CN100334845C - Method for detecting link failure between media getway and media gatway controller - Google Patents
Method for detecting link failure between media getway and media gatway controller Download PDFInfo
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Abstract
The present invention discloses a method for detesting link failure between a media gateway (MGW) and a media gateway controller (MGC). The method comprises that: the MGC sends a link detecting notification to the MGW and indicates a link event and a link which is used for detecting the link event, and the link event is contained in a link detecting packet which is expanded and defined from an H. 248 protocol; the MGW starts to detect the link event on the link according to the link event and the link which are indicated by the link detecting notification; when the link event is detected by the MGW, the link event is reported and notified to the MGC; the MGW controls the sending of an H. 248 message on the link which occurs the link event currently according to the detected link event; the MGC controls the sending of the H. 248 message on the link according to the link event which is indicated by the link event notification reported by the MGW and the link which occurs the link event. The method of the present invention is adopted to fast detect the link failure between the MGC and the MGW, and the call loss is avoided in the process of breaking of the link.
Description
Technical field
The present invention relates to a kind of method that detects link failure, the method for link failure between particularly a kind of detection media gateway (MGW) and the Media Gateway Controller (MGC).
Background technology
In WCDMA R4 system and NGN system, the switching equipment of core net realizes that carrying separates with controlled function, and promptly original switching equipment is separated into two parts: MGC and MGW.Realize CCF by MGC, and realize carrying control and carrying interactive function by MGW.MGC passes through H.248 agreement control MGW, and the carrying media that MGW supports can be based on asynchronous transfer mode protocol (atm) (ATM) or Internet Protocol (IP), and H.248 agreement can be used IP or ATM carrying.
Wherein, H.248 the function of agreement can be divided into the relevant and irrelevant two parts of calling of calling, and described calling relevant portion comprises: call control procedures such as call setup, deletion; The irrelevant part of described calling comprises: the audit of MGW ability, MGW are to the registration of MGC and the Link State detection between MGW and the MGC etc.
In present H.248 agreement, there are two kinds of mechanism to detect Link State between MGW and the MGC, comprising: the link detecting mechanism of IP and ATM bearing protocol self, the self-defining heartbeat detection mechanism of agreement H.248.
Link detecting mechanism for IP and ATM bearing protocol self, when H.248 agreement is carried on IP-based multimedia SCTP (SCTP)/transmission control protocol (TCP), because, the SCTP/TCP agreement all is connection-oriented, after setting up a SCTP or TCP connection between MGC and the MGW, if link down or can not use the time, self can detect SCTP or Transmission Control Protocol, such as: whether the SCTP/TCP agreement can utilize regular transmission heartbeat detection message to detect link normal.
For the self-defining heartbeat detection mechanism of agreement H.248, H.248 the appendix 14 of agreement has defined a bag, is used on protocol hierarchy H.248, and by send heartbeat detection message between MGW and MGC, whether the link that detects between MGW and the MGC is normal.
Above-mentioned two kinds of testing mechanisms all realize that by sending heartbeat detection message it is basic identical that it detects principle, and concrete testing process is as follows:
A.MGW is after the MGC registration, and MGC issues heartbeat detection message to MGW, requires MGW regularly to report an incident that shows the MGW operate as normal to MGC, and MGC will return a response message to each this type of incident that MGW reports;
If b. in the time threshold that sets in advance, MGW reports the incident that shows its operate as normal to MGC, and then MGC thinks the interruption of getting in touch with MGW; If in the time threshold that sets in advance, a plurality of incidents that MGW reports continuously to MGC, MGC does not return response message, and then MGW thinks the interruption of getting in touch with MGC.
When the link down between MGW and the MGC, MGC and MGW can not send H.248 message on the link that interrupts, otherwise, can cause call loss, i.e. call setup failure.Because, above-mentioned link down detection speed is too slow, generally in level second, that is: MGC just can learn link down and stop at and sends H.248 message on this link after the link down several seconds, and in the link down process in these several seconds, still chain rupture road communication in use of MGC and MGW, therefore, will make the H.248 information drop-out on this link, cause a large amount of call losses at short notice.
