CN1885962A - Realization method for controlling and bearing dual homing in separate network - Google Patents
Realization method for controlling and bearing dual homing in separate network Download PDFInfo
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- CN1885962A CN1885962A CN200510035480.6A CN200510035480A CN1885962A CN 1885962 A CN1885962 A CN 1885962A CN 200510035480 A CN200510035480 A CN 200510035480A CN 1885962 A CN1885962 A CN 1885962A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1033—Signalling gateways
- H04L65/104—Signalling gateways in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1023—Media gateways
- H04L65/103—Media gateways in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
- H04M7/125—Details of gateway equipment
- H04M7/1255—Details of gateway equipment where the switching fabric and the switching logic are decomposed such as in Media Gateway Control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
- H04Q3/0025—Provisions for signalling
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Abstract
The related dual-attaching network technique with divided control and carry comprises: the main MGCF detects all faults of MC interface linkage connected to MGW or requires MGW to register on MGCF; the main MGCF closes the linkage, and the standby MGCF activates the linkage correlated with the MGW, and refreshes the called routing information by changing the internal calling of main MGCF and MGW into interoffice calling and other interoffice calling into the internal calling.
Description
Technical field
The present invention relates to control and carry the network technology of separating, particularly the dual-homed implementation method in control and the carrying separated network.
Background technology
Enter the communications industry of 21 century, the undoubted non-next generation network of the most breathtaking two big new technologies (Next Generation Network is called for short " NGN ") does not belong to 3G (Third Generation) Moblie (3rdGeneration is called for short " 3G ").NGN is a much-talked-about topic of communicating by letter the industry concern at present and inquiring into, and Virtual network operator, equipment manufacturers and each telecommunication standardization tissue and numerous technical forum all paying close attention to NGN, propose to describe NGN from different perspectives separately to the imagination of NGN one after another.Up to now, had how tame telecommunications operator to actively develop test and commercial deployment the aspect NGN in the global range, the big telecom operators of domestic each also all begin the test or the networking of being correlated with.And 3G is another focus that attracts eyeball, the developing state of 3G in the whole world shows recently, the 3G business has particularly obviously been accelerated based on the development speed of the aspects such as business, customers and industrial chain of Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, be called for short " WCDMA ") standard.We can say that global mobile communication steers a steady course to the evolution of WCDMA.
NGN and WCDMA technology have sizable correlation.As the MGCF of NGN core technology, be a kind of distributed exchange and controlling platform based on software, its notion is based on new network function model layering.And WCDMA has just introduced the MGCF technology in circuit domain to the R4 version, the network configuration that adopts carrying and control to be separated, realize mobile MGCF server and the media gateway physical separation of (Media Gateway is called for short " MGW "), met the evolution trend of NGN network.This shows, in network architecture such as NGN or WCDMA, all introduced isolating construction, be Media Gateway Controller (Media Gateway Control Function, be called for short " MGCF ") and MGW, MGCF finishes CCF usually, and MGW finishes bearing function usually.A MGCF can control a plurality of MGW by the MC interface, and the business that realized is separated with calling control.
Just because of business and separating that calling is controlled, cause occuping the control aspect MGCF be in relative consequence, so usually when a MGCF fault or during MC (media gateway controlling) interface link fault, the MGW that it is controlled also will be out of hand, user's regular traffic just can't be handled, and need to prove here, and the MC interface is the interface between MGCF and the MGW, H.248 or the call bearer control protocol of MGCP use is based on, and major function is the medium controls.Influence all MGW business that it is controlled for fear of MGCF network element Single Point of Faliure, will carry out fault-tolerant processing for this MGCF is provided with alternate device.Dual-homed is exactly that a MGW can belong to two or more MGCF that backup relation is arranged from control, after so being provided with, will reduce greatly the whole network influence on system operation during the MGCF fault or during MC interface link fault.
