment Status Package of agreement redetermination H.248.

The customer surface office direction circuit break based on 3G R4 network that the specific embodiment of the invention provides, recovery report method comprise:

Detect customer surface office direction circuit break at media gateway MGW 1, when recovering, trigger customer surface office direction circuit break, recover Network Segment Status incident; Wherein, Network Segment Status Package has stipulated the Network Segment Status incident of required support on the butt point of MGC and WMG, and the information of customer surface office direction circuit break, recovery is deposited in customer surface office direction circuit break, recovers among the incident bag Network Segment Status Package.

Network Segment Status Package through the order of the Notify in the agreement is H.248 carried gives mobile switching center server MSC Server with the information reporting of customer surface office direction circuit break, recovery.

MSC Server receives the information of learning customer surface office direction circuit break or recovery behind the Network Segment Status Package, can take counter-measures such as route stand-by is switched, fault route reselecting thus.

Embodiment two:

Be example with the IMS network, as shown in Figure 8, carry out alternately through agreement H.248 between MGCF that comprises in this IMS network and the IMS-MGW.Media Stream processing module in the IMS network can be IMS-MGW, GGSN and SBC, below with the WMG IMS-MGW under the MGCF carry out customer surface office direction circuit break, the method recover to detect handled is elaborated.

IMS-MGW under the MGCF uninterruptedly monitors the routing condition of local terminal to opposite end Media Stream processing module (GGSN) office direction; If a certain moment is found to be cancelled to GGSN office direction route; Then start broken circuit detecting method, and start the detection timer that opens circuit, if in this timer; This office direction route is not recovered, and then the IMS-MGW decidable is to the user surface broken circuit of GGSN office direction; If in this timer, recover again to the office direction route of MGW2, then IMS-MGW decidable to the customer surface office direction of GGSN does not have short circuit, and stops timer immediately.The erroneous judgement of opening circuit that above-mentioned timing mechanism can effectively avoid the short-term fluctuation of packet network route to cause.

If when judging customer surface office direction circuit break,,, do not comprise the network segment address information of GGSN in the routing table after promptly upgrading with the network segment address information updating that IMS-MGW receives with the network segment address information of storing in the IMS-MGW routing table.

Whether the office direction (office direction of IMS-MGW to GGSN) that the IMS-MGW monitoring is opened circuit can reach; If a certain moment is found to revert to and can reach to the GGSN office direction; Then start office direction and recover detection method, and start office direction recovery detection timer, if in this timer; This office direction still can reach, and then the customer surface office direction of IMS-MGW decidable to GGSN office direction recovers; If in this timer, become unreachablely again to the office direction of GGSN, then IMS-MGW decidable to the customer surface office direction of GGSN does not recover, and stops timer immediately.The recovery erroneous judgement that above-mentioned timing mechanism can effectively avoid the short-term fluctuation of packet network route to cause.

How to know the process that whether can reach about IMS-MGW, know that with above-mentioned MGW1 the process that whether can reach to the office direction of MGW2 is similar, be not described in detail in this to the office direction of GGSN.

The customer surface office direction circuit break based on the IMS network that the embodiment of the invention provides, recovery report basic principle schematic as shown in Figure 9; Its basic thought be WMG among the IMS (like IMS-MGW or GGSN) detect customer surface office direction circuit break, when recovering, with the incident NetworkSegment Status of customer surface office direction circuit break, recovery through the Notify command report in the agreement H.248 to MGCF module MGCF or Proxy-Call Session Control Function module P-CSCF (can certainly be Multimedia resource function controller (MRFC) MRFC or other call session control function module CSCF or policy functional module PDF).Wherein Network Segment Status incident is stipulated in the message bag NetworkSegment Status Package of agreement redetermination H.248.

The customer surface office direction circuit break based on the IMS network that the specific embodiment of the invention provides, recovery report method comprise:

WMG IMS-MGW in IMS detects customer surface office direction circuit break, when recovering, triggers customer surface office direction circuit break, recovers Network Segment Status incident; Wherein, Network SegmentStatusPackage has stipulated the NetworkSegment Status incident of required support on the butt point of MGC and WMG, and the information of customer surface office direction circuit break, recovery is deposited in customer surface office direction circuit break, recovers among the incident bag Network Segment Status Package.