Though, also can be set to Millisecond according to the time threshold of agreement regulation heartbeat detection, and not be suitable for the link detecting between MGW and the MGC, industry can so not be provided with usually.This be because, if time threshold is set to Millisecond, need the too frequent transmission heartbeat detection message on link of MGC, the result will cause the message that is used to detect in a large number to disturb normal event handling between MGW and the MGC, took multi-system resource, thereby the system that influences moves normally.
In sum, the link failure detection method between existing MGW and the MGC can not in time detect the link failure between MGC and the MGW, thereby causes a large amount of call losses in the link down process, has influenced quality of service greatly.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method for link failure between a kind of MGW of detection and the MGC, can fast detecting to the link failure between MGC and the MGW, thereby avoided a large amount of call losses in the link down process, guarantee quality of service.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that detects link failure between MGW and the MGC, the method comprising the steps of:
A.MGC sends the link detecting notice to MGW, to MGW indication link event and the link that carries out the link event detection; This link event is defined in the link detecting bag of H.248 protocol extension definition;
B.MGW notifies indicated link event and link according to link detecting, begins to detect the link event on the described link; The reporting links event notice was given MGC when MGW detected link event; MGW according to detected link event on the link of current generation link event H.248 message send and to control; The link event that MGC reports according to MGW is notified indicated link event and the link of link event is taken place, and the H.248 message on the link of described generation link event is sent control.
Among the step a, the link event of described link detecting notice indication is the link failure incident;
Among the step b, MGW continues to detect the link failure incident up to detecting the link failure incident; The link event notice that is reported is the link failure event notice, this linkdown notification indication link failure incident and the link that the link failure incident takes place; Described MGW and MGC send the H.248 message on the link and are controlled to be: stop to send H.248 message.
Among the step a, the indication link event is that the described link detecting notice of link failure incident is indicated the link failure incident by the event description parameter of the self-contained bag sign of link detecting bag, link failure event identifier and link failure incident and carried out the link of link failure event detection;
Among the step b, described link failure event notice is by the self-contained bag sign of link detecting bag, link failure event identifier and the detection reported event parameter indication link failure incident of link failure incident and the link that the link failure incident takes place.
Among the step a, the link event of described link detecting notice indication comprises link failure incident and link-recovery incident, the link that the link of this link detecting notice indication comprises the link that carries out the link failure event detection and carries out the link-recovery event detection;
Among the step b, MGW at first continues to detect the link failure incident of the indicated link that carries out the link failure event detection of step a;
When MGW detects the link failure incident, the link event notice that is reported is the link failure event notice, the link of this link failure event notice indication link failure incident and generation link failure incident, described MGW and MGC send the H.248 message on the link and are controlled to be: stop to send H.248 message, simultaneously, step a is indicated when carrying out the link generation link failure incident of link-recovery event detection, and MGW also continues to detect the link-recovery incident that link failure incident link takes place for this;
When MGW detects the link-recovery incident, the link event notice that is reported is the link-recovery event notice, the link of this link-recovery event notice indication link-recovery incident and generation link-recovery incident, described MGW and MGC send the H.248 message on the link and are controlled to be: begin to send H.248 message, simultaneously, MGW also continues to detect the link failure incident of current generation link-recovery incident link.
Among the step a, the event description parameter of the event description parameter of the described link detecting notice of indication link failure incident and link-recovery incident by the self-contained bag sign of link detecting bag, link failure event identifier, link failure incident, link-recovery event identifier, link-recovery incident indicates link failure incident, link-recovery incident, carry out the link of link failure event detection, carry out the link of link-recovery event detection;
Among the step b, described link failure event notice is by the self-contained bag sign of link detecting bag, link failure event identifier and the detection reported event parameter indication link failure incident of link failure incident and the link that the link failure incident takes place; Described link-recovery event notice is by the self-contained bag sign of link detecting bag, link-recovery event identifier and the detection reported event parameter indication link-recovery incident of link-recovery incident and the link that the link-recovery incident takes place.