Those of ordinary skill in the art know that H.248 MGCF is based on or the MGCP agreement is controlled MGW, are implemented in conversion between the calling control of the calling control of circuit domain and packet domain; Existing H.248, the MGCP protocol definition after MGW receives the indication of MGCF, can be according to indication again to other MGCF registrations, after succeeding in registration, MGCF just can control MGW.Existing protocol does not define other processes, dual-homed is a systemic-function, relating to a plurality of network elements cooperatively interacts, be that simple registration is done like this and is nowhere near, the signaling link relevant with this MGW all can't automatically switch to new MGCF, though can cause new MGCF to obtain control on the surface, in fact still can't handle the calling of MGW to MGW.
Summary of the invention
In view of this, main purpose of the present invention is to provide the dual-homed implementation method in a kind of control and the carrying separated network, makes dual-homed scheme improve.
For achieving the above object, the invention provides the dual-homed implementation method in a kind of control and the carrying separated network, this network comprises primary, spare MGCF, with at least one media gateway, when described master detects the whole faults of media gateway control interface link that connect described media gateway with MGCF, or after described media gateway transmission required its signaling that is registered to described standby MGCF, described method comprised following steps:
The described master of A closes the signaling link relevant with described media gateway with MGCF;
The described standby MGCF of B activates the signaling link relevant with described media gateway;
The described primary, spare MGCF of C refreshes called routing iinformation.
Wherein, in the described steps A, for be transmitted to described main link from miscellaneous equipment with MGCF, when the media gateway control interface of described media gateway was led with the Equipment Control beyond the MGCF by this, this master initiatively closed with MGCF or blocks the signaling link that only relates to this media gateway and connects (connecting as SCTP SCTP).
In this external described method, in the described steps A, for by the interoffice signaling of described master, described main with the MGCF active barrage or close only relevant signaling link with this media gateway with the direct external interface of MGCF.
In this external described method, among the described step B, for the link that is transmitted to described standby MGCF from miscellaneous equipment, after the media gateway control interface interface of described media gateway succeeded in registration, this standby MGCF initiatively activated or sets up the relevant signaling link of this media gateway and connects (connecting as SCTP).
In this external described method, among the described step B, for interoffice signaling by the direct external interface of described standby MGCF, after the media gateway control interface interface of described media gateway succeeded in registration, this standby MGCF was initiatively opened the signaling link relevant with this media gateway.
In this external described method, the described link that is transmitted to described standby MGCF from miscellaneous equipment can be following any (below being not limited to):
The adaptive link of message transfer part 2 users, the adaptive link of message transfer part 3 users, the adaptive link of links and accesses protocol version 5 users or integrated services digital network network be the adaptive link of user, wireless access network applying portion, base station application part or the like Q.921.
In this external described method, described miscellaneous equipment can be media gateway or SGW.
In this external described method, described interoffice signaling can be following any:
Bearer independent call control signaling or standard interoffice signalings such as Session initiation Protocol signaling or SS7 signaling.
In this external described method, described step C comprises following substep:
Described master changes office call relevant with described media gateway in the described called routing iinformation into station to station call with MGCF;
Described standby MGCF changes the station to station call between other subordinate media's gateway and the described media gateway in the described called routing iinformation into office call.
In this external described method, described control and carrying separated network can be next generation network or internet protocol multimedia subsystem.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, main detect the whole faults of MC interface link that connect MGW or main when requiring MGW to be registered to standby MGCF with MGCF with MGCF, the master closes the signaling link relevant with this MGW with MGCF, standby MGCF activates the signaling link relevant with this MGW, and primary, spare MGCF refreshes called routing iinformation.
When refreshing called routing iinformation, change station to station call into office call relevant among the MGCF, change the station to station call between MGW described in the standby MGCF and other subordinate MGW of this standby MGCF into office call with described MGW with main.
Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly by the pass that increases signaling link, the refresh step of opening step and called routing iinformation, make dual-homed scheme practicability, allow MGW when MGCF fault or MC interface connection fault, find available MGCF as soon as possible, and take over the business of this MGW by this MGCF.
Description of drawings
Fig. 1 is the dual-homed implementation method flow chart according to a preferred embodiment of the present invention;
Fig. 2 is according to the preceding network state figure of breaking down of a preferred embodiment of the present invention;
Fig. 3 is the network state figure of back MGW when being registered to standby MGCF that break down of the MC interface according to a preferred embodiment of the present invention;
Fig. 4 is according to the network state figure after the dual-homed switching of finishing of a preferred embodiment of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Control and carrying separated network have multiple, and for example the internet protocol multimedia subsystem in NGN and the 3G standard (IP Multimedia Subsystem, be called for short " IMS ") etc. is that example describes in the following embodiments with NGN.
Realize dual-homed system as shown in Figure 2 among the NGN under the normal condition.Wherein, S1, S2 are the MGCF of two relations of backuping each other, and MG1, MG2 and MG3 are three media gateway (MGW), and LE1, LE2 and LE3 are three local switching networks (Local Exchange are called for short " LE ").Connect by the signaling between the MGCF between S1 and the S2; MG1 is connected with S1 with the MC interface by UA (user is adaptive) signaling with MG2, and MG3 is connected with S2 with the MC interface by the UA signaling; Carrying is connected with relaying by the arrowband signaling between MG1 and the LE1, and carrying is connected with relaying by the arrowband signaling between MG2 and the LE2, and carrying is connected with relaying by the arrowband signaling between MG3 and the LE3.
The arrowband signaling is sent to MGCF by corresponding UA signaling usually, Signaling System Number 7 (Signalling System No.7 for example, be called for short " SS7 "), can pass through adaptive (the MTP2User Adaptation of message transfer part 2 users, be called for short " M2UA ") or adaptive (the MTP3User Adaptation of message transfer part 3 users, be called for short " M3UA ") to MGCF, when the arrowband signaling is passed through the UA signaling to MGCF, usually by a kind of SGW (Signaling Gateway, abbreviation " SG ") equipment is to MGCF, SG equipment among Fig. 2 is embedded on the MG, and SG also can place separately in other embodiments.
As shown in Figure 1, in step 110, the master judges whether to satisfy the condition that MGW re-registers standby MGCF with MGCF, if then enter step 120, otherwise continues monitoring.
The condition that MGW re-registers standby MGCF can have two:
Condition 1:MGW is after judging MC interface link fault, and MGW can be registered on the standby MGCF automatically.This situation can be referring to Fig. 3.MG2 is to the MC interface fault of S1MGCF among this figure, and MG2 is registered on the S2.Being familiar with those of ordinary skill in the art can know, if it is main with the generation problem of MGCF own (for example the master is crashed with MGCF), MGW can think that also thereby the MC interface fault causes the process that is registered to standby MGCF, in this case, just do not need to have carried out with the relevant step of MGCF (part of being correlated with MGCF with the master in the whole and step 140 of step 120) with main below.
Condition 2:MGW receives that MGCF requires the order to backup MGCF registration.
In step 120, if main working properly, there is not fault with MGCF, then close the signaling link relevant with this MGW.
At above-mentioned condition 1, if main with MGCF discovery MC interface fault, then the master initiatively closes all only relevant with this MGW signaling links with MGCF.
At above-mentioned condition 2, if the master requires MGW to register to standby MGCF with MGCF, then the master initiatively closes all only relevant with this MGW signaling links with MGCF.