Network Segment Status Package through the order of the Notify in the agreement is H.248 carried gives MGCF module MGCF with the information reporting of customer surface office direction circuit break, recovery.

MGCF receives the information of learning customer surface office direction circuit break, recovery behind the Network Segment Status Package, can take counter-measures such as route stand-by is switched, fault route reselecting thus.

A kind of customer surface office direction circuit break provided by the invention, recovery report method flow chart are shown in figure 10, comprise step:

Step 101: detect customer surface office direction circuit break in the Media Stream processing module, when recovering, trigger customer surface office direction circuit break, recover Network Segment Status incident; Wherein Network Segment Status incident is stipulated in the message bag Network Segment Status Package of agreement redetermination H.248.

Step 102:, give communication control module with the information reporting of customer surface office direction circuit break, recovery through the Network Segment Status incident that the order of the Notify in the agreement is H.248 carried.

Wherein, the definition of the message bag Network Segment Status Package of redetermination comprises in agreement H.248:

(1) bag ID and version

Bag ID:nsfp (0x00ef)

Version: 1

Expansion: do not have

(2) attribute

Do not have

(3) incident

The network segment incident that opens circuit

Event id: nsf, (0x0001)

The event descriptor parameter:

The network segment

Parameter I D:ip (0x0001)

Type: IP address

The network segment recovery incident that opens circuit

Event id: nsrs, (0x0002)

The event descriptor parameter:

The network segment

Parameter I D:ip (0x0001)

Type: IP address

(4) signal

Do not have

(5) statistics

Do not have

(6) program

Support the Media Gateway Controller (MGC, Media Gateway Controller) of this bag to judge whether WMG supports this bag through audit.The WMG of supporting this bag is when detecting its route that arrives another one or a plurality of network segments blocking-up; Send a Notify message that has detected " network segment open circuit nsf " incident to MGC; In this Notify message; Except having the office direction circuit break incident, also have the corresponding network segment information of one or more Media Stream processing modules that blocking-up office direction opposite end takes place; The WMG of supporting this bag is when detecting its route that arrives another one or a plurality of network segments blocking-up recovery; Send a Notify message that has detected " network segment open circuit recovery " incident to MGC; In this Notify message; Except having the recovery incident that opens circuit, also have the corresponding network segment information of one or more Media Stream processing modules of the office direction opposite end that the recovery of blocking-up back takes place.

The embodiment of technical scheme according to the present invention, the present invention provide a kind of customer surface office direction circuit break reporting device of implementing this technical scheme here, and be shown in figure 11, comprising: detecting unit 111 is used for detecting whether customer surface office direction circuit break is arranged; Report unit 112, be used in detecting unit 111 testing results giving communication control module with the information reporting of said customer surface office direction circuit break when customer surface office direction circuit break is arranged.

The embodiment of technical scheme according to the present invention, the present invention provide a kind of customer surface office direction of implementing this technical scheme to recover reporting device here, and be shown in figure 12, detecting unit 121, and whether be used for detection has customer surface office direction to revert to by opening circuit normally; Report unit 122, be used for reverting to just often by opening circuit for customer surface office direction is arranged, give communication control module the information reporting that said customer surface office direction recovers in detecting unit 121 testing results.

The user plane open circuit detecting and the report method that adopt the embodiment of the invention to propose; Under the situation of IP backbone, MGW website access device fault; Local MGW is the perception user surface broken circuit effectively; And report communication control module, thereby for to take relevant counter-measure that foundation is provided through the managing control information interface.

User plane open circuit detecting and report method that the embodiment of the invention proposes are applicable to R4 flexible exchanging network and IMS network.

