CN101420368B - Method for implementing media hairpin by SBC - Google Patents
Method for implementing media hairpin by SBC Download PDFInfo
- Publication number
- CN101420368B CN101420368B CN2007101817382A CN200710181738A CN101420368B CN 101420368 B CN101420368 B CN 101420368B CN 2007101817382 A CN2007101817382 A CN 2007101817382A CN 200710181738 A CN200710181738 A CN 200710181738A CN 101420368 B CN101420368 B CN 101420368B
- Authority
- CN
- China
- Prior art keywords
- sbc
- signaling
- media information
- terminal
- media
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention provides a method for realizing a media straight-through function for a SBC. According to the present invention, the media straight-through function is opened for the users in the network environment of a same side of the same SBC, therefore, cost of media processing is reduced and the performance of the SBC is improved to a certain extent.
Description
Technical field
The present invention relates in communication field next generation network (NGN) framework based on the Session Border Controller (SBC) of marginal layer, the IAD and the core layer soft switch of Access Layer, if realization is satisfied certain precondition for the IAD under same SBC equipment, can carry out straight-through (hairpin) function of medium.
Background technology
As shown in Figure 1, in the prior art, SBC should comprise two logic entities, wherein, SGW controller (SGC:Signaling Gate Controller) only carries out the conversion of PSTN/ISDN signaling bottom, promptly convert the TCP/IP load mode to, do not change its bottom application message from the Time Division Multiplexing circuit mode.Signaling after the conversion sends communication automated system (CA) to, and CA controls the connection and the release of media gateway (MG) according to signaling.
Therefore, CA just really analyzes and handles signaling message, and carries out the intercommunication exchange of application layer, and the control Media proxy.
In SBC, Media proxy (MP:Media Proxy) receives the flow through Media Stream of SBC of the instruction of SGC and processing.In calling, the SGC in the SBC equipment mainly is the forwarding of carrying out signaling, and MP mainly is to the transmitting of medium, and for the foundation and the release of medium, is controlled by SGC fully.
Below, SBC is described for the processing of signaling and Media Stream.
As shown in Figure 2, in the prior art, signaling and medium are all by the SBC device forwards.Its basic call flow has marked out the call flow of each signaling medium as shown in Figure 3 in Fig. 3.
As shown in Figure 4, as a basic call flow, its basic call flow comprises:
Step 1: caller makes a call, the SDP of caller describes (media address and the port that mainly comprise oneself) on the signaling band, related media resource (a pair of media port in the interior outside of SBC application caller, be used for carrying out continuing of medium), the foundation that the MP module is transmitted according to these medium of finishing caller;
IP (media address) and port were replaced during step 2:SBC described caller SDP, medium IP and the port promptly revised during caller SDP1 describes in the signaling are the related content of the resource that SBC applied in step 1, and the signaling that will revise simultaneously after SDP describes is issued Softswitch;
Step 3: after Softswitch carries out the attribute processing to this signaling, send back to SBC, SBC receives signaling (containing the amended caller SDP (SBC1) by SBC), and the related resource (a pair of media port in the interior outside) that the SBC application is called is finished the foundation that called medium are transmitted;
Medium IP and PORT (port) that step 4:SBC replaces among this SDP are the relevant information of the resource that SBC applied for, issue amended signaling (containing the SDP information that SDP was revised by SBC) called then;
Step 5: so far, called media address and the port that obtains caller, actual is the address of SBC, medium are transmitted as shown in table 1;
Table 1:
| IP sbc1、PORT sbc1 |
| IP ext2、POR Text2 |
| IP int2、PORT int2 |
| IP 2、PORT 2 |
Step 6: called echoing answered, with the SDP2 of the SDP description of going up oneself;
Step 7:SBC also can come the information of SDP2 is made amendment according to the relevant information of the resource of being applied for, 2 to 5 make amendment to the information of SDP2 as the step, send to caller again;
Step 8: called address and port have just been known in caller like this, and reality also is address and the port of SBC, and setting up that the caller medium are transmitted is as shown in table 2;
Table 2:
| IP sbc2、PORT sbc2 |
| IP ext1、PORT ext1 |
| IP int1、PORT int1 |
| IP 1、PORT 1 |
Step 9: this moment, calling and called were all known the other side's address and port, and media channel is set up.
Can see that more than for two terminals under the SBC that coexists, the signaling of terminal and medium all pass through SBC, make SBC become the agency of signaling and medium.
Summary of the invention
In view of the above problems, the object of the invention is to provide a kind of SBC to realize the mode that medium are straight-through, and it opens the hairpin function for the user in the network environment that belongs to the same side under the same SBC, reduce medium and handle the expense of bringing, improved the performance of SBC to a certain extent.