Among the step a, described MGW further returns the affirmation response to MGC after receiving the link detecting notice.
Among the step b, described MGC further returns the affirmation response to MGW after receiving the link event notice.
Among the step b, MGW detects the link event of link separately by the link detecting module of each bar link.
By such scheme as can be seen, key of the present invention is: in agreement H.248 expanded definition the link detecting bag, and therein the link failure incident is defined; MGW is after receiving the link detecting notice of MGC, the event description parameter of the self-contained bag sign of the link detecting bag in the identification notice, link failure event identifier and link failure incident, thereby triggering MGW detects the failure condition of link between current MGW and the MGC, and the reporting links event of failure is notified to MGC when detecting the link failure incident, sends H.248 message on the faulty link thereby MGW and MGC are stopped at.
Therefore, a kind of method that detects link failure between MGW and the MGC provided by the present invention, can detect the link failure between MGW and the MGC fast and accurately,, thereby avoid the call loss that causes because of link down substantially so that MGC and MGW in time select other normal link to send H.248 message.
Description of drawings
Fig. 1 is the preferred embodiment handling process schematic diagram of the inventive method.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The inventive method is applied to H.248 agreement, H.248 having defined the link detecting bag in the agreement, has defined the link failure incident in the link detecting bag, thereby protocol function is H.248 expanded; MGC is by sending the link detecting notice to MGW indication link failure incident with carry out the link of link failure event detection, and MGW detects link failure incident on the described link according to the indication of notice again; The reporting links event of failure was notified to MGC when MGW detected the link failure incident, and stopped on the link of current generation link failure incident and send H.248 message; The link failure event notice that MGC then reports according to MGW stops at and sends H.248 message on this link.
H.248 agreement is by the 16th group of proposition of ITU-T, and it has introduced two abstract concepts of destination node (Termination) and related (Context).Wherein, Termination sends and or receives one or more data flow.In a multimedia conferencing, a Termination can support multiple medium, and sends or receive a plurality of Media Streams.In Termination, Media Stream parameter, modulator-demodulator (modem) parameter and bearing capacity parameter have been encapsulated; Context has then shown the annexation between some Termination.H.248 agreement by create (Add), revise (Modify), deletion (Subtract), migration (Move), numerical value audit (Audit Value), ability audit (AuditCapability), notice (Notify) and professional change (Service Change) eight orders are to operating between Termination and the Context, thereby finish call establishment and release.
" bag " is another key concept in the agreement H.248 (Package), can expand protocol function H.248 by defining new " bag ", thereby strengthen the H.248 flexibility of agreement greatly.
The inventive method has defined the link detecting bag that is used to detect link failure between MGW and the MGC when H.248 agreement is expanded.Comprise in the described link detecting bag: package definition and link failure event definition.Wherein, package definition comprises: bag sign, bag explanation etc.; The definition of link failure incident comprises: link failure event identifier, and the event description parameter of link failure incident and detection reported event parameter etc.Like this, MGC can indicate MGW by the event description parameter of described bag sign, link failure event identifier and link failure incident: the link failure incident on the indicated link of event description parameter of lasting detection link failure incident; Link failure can take place by which link of detection reported event parameter indication MGC by the link failure incident in MGW when detecting the link failure incident; Thereby make MGW and MGC detect current link failure situation timely and accurately, realized the H.248 link failure detection function of agreement.
In addition, consider the follow-up possible link-recovery situation of faulty link, the inventive method is also expanded the H.248 link-recovery measuring ability of agreement by the definition that increases the link-recovery incident in above-mentioned link detecting bag.The definition of this link-recovery incident comprises: link-recovery event identifier, and the event description parameter of link-recovery incident and detection reported event parameter etc.Like this, MGC can be by the link detecting bag the event description parameter indication MGW of bag sign, link failure event identifier, link-recovery event identifier and link failure incident and link-recovery incident: when the link failure incident of the indicated link of event description parameter that detects the link-recovery incident, also to continue to detect the link-recovery incident of this generation link failure incident link, and continue detect its link failure incident after the link-recovery incident has taken place detecting this link; MGW can recover by which faulty link of detection reported event parameter indication MGC by the link-recovery incident when detecting the link-recovery incident; Thereby make MGW and MGC detect current link-recovery situation timely and accurately.