In engineering practice; Because bearing bed (transmission, IP) fault, the problem of the serious overload of IP layer possibly cause some speech channel normally to set up; But the situation that can't switch to route stand-by takes place; The present invention can effectively carry out speech channel and switch through user plane open circuit detecting under the situation of user surface broken circuit, avoid network to be absorbed in system-level down state effectively.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. a customer surface office direction circuit break detection method is characterized in that, comprises step:

Local terminal Media Stream processing module receives the network segment address information that is in the opposite end Media Stream processing module in the same user plane;

Local terminal Media Stream processing module with the network segment address information of opposite end Media Stream processing module in the said user plane of the network segment address information of said reception and self storage relatively; And

When in the network segment address information of said storage, existing at least one network segment address information not to be included in the network segment address information of reception, confirm that self is unreachable to the office direction of the corresponding opposite end Media Stream processing module of the network segment address information in the network segment address information that is not included in reception; And

Judge that this office direction in the said user plane opens circuit.

2. the method for claim 1 is characterized in that, also comprises based on the network segment address information of said reception, upgrading the step of the network segment address information of self storing when local terminal Media Stream processing module judgement office direction opens circuit.

3. the method for claim 1 is characterized in that, the network segment address information that said local terminal Media Stream processing module receives is that network access equipment issues, and network access equipment issues the process of network segment address information, specifically comprises:

Each network access equipment in the said user plane is known the network segment address information of the Media Stream processing module that belongs to self respectively;

The network access equipment of local terminal Media Stream processing module ownership is collected the network segment address information that said each network access equipment is known; And

The network segment address information of said collection is handed down to local terminal Media Stream processing module.

4. the method for claim 1 is characterized in that, the network segment address information that said local terminal Media Stream processing module receives is that network access equipment issues, and network access equipment issues the process of network segment address information, specifically comprises:

Each module access device in the said user plane is known the network segment address information of the Media Stream processing module that is connected with self respectively; And

The said network segment address information of knowing is sent to the network access equipment that is connected with self;

The network access equipment of local terminal Media Stream processing module ownership is collected the network segment address information that each network access equipment receives in the said user plane; And

The network segment address information of said collection is handed down to local terminal Media Stream processing module through the module access device that is connected with local terminal Media Stream processing module.

5. the method for claim 1 is characterized in that, comprises that also the information that reports said customer surface office direction circuit break gives the step of communication control module.

6. method as claimed in claim 5 is characterized in that, comprises the identification information that is used for identifying user face office direction circuit break in the information of said customer surface office direction circuit break, and the network segment address information of opposite end Media Stream processing module on this office direction.

7. method as claimed in claim 5 is characterized in that, gives communication control module through the information of the Notify command report customer surface office direction circuit break in the agreement H.248.

8. the method for claim 1 is characterized in that, judges that this unreachable office direction opens circuit specifically to comprise step:

Local terminal Media Stream processing module detected in the preset time, and whether said unreachable office direction can reach; And

When being unreachable, judge that this unreachable office direction in the said user plane opens circuit in testing result.

9. method as claimed in claim 8 is characterized in that, the said preset time be local terminal Media Stream processing module when communication control module is registered, obtain from communication control module.

10. a customer surface office direction circuit break checkout gear is characterized in that, comprising:

Receiving element is used for receiving the network segment address information that is in the opposite end Media Stream processing module of same user plane with said device;

Comparing unit, the network segment address information of the said user plane opposite end Media Stream processing module of network segment address information that is used for said receiving element is received and the storage of said device is relatively;

Confirm the unit; Be used for when the network segment address information of said storage exists at least one network segment address information not to be included in the network segment address information of reception, confirm that said office direction of installing the corresponding opposite end Media Stream processing module of network segment address information in the network segment address information that is not included in reception is unreachable;

Identifying unit is used for determining in said definite unit said office direction of installing at least one Media Stream processing module of opposite end when unreachable, judges that this office direction in the said user plane opens circuit.

11. device as claimed in claim 10 is characterized in that, also comprises updating block, is used for when judging that office direction opens circuit, and based on the network segment address information of said reception, upgrades the network segment address information of said device storage.

12. device as claimed in claim 10 is characterized in that, also comprises reporting the unit, is used to report the information of said customer surface office direction circuit break to give communication control module.