According to the present invention, provide a kind of SBC to realize the method that medium are straight-through, it comprises: step 1, first terminal is sent calling, and send first signaling of carrying first media information to SBC, SBC is converted to second signaling and second media information after first signaling and first media information are handled, and send second signaling carry second media information to Softswitch, after Softswitch carries out attribute change processing to second medium that carry in second signaling, the 3rd signaling of the 3rd media information is carried in generation, and the 3rd signaling that will carry the 3rd media information sends back to SBC; Step 2, SBC is under the identical situation of the media resource of finding to apply for from the 3rd media information and SBC self of Softswitch, judge that first terminal and second terminal are under same SBC, and the content of the 3rd media information replaced with the content of the first original media information of first terminal, SBC sends and carries the 4th signaling of fourth media information to second terminal then; Step 3, second terminal receive the 4th signaling of carrying fourth media information, and second terminal is sent response, and the 5th signaling of carrying the 5th media information is sent to SBC; Step 4, SBC is converted to the 6th signaling of carrying the 6th media information after the 5th signaling second terminal, that carry the 5th media information is handled, and send the 6th signaling carry the 6th media information to Softswitch, after Softswitch carries out attribute change processing to the 6th media information that carries in the 6th signaling, the 7th signaling of the 7th media information is carried in generation, and the 7th signaling that will carry the 7th media information sends back to SBC; Step 5, SBC is under the identical situation of the media resource of finding to apply for from the 7th medium and SBC self of Softswitch, judge that first terminal and second terminal are under same SBC, and the 7th media information of second terminal replaced with the 5th original media information of second terminal, SBC sends and carries the 8th signaling of the 8th media information to first terminal then; Step 6, first terminal receive from the 8th signaling SBC, that carry the 8th media information; And step 7, first terminal and second terminal are set up media channel by the 8th media information and the fourth media information that receive.
Wherein, in step 1, comprise: first terminal to SBC send carry first signaling of first media information after, SBC applies for the first terminal media resource, and is transmitted by the medium that the MP of SBC sets up first terminal; SBC will replace with the first terminal media resource that SBC applies for from first media information of first terminal, generate second signaling of carrying second media information, and transmission is carried second signaling of second media information to Softswitch; Softswitch receives from second signaling SBC, that carry second media information, after second medium that carry in to second signaling carry out attribute change processing, the 3rd signaling of the 3rd media information is carried in generation, and transmission is carried the 3rd signaling of the 3rd media information to SBC; SBC receives from the 3rd signaling Softswitch, that carry the 3rd media information, and applies for the second terminal media resource, and the MP module of SBC is set up the medium of second terminal and transmitted.
And, comprise in step 4: SBC will replace with the second terminal media resource of SBC application from the 5th media information of second terminal, the 6th signaling of the 6th media information is carried in generation, and transmission is carried the 6th signaling of the 6th media information to Softswitch; Softswitch receives from the 6th signaling SBC, that carry the 6th media information, after the 6th media information carries out attribute change processing in to the 6th signaling, the 7th signaling of the 7th media information is carried in generation, sends and carries the 7th signaling of the 7th media information to SBC; SBC receives from the 7th signaling Softswitch, that carry the 7th media information.
In addition, first terminal and second terminal the same side network environment under same SBC.First terminal and second terminal transmit signaling by SBC, and, the direct intercommunication of medium of first terminal and second terminal.
Therefore,,, open the hairpin function, reduce medium and handle the expense of bringing, improved the performance of SBC to a certain extent for the user in the network environment that belongs to the same side under the same SBC by the present invention.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the basic framework figure of SBC;
Fig. 2 is the key diagram of signaling flow and Media Stream;
Fig. 3 is the key diagram of basic call networking diagram;
Fig. 4 is the flow chart that is used for illustrating the prior art basic call;
Fig. 5 is based on the flow chart that SBC of the present invention realizes the method that medium are straight-through;
Fig. 6 is based on the key diagram of the calling networking diagram under the hairpin pattern of the embodiment of the invention;
Fig. 7 is based on the flow chart of the calling under the hairpin pattern of the embodiment of the invention; And
Fig. 8 is the schematic diagram of networking mode under the hairpin pattern.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
SBC is a SGW controller and Media proxy, heterogeneous networks (is under the different SBC equipment, perhaps in the both sides network of same SBC) the user between media communication, SBC has set up a media channel, but for the user in belonging to a network environment (network environment of the same side under the same SBC), medium no doubt can allow medium transmit by SBC equipment, if but also can directly arrive the other side without SBC equipment, can open the hairpin function, reduce medium and handle the expense of bringing, improved the performance of SBC to a certain extent.
Fig. 5 is based on the flow chart that SBC of the present invention realizes the method that medium are straight-through.