Wherein, the event description parameter of link failure incident and link-recovery incident has been indicated the link that carries out link failure incident and link-recovery event detection respectively, described event description parameter can be default value, and then the indicated link of this event description parameter is all links of setting up between current MGW and the MGC; Described event description parameter also can for Linktype and or the chain line, then the indicated link of this event description parameter is a class or a few class link or one or several link.Therefore, MGW can carry out link failure incident or link-recovery event detection to current all links or a class or a few class link or one or several link according to described event description parameter.In addition, the detection reported event parameter of link failure incident and link-recovery incident has been indicated the link that link failure incident and link-recovery incident take place respectively, described detection reported event parameter can for Linktype and or the chain line, then this to detect the indicated link of reported event parameter be a class or a few class link or one or several link.Therefore, MGC can determine that link failure incident or which link generation link-recovery incident have taken place which link according to described detection reported event parameter.About specifically how defining this link detecting bag, be not described in further detail at this.
In the link detecting bag of agreement H.248, detect the processing of link failure after the definition link failure incident for the inventive method below in conjunction with Fig. 1, and in the link detecting bag, define the processing that detects link failure after link failure incident and the link-recovery incident simultaneously and be illustrated respectively.
Fig. 1 is the inventive method one preferred embodiment handling process schematic diagram.As shown in Figure 1, after the definition link failure incident, the concrete treatment step that detects link failure is as follows in the link detecting bag:
Step 101:MGC sends link detecting and is notified to MGW.Usually, after the MGC registration, MGC will send this link detecting and be notified to MGW before setting up professional calling connection at MGW, like this, can guarantee that MGW just can continue the link failure between MGW and the MGC to detect when business brings into operation.
Here, for the accuracy that guarantees that message sends between MGC and the MGW, can also be after this step further execution in step 101 ': MGW return and confirm to respond to MGC, show and self successfully receive this link detecting notice, if MGC does not receive the affirmation response of MGW in predefined time threshold, think that then this link detecting notice sends failure, is notified to MGW and will resend this.
Step 102:MGW receives after the described notice of step 101, this notice is resolved, recognize event description parameter of the bag sign that wherein comprises the link detecting bag, link failure event identifier, link failure incident etc., learn that this notice is for carrying out the notice of link failure detection, then, the link detecting module of MGW begins the failure condition of the link of lasting current MGW of detection and MGC foundation.
Wherein, MGW for each bar link assignment of setting up between itself and the MGC link detecting module be responsible for detecting the failure condition of link.MGW determines according to the event description parameter of described link failure incident which link is carried out the link failure event detection, thereby the link detecting module that starts these links detects the link failure incident of self link.Usually, this event description parameter is a default value, and then MGW will carry out the link failure event detection to current all links, but which kind of value is this event description parameter be specially, and do not influence validity of the present invention.
The a certain link detecting module of step 103:MGW detects after self link generation link failure incident, MGW uses other normal link reporting links event of failures to notify to MGC immediately, and stop on this link that link failure incident takes place and send H.248 message, the H.248 message of required transmission all sends by other normal link.
Here, for the accuracy that guarantees that message sends between MGC and the MGW, can also be after this step further execution in step 103 ': MGC return and confirm to respond to MGW, show and self successfully receive this link failure event notice, if MGW does not receive the affirmation response of MGC in predefined time threshold, think that then this link failure event notice sends failure, will resend this and notify to MGC.
Step 104:MGC receives after the described link failure event notice of step 103, also stops on this link that link failure incident takes place and sends H.248 message, and the H.248 message of required transmission all sends by other normal link.