13. device as claimed in claim 10 is characterized in that, said identifying unit specifically comprises:

Detection sub-unit is used for when said office direction of installing at least one Media Stream processing module of opposite end is unreachable, detecting in the preset time, and whether said unreachable office direction can reach;

Judge subelement, be used for when being unreachable, judging that this unreachable office direction in the said user plane opens circuit in the testing result of detection sub-unit.

14. a customer surface office direction recovers detection method, it is characterized in that, comprises step:

Local terminal Media Stream processing module receives the network segment address information that is in the office direction opposite end Media Stream processing module that opens circuit in the same user plane;

When in the network segment address information of said reception, existing at least one network segment address information not to be included in the network segment address information of said storage, confirm that self can reach to the office direction of the corresponding opposite end Media Stream processing module of the network segment address information in the network segment address information that is not included in storage; And

Judge that this office direction in the said user plane reverts to by opening circuit normally.

15. method as claimed in claim 14 is characterized in that, also comprises the recovery of local terminal Media Stream processing module judgement office direction just often, based on the network segment address information of said reception, upgrades the step of the network segment address information of self storing.

16. method as claimed in claim 14 is characterized in that, the network segment address information that said local terminal Media Stream processing module receives is that network access equipment issues, and network access equipment issues the process of network segment address information, specifically comprises:

Each network access equipment is known the network segment address information of the Media Stream processing module that belongs to self respectively in the said user plane;

The network access equipment of local terminal Media Stream processing module ownership is collected the network segment address information that each network access equipment is known in the said user plane; And

17. method as claimed in claim 14 is characterized in that, the network segment address information that said local terminal Media Stream processing module receives is that network access equipment issues, and network access equipment issues the process of network segment address information, specifically comprises:

Each module access device is known the network segment address information of the Media Stream processing module that is connected with self respectively in the said user plane; And

18. method as claimed in claim 14 is characterized in that, also comprises the step that the information that reports the said office direction of said user plane to recover is given communication control module.

19. method as claimed in claim 18 is characterized in that, comprises in the information that said customer surface office direction recovers being used for the identification information that the said office direction of identifying user face is recovered, and the network segment address information of opposite end Media Stream processing module on the said office direction.

20. method as claimed in claim 18 is characterized in that, gives communication control module through the information that the Notify command report customer surface office direction in the agreement H.248 recovers.

21. method as claimed in claim 14 is characterized in that, reached at the office direction in the said judgement user plane reverts to normal process and specifically comprises by opening circuit:

Local media stream processing module detected in the preset time, and whether the said office direction that reaches still can reach; And

For still can reach the time, judge that this reached at the office direction in the said user plane reverts to by opening circuit normally in testing result.

22. method as claimed in claim 21 is characterized in that, the said preset time be local terminal Media Stream processing module when communication control module is registered, obtain from communication control module.

23. a customer surface office direction recovers checkout gear, it is characterized in that, comprising:

Receiving element is used for receiving the network segment address information that is in the office direction opposite end Media Stream processing module that opens circuit of same user plane with said device;

Confirm the unit; Be used for when network segment address information that said receiving element receives exists at least one network segment address information not to be included in the network segment address information of said storage, confirm that said office direction of installing the corresponding opposite end Media Stream processing module of network segment address information in the network segment address information that is not included in storage can reach;

Identifying unit when being used for determining said office direction of installing said at least one office direction opposite end Media Stream processing module that opens circuit in said definite unit and can reaching, judges that this office direction in the said user plane reverts to by opening circuit normally.

24. device as claimed in claim 23 is characterized in that, also comprises updating block, is used for judging the office direction recovery just often, based on the network segment address information of said reception, upgrades the network segment address information of said device storage.

25. device as claimed in claim 23 is characterized in that, also comprises reporting the unit, the information that is used to report said customer surface office direction to recover is given communication control module.

26. device as claimed in claim 23 is characterized in that, said identifying unit specifically comprises:

Detection sub-unit is used for when said office direction of installing at least one office direction opposite end Media Stream processing module that opens circuit can reach, and detects in the preset time, and whether the said office direction that reaches still can reach;

Judge subelement, be used in the testing result of detection sub-unit for still can reach the time, judge that this can reach office direction in the said user plane to revert to by opening circuit normally.