MGCF closes with the method for the relevant signaling link of this MGW two kinds:
First kind of method for closing: to M2UA, M3UA, adaptive (the LAPV5 User Adaptation of links and accesses protocol version 5 users, be called for short " V5UA "), the integrated services digital network network Q.921 the user adaptive (ISDN is Adaptation Q.921-User, be called for short " IUA "), wireless access network applying portion (Radio Access Network Application Part, be called for short " RANAP "), base station application part (Base Station Application Part, be called for short " BSAP ") or the like be transmitted to the link of MGCF from other equipment such as MGW or SG, when the MC of this gateway interface not when this MGCF controls, MGCF initiatively closes or blocks the SCTP (Stream ControlTransmission Protocol is called for short " SCTP ") that only relates to this gateway and connects.
Second kind of method for closing: to bearer independent call control (Bearer Independent Call Control, abbreviation " BICC "), Session initiation Protocol (Session Initation Protocol, be called for short " SIP ") etc. the interoffice signaling of type, by the direct external interface of MGCF, not by MGW or SG, then this gateway MC interface is when this gateway is controlled, and MGCF is active barrage or close only relevant with this gateway signaling link also.
The implication of relevant with MGW signaling link is described: as long as the traffic resource of signaling that transmits and specific MGW is relevant once here, then all be the signaling relevant with this MGW, initial address message (Initial Address Message for example, be called for short " IAM ") in, take the relay resource of this MGW, then this signaling is relevant with this MGW, the link that transmits these signalings is exactly the signaling link relevant with this MGW resource, and the characteristics of these links are exactly that their signalings of transmitting are only relevant with this MGW speech channel.Speech channel and signaling as LE2 among Fig. 2 arrive MG1, and when every needs were communicated by letter with MG1, LE2 can be mutual by this arrowband signaling and MGCF.
After this enter step 130,, do not have fault if standby MGCF is normal, then when finding new MGW registration, initiatively activate all signaling links relevant, from essence with this MGW, as long as a MGW succeeds in registration to a MGCF, then this MGCF just should take over the relevant signaling of this MGW.
MGCF activates has two kinds with the method for the relevant signaling link of this MGW:
First kind of Activiation method: the link that M2UA, M3UA, V5UA, IUA or the like is transmitted to MGCF from other equipment such as MGW or SG, after the MC of new gateway interface succeeds in registration, when MGW controlled at this MGCF, the signaling SCTP that MGCF initiatively activated or set up this gateway connected.
Second kind of Activiation method: to the interoffice signaling of types such as BICC, SIP, by the direct external interface of MGCF, not by MGW or SG, after then this gateway MC succeeded in registration, MGCF also initiatively opened the signaling link relevant with this gateway.
In the example shown in Fig. 2,3, through after the step 120 and 130, the network form as shown in Figure 4.S1 finds the MC interface fault of MG2, so close the UA signaling link of MG2 to oneself, S2 finds that MG2 is registered to oneself, then opens the signaling link relevant with MG2.
After this enter step 140, primary, spare MGCF refreshes called routing iinformation.When main part MGW with MGCF below is registered to when backing up below the MGCF, the former former head will become station to station call between the active and standby MGCF with the calling between the inner different MG W of MGCF, and the station to station call between that MGW of other MGW and new registration will become office call among original standby MGCF, so need make amendment to called routing iinformation.
Specifically, the master changes office call relevant with the new MGW that breaks away from the called routing iinformation into station to station call with MGCF, and standby MGCF changes the station to station call between the MGW of other subordinate MGW and new registration in the called routing iinformation into office call.With Fig. 4 is example, for S1, changes office call relevant with MG2 in the called routing iinformation (calling between MG1 and the MG2) into station to station call; For S2, change the station to station call between MG2 and the MG3 in the called routing iinformation into office call.
Though by with reference to some preferred embodiment of the present invention, the present invention is illustrated and describes, those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. control and the dual-homed implementation method of carrying in the separated network, this network includes MGCF entity and at least one media gateway of primary, spare relation at least,
It is characterized in that, when described master detects the whole faults of media gateway control interface link that connect described media gateway with MGCF, or after described media gateway transmission required its signaling that is registered to described standby MGCF, described method comprised following steps:
The described master of A closes the signaling link relevant with described media gateway with MGCF;
The described standby MGCF of B activates the signaling link relevant with described media gateway;
The described primary, spare MGCF of C refreshes called routing iinformation.