Here, MGC receives after the link failure event notice, recognize the detection reported event parameter of the bag sign, link failure event identifier and the link failure incident that comprise the link detecting bag in this notice etc., learn that this notice is the link failure event notice, and determine that according to this detection reported event parameter the link failure incident has taken place which link, thereby determine on which link, to stop to send H.248 message.
Because, in the step 103, described MGW stops at and sends the H.248 processing of message on the link that the link failure incident takes place and belong to processing among the MGW, and is separate with the processing among the MGC, therefore, this processing can with step 103 ' and the described processing of step 104 is parallel carries out.
According to above-mentioned processing as seen, in step 103, MGW detects after the link failure incident of a certain link, and MGC and MGW stop at immediately and send H.248 message on this link, has farthest avoided because the call loss that H.248 information drop-out caused on the link.
Above-mentioned steps 103 to step 104 is the processing that link failure incident link takes place at, MGW is according to the event description parameter of link event of failure in the link detecting notice of step 101, link for each bar generation link failure incident in the indicated link of this event description parameter all can be carried out the processing of above-mentioned steps 103 to step 104, thereby MGW can be in the link range of this event description parameter indication, with all link failure reporting events MGC that take place between current MGC and the MGW, and MGW and MGC are stopped on all links that the link failure incidents take place send H.248 message.
Because, the message relevant with link detecting that MGW sends in the above-mentioned processing procedure only has two, that is: the link failure event notice in the link detecting in the step 101 notice and the step 103, the situation that the frequent heartbeat detection message EVAC (Evacuation Network Computer Model) normal procedure that sends therefore, can as prior heartbeat detection mechanism, not occur.
In addition, for heartbeat detection mechanism, whether the regular hour thresholding need be set adjudicates link and interrupts, if threshold value is provided with higher, then can cause a large amount of call losses in the link down process, on the low side if threshold value is provided with, then might cause erroneous judgement to determine, that is: link does not break down, but adjudicates it and break down because of exceeding time threshold; And for the mechanism of the inventive method, in a single day MGW has detected link generation link failure incident is that the reporting links event of failure is notified to MGC, has both guaranteed the promptness of link failure detection, has also guaranteed the accuracy of testing result.
When the inventive method defined link failure incident and link-recovery incident simultaneously in the link detecting bag after, the processing and the above-mentioned steps 101 that detect link failure were similar to the processing of step 104, different processing as described below:
In the step 101, further comprise in the link detecting notice that MGC sent: the event description parameter of link-recovery event identifier, link-recovery incident.
In the step 102, MGW also further determines according to the event description parameter of described link-recovery incident which link is carried out the link-recovery event detection, thereby indicate the link detecting module of these links: proceed the link-recovery event detection after detecting the link failure incident of self link, and detecting the link-recovery incident after, continue detection link failure incident.Usually, this event description parameter is a default value, and then MGW will carry out the detection of link failure incident and link-recovery incident to current all links, but which kind of value is this event description parameter be specially, and do not influence validity of the present invention.
In addition, MGW after being detected the link failure incident, also further carries out following processing for the specified link of the event description parameter of link-recovery incident after step 104:
The link detecting module of step 105:MGW continues to detect the link-recovery incident of the described generation link failure of step 104 incident link.
Step 106: the described link detecting module of step 105 detects the link-recovery incident of this link, use immediately other normal link maybe the link reporting links of this generation link-recovery incident recover event notice to MGC, and beginning sends H.248 message on link of link-recovery incident takes place for this.
Here, for the accuracy that guarantees that message sends between MGC and the MGW, can also be after this step further execution in step 106 ': MGC return and confirm to respond to MGW, show and self successfully receive this link-recovery event notice, if MGW does not receive the affirmation response of MGC in predefined time threshold, think that then this link-recovery event notice sends failure, will resend this and notify to MGC.
Step 107:MGC receives after the described link-recovery event notice of step 106, also begins to send H.248 message on the link of this generation link-recovery incident.
Here, MGC receives after the link-recovery event notice, recognize the detection reported event parameter of the bag sign, link-recovery event identifier and the link-recovery incident that comprise the link detecting bag in this notice etc., learn that this notice is the link-recovery event notice, and determine that according to this detection reported event parameter the link-recovery incident has taken place which link, thereby determine on which link, to begin to send H.248 message.
Because, in the step 106, described MGW begins to send the H.248 processing of message and belongs to processing among the MGW on the link that the link-recovery incident takes place, separate with the processing among the MGC, therefore, this processing can with step 106 ' and the described processing of step 107 is parallel carries out.And, above-mentioned steps 105 is to the described detection link-recovery process that is treated among the MGW of step 107, separate with step 103 to the described troubleshooting process that detects after the link failure incident of step 104, therefore, this detects link-recovery process and troubleshooting process can parallel processing, that is: in the step 103, the link detecting module of MGW detects after self link occurs fault, can execution in step 105 to the described processing of step 107.
In addition, above-mentioned steps 105 to step 107 also is to detect processing at a link-recovery that link failure incident link takes place, MGW is according to the event description parameter of link-recovery incident in the link detecting notice of step 101, link for the generation link failure incident of each bar in the indicated link of this event description parameter all can be carried out above-mentioned steps 105 to the described processing of step 107, thereby the link-recovery reporting events MGC of all links that MGW can be in the link range of this event description parameter indication takes place between with current MGC and MGW, and make MGW and MGC begin on the link of link-recovery incidents takes place for all, to send H.248 message.
In addition, in the link detecting bag, define simultaneously in link failure incident and the link-recovery incident detection link failure processing procedure afterwards, in step 103, MGW has detected after the link generation link failure incident promptly can execution in step 105, and the link-recovery incident of this link is detected; In step 106, MGW detects and also can return step 102 after this link generation link-recovery incident, and the link failure incident of this link is detected.Like this, MGW can be circularly detects in real time to the failure condition and the recovery situation of link, not only the link failure incident that takes place between itself and the MGC in time can be reported MGC, substantially avoided the call loss in the link down process, and, MGW can also be with the link-recovery reporting events MGC of faulty link, makes MGC and MGW can recover communication on this link.Thereby, link detecting module among the MGW can be accomplished flexible detection and the real-time report to Link State, the link detecting module can just often continue to detect its link failure incident at link, and when this link generation link failure incident, continue to detect its link-recovery incident, really accomplish making full use of to each bar link between MGW and the MGC.
In sum, use the inventive method can fast detecting MGW and MGC between link failure so that MGC and MGW in time select other normal link to communicate, thereby avoid the call loss that in the service operation process, causes because of link down.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (8)
1, a kind of method that detects link failure between media gateway MGW and the media gateway controller MGC is characterized in that the method comprising the steps of:
A.MGC sends the link detecting notice to MGW, to MGW indication link event and the link that carries out the link event detection; This link event is defined in the link detecting bag of H.248 protocol extension definition;
B.MGW notifies indicated link event and link according to link detecting, begins to detect the link event on the described link; The reporting links event notice was given MGC when MGW detected link event; MGW according to detected link event on the link of current generation link event H.248 message send and to control; The link event that MGC reports according to MGW is notified indicated link event and the link of link event is taken place, and the H.248 message on the link of described generation link event is sent control.
2, method according to claim 1 is characterized in that, among the step a, the link event of described link detecting notice indication is the link failure incident;
Among the step b, MGW continues to detect the link failure incident up to detecting the link failure incident; The link event notice that is reported is the link failure event notice, this link failure event notice indication link failure incident and the link that the link failure incident takes place; Described MGW and MGC send the H.248 message on the link and are controlled to be: stop to send H.248 message.
3, method according to claim 2 is characterized in that,
Among the step a, the indication link event is that the described link detecting notice of link failure incident is indicated the link failure incident by the event description parameter of the self-contained bag sign of link detecting bag, link failure event identifier and link failure incident and carried out the link of link failure event detection;
Among the step b, described link failure event notice is by the self-contained bag sign of link detecting bag, link failure event identifier and the detection reported event parameter indication link failure incident of link failure incident and the link that the link failure incident takes place.