2. the dual-homed implementation method in control according to claim 1 and the carrying separated network, it is characterized in that, in the described steps A, for be transmitted to described main link from miscellaneous equipment with MGCF, when the media gateway control interface of described media gateway was led with the Equipment Control beyond the MGCF by this, this master initiatively closed with MGCF or blocks the signaling link that only relates to this media gateway and connects.
3. the dual-homed implementation method in control according to claim 1 and the carrying separated network, it is characterized in that, in the described steps A, for by the interoffice signaling of described master, described main with the MGCF active barrage or close only relevant signaling link with this media gateway with the direct external interface of MGCF.
4. the dual-homed implementation method in control according to claim 1 and the carrying separated network, it is characterized in that, among the described step B, for the link that is transmitted to described standby MGCF from miscellaneous equipment, after the media gateway control interface interface of described media gateway succeeded in registration, this standby MGCF initiatively activated or sets up the relevant signaling link of this media gateway and connects.
5. the dual-homed implementation method in control according to claim 1 and the carrying separated network, it is characterized in that, among the described step B, for interoffice signaling by the direct external interface of described standby MGCF, after the media gateway control interface interface of described media gateway succeeded in registration, this standby MGCF was initiatively opened the signaling link relevant with this media gateway.
6. according to the dual-homed implementation method in claim 2 or 4 described controls and the carrying separated network, it is characterized in that, the described link that is transmitted to described standby MGCF from miscellaneous equipment can be following any:
The adaptive link of message transfer part 2 users, the adaptive link of message transfer part 3 users, the adaptive link of links and accesses protocol version 5 users or integrated services digital network network be the adaptive link of user, wireless access network applying portion, base station application part or the like Q.921.
7. according to the dual-homed implementation method in claim 2 or 4 described controls and the carrying separated network, it is characterized in that described miscellaneous equipment can be media gateway or SGW.
8. according to the dual-homed implementation method in claim 3 or 5 described controls and the carrying separated network, it is characterized in that, described interoffice signaling can be following any:
Bearer independent call control signaling or Session initiation Protocol signaling or Signaling System Number 7 etc.
9. according to the dual-homed implementation method in each described control in the claim 1 to 5 and the carrying separated network, it is characterized in that described step C comprises following substep:
Described master changes office call relevant with described media gateway in the described called routing iinformation into station to station call with MGCF;
Described standby MGCF changes the station to station call between other subordinate media's gateway and the described media gateway in the described called routing iinformation into office call.
10. the dual-homed implementation method in control according to claim 1 and the carrying separated network is characterized in that, described control and carrying separated network can be next generation network or internet protocol multimedia subsystem.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100354806A CN100459738C (en) | 2005-06-21 | 2005-06-21 | Realization method for controlling and bearing dual homing in separate network |
| RU2007110854/09A RU2360377C2 (en) | 2004-08-29 | 2005-08-29 | Double connection method |
| AU2005279575A AU2005279575B2 (en) | 2004-08-29 | 2005-08-29 | A method for implementing dual-homing |
| BRPI0514699-2A BRPI0514699B1 (en) | 2004-08-29 | 2005-08-29 | DOUBLE HOMING IMPLEMENTATION EQUIPMENT METHOD, SYSTEM AND PART |