4, method according to claim 1, it is characterized in that, among the step a, the link event of described link detecting notice indication comprises link failure incident and link-recovery incident, the link that the link of this link detecting notice indication comprises the link that carries out the link failure event detection and carries out the link-recovery event detection;
Among the step b, MGW at first continues to detect the link failure incident of the indicated link that carries out the link failure event detection of step a;
When MGW detects the link failure incident, the link event notice that is reported is the link failure event notice, the link of this link failure event notice indication link failure incident and generation link failure incident, described MGW and MGC send the H.248 message on the link and are controlled to be: stop to send H.248 message, simultaneously, step a is indicated when carrying out the link generation link failure incident of link-recovery event detection, and MGW also continues to detect the link-recovery incident that link failure incident link takes place for this;
When MGW detects the link-recovery incident, the link event notice that is reported is the link-recovery event notice, the link of this link-recovery event notice indication link-recovery incident and generation link-recovery incident, described MGW and MGC send the H.248 message on the link and are controlled to be: begin to send H.248 message, simultaneously, MGW also continues to detect the link failure incident of current generation link-recovery incident link.
5, method according to claim 4 is characterized in that,
Among the step a, the event description parameter of the event description parameter of the described link detecting notice of indication link failure incident and link-recovery incident by the self-contained bag sign of link detecting bag, link failure event identifier, link failure incident, link-recovery event identifier, link-recovery incident indicates link failure incident, link-recovery incident, carry out the link of link failure event detection, carry out the link of link-recovery event detection;
Among the step b, described link failure event notice is by the self-contained bag sign of link detecting bag, link failure event identifier and the detection reported event parameter indication link failure incident of link failure incident and the link that the link failure incident takes place; Described link-recovery event notice is by the self-contained bag sign of link detecting bag, link-recovery event identifier and the detection reported event parameter indication link-recovery incident of link-recovery incident and the link that the link-recovery incident takes place.
6, method according to claim 1 is characterized in that, among the step a, described MGW further returns the affirmation response to MGC after receiving the link detecting notice.
7, method according to claim 1 is characterized in that, among the step b, described MGC further returns the affirmation response to MGW after receiving the link event notice.
8, method according to claim 1 is characterized in that, among the step b, MGW detects the link event of link separately by the link detecting module of each bar link.
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| WO2011120271A1 (en) * | 2010-04-02 | 2011-10-06 | 中兴通讯股份有限公司 | Method, system and media gateway for realizing detection of network failure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101778179B (en) * | 2009-01-09 | 2014-10-08 | 华为技术有限公司 | Method, system, media gateway for reporting dual tone multi-frequency(DTMF) number |
| CN101667864B (en) * | 2009-09-28 | 2012-05-23 | 中兴通讯股份有限公司 | Method of descending physical link fault diagnosis, system and device |
| CN102624571A (en) * | 2011-01-26 | 2012-08-01 | 中兴通讯股份有限公司 | Detection method and system |
| CN102577483A (en) * | 2011-12-23 | 2012-07-11 | 华为技术有限公司 | Method, device and system for service realization when failures occur in media gateway controller |
| CN113225762B (en) * | 2020-02-04 | 2022-11-22 | 大唐移动通信设备有限公司 | Method and device for establishing stream control transmission protocol link |
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| CN1378368A (en) * | 2001-03-28 | 2002-11-06 | 日本电气株式会社 | Net gate system and fault management method |
| CN1452347A (en) * | 2002-04-20 | 2003-10-29 | 深圳市中兴通讯股份有限公司 | Method for detecting medium gateway controller and medium between-gateways link state |
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| WO2011120271A1 (en) * | 2010-04-02 | 2011-10-06 | 中兴通讯股份有限公司 | Method, system and media gateway for realizing detection of network failure |
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| CN1725716A (en) | 2006-01-25 |
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