| PCT/CN2005/001345 WO2006024225A1 (en) | 2004-08-29 | 2005-08-29 | A method for achieving double ascription |
| EP05781860A EP1777893A4 (en) | 2004-08-29 | 2005-08-29 | A method for achieving double ascription |
| PCT/CN2006/000933 WO2006136075A1 (en) | 2005-06-21 | 2006-05-10 | A method for implementing double-belongingness in separating the controlling from bearing network |
| US11/709,263 US8116760B2 (en) | 2004-08-29 | 2007-02-22 | Method for implementing dual-homing |
| US13/350,261 US8571546B2 (en) | 2004-08-29 | 2012-01-13 | Method for implementing dual-homing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100354806A CN100459738C (en) | 2005-06-21 | 2005-06-21 | Realization method for controlling and bearing dual homing in separate network |
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| CN1885962A true CN1885962A (en) | 2006-12-27 |
| CN100459738C CN100459738C (en) | 2009-02-04 |
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| CNB2005100354806A Active CN100459738C (en) | 2004-08-29 | 2005-06-21 | Realization method for controlling and bearing dual homing in separate network |
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| CN (1) | CN100459738C (en) |
| WO (1) | WO2006136075A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012034415A1 (en) * | 2010-09-15 | 2012-03-22 | 中兴通讯股份有限公司 | Method, device and system for testing ip interface |
| CN101822024B (en) * | 2007-08-13 | 2012-12-12 | 诺基亚西门子通信公司 | Support of media oriented negotiation acceleration procedures in split architecture |
| CN103391275A (en) * | 2012-05-09 | 2013-11-13 | 华为技术有限公司 | Method, device and system for providing main called service in IP multimedia subsystem framework |
| CN105577437A (en) * | 2015-12-23 | 2016-05-11 | 河北远东通信系统工程有限公司 | Master-slave ownership-based AGCF device disaster-tolerant backup method |
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| WO2019006751A1 (en) * | 2017-07-07 | 2019-01-10 | Arris Enterprises Llc | A method of providing management and control of hotspots with reduced messaging |
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| US6885658B1 (en) * | 1999-06-07 | 2005-04-26 | Nortel Networks Limited | Method and apparatus for interworking between internet protocol (IP) telephony protocols |
| JP2002084363A (en) * | 2000-09-06 | 2002-03-22 | Nec Corp | Gateway system and line control method used therefor |
| CN1423458A (en) * | 2001-11-30 | 2003-06-11 | 深圳市中兴通讯股份有限公司 | Method for realizing signalling chair-circuit redundant back-up in IP network |
| CN1536819B (en) * | 2003-04-11 | 2010-08-04 | 华为技术有限公司 | Method for implementing dual location in next network |
| WO2005025143A1 (en) * | 2003-09-05 | 2005-03-17 | Utstarcom (China) Co. Ltd. | Method of detecting the status of a media gateway controller by a media gateway |
| CN100463538C (en) * | 2003-11-27 | 2009-02-18 | 中兴通讯股份有限公司 | Method and system for improving reliability of soft switch using off-site backup |
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- 2005-06-21 CN CNB2005100354806A patent/CN100459738C/en active Active
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2006
- 2006-05-10 WO PCT/CN2006/000933 patent/WO2006136075A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101822024B (en) * | 2007-08-13 | 2012-12-12 | 诺基亚西门子通信公司 | Support of media oriented negotiation acceleration procedures in split architecture |
| WO2012034415A1 (en) * | 2010-09-15 | 2012-03-22 | 中兴通讯股份有限公司 | Method, device and system for testing ip interface |
| CN102404163A (en) * | 2010-09-15 | 2012-04-04 | 中兴通讯股份有限公司 | Test method, device and system of IP interface |
| CN103391275A (en) * | 2012-05-09 | 2013-11-13 | 华为技术有限公司 | Method, device and system for providing main called service in IP multimedia subsystem framework |
| CN103391275B (en) * | 2012-05-09 | 2017-03-15 | 华为技术有限公司 | Method, the Apparatus and system of calling and called service are provided under a kind of IP Multimedia System framework |
| CN105577437A (en) * | 2015-12-23 | 2016-05-11 | 河北远东通信系统工程有限公司 | Master-slave ownership-based AGCF device disaster-tolerant backup method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006136075A1 (en) | 2006-12-28 |
| CN100459738C (en) | 2009-02-04 |
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