As shown in Figure 5, realize that by SBC the straight-through method of medium comprises:
Step S502, first terminal (calling terminal) is sent calling, and send first signaling of carrying first media information to SBC, SBC is converted to second signaling and second media information after first signaling and first media information are handled, and send second signaling carry second media information to Softswitch, after Softswitch carries out attribute change processing to second medium that carry in second signaling, the 3rd signaling of the 3rd media information is carried in generation, and the 3rd signaling that will carry the 3rd media information sends back to SBC;
Step S504, SBC is under the identical situation of the media resource of finding to apply for from the 3rd media information and SBC self of Softswitch, judge that first terminal and second terminal are under same SBC, and the content of the 3rd media information replaced with the content of the first original media information of first terminal, SBC sends and carries the 4th signaling of fourth media information to second terminal (terminal called) then;
Step S506, second terminal receives the 4th signaling of carrying fourth media information, and second terminal is sent response, and the 5th signaling of carrying the 5th media information is sent to SBC;
Step S508, SBC is converted to the 6th signaling of carrying the 6th media information after the 5th signaling second terminal, that carry the 5th media information is handled, and send the 6th signaling carry the 6th media information to Softswitch, after Softswitch carries out attribute change processing to the 6th media information that carries in the 6th signaling, the 7th signaling of the 7th media information is carried in generation, and the 7th signaling that will carry the 7th media information sends back to SBC;
Step S510, SBC is under the identical situation of the media resource of finding to apply for from the 7th medium and SBC self of Softswitch, judge that first terminal and second terminal are under same SBC, and the 7th media information of second terminal replaced with the 5th original media information of second terminal, SBC sends the 8th signaling of carrying the 8th media information to first terminal then:
Step S512, first terminal receives from the 8th signaling SBC, that carry the 8th media information; And
Step S514, first terminal and second terminal are set up media channel by the 8th media information and the fourth media information that receive.
Wherein, in step S502, comprise: first terminal to SBC send carry first signaling of first media information after, SBC applies for the first terminal media resource, and is transmitted by the medium that the MP of SBC sets up first terminal; SBC will replace with the first terminal media resource that SBC applies for from first media information of first terminal, generate second signaling of carrying second media information, and transmission is carried second signaling of second media information to Softswitch; Softswitch receives from second signaling SBC, that carry second media information, after second medium that carry in to second signaling carry out attribute change processing, the 3rd signaling of the 3rd media information is carried in generation, and transmission is carried the 3rd signaling of the 3rd media information to SBC; SBC receives from the 3rd signaling Softswitch, that carry the 3rd media information, and applies for the second terminal media resource, and the MP module of SBC is set up the medium of second terminal and transmitted.
And, comprise in step S508: SBC will replace with the second terminal media resource of SBC application from the 5th media information of second terminal, the 6th signaling of the 6th media information is carried in generation, and transmission is carried the 6th signaling of the 6th media information to Softswitch; Softswitch receives from the 6th signaling SBC, that carry the 6th media information, after the 6th media information carries out attribute change processing in to the 6th signaling, the 7th signaling of the 7th media information is carried in generation, sends and carries the 7th signaling of the 7th media information to SBC; SBC receives from the 7th signaling Softswitch, that carry the 7th media information.
In addition, first terminal and second terminal the same side network environment under same SBC.First terminal and second terminal transmit signaling by SBC, and, the direct intercommunication of medium of first terminal and second terminal.
Particularly, Fig. 6 is based on the key diagram of the calling networking diagram under the hairpin pattern of the embodiment of the invention, in Fig. 6, the calling of two terminals under the SBC that coexists is shown.
Fig. 7 is based on the flow chart of the calling under the hairpin pattern of the embodiment of the invention, as shown in Figure 7, may further comprise the steps based on the flow process of the calling under the hairpin pattern of the embodiment of the invention:
Step 1: caller (first terminal) makes a call, the SDP of caller describes (mainly comprising media address and port) on the signaling band, related media resource (a pair of media port in the interior outside of SBC application caller, be used for carrying out continuing of medium), the MP module is finished the foundation that the caller part of media is transmitted according to this;
IP and port were replaced during step 2:SBC described caller SDP, and medium IP and the port revised during caller SDP1 describes in the signaling are the related content that SBC goes up the resource of application, and the signaling that will revise simultaneously after SDP describes is issued Softswitch;
Step 3: after Softswitch carries out the attribute processing to this signaling, send back to SBC, SBC receives signaling (containing the amended caller SDP (SBC1) by SBC), the related resource (a pair of media port in the interior outside) of SBC application called (second terminal) is finished the foundation that called medium are transmitted;
Step 4:SBC finds that IP and the PORT of original SDP in SBC1 is IP and the PORT that SBC oneself is applied for, then conclude caller and called under same SBC, therefore obtain the IP and the PORT of caller, the medium IP and the PORT that replace among this SDP are the relevant information of original IP of caller and PORT, issue amended signaling (containing the initial SDP information of caller) called then;
Step 5: so far, called media address and the port that obtains caller, actual is the direct address of caller, wherein, called medium are transmitted as shown in table 3:
Table 3:
| IP sbc1、PORT sbc1 |
| IP ext2、PORT ext2 |
| IP int2、PORT int2 |
| IP 2、PORT 2 |
The medium that can find this moment transmit with prior art in medium in the normal flow to transmit be the same (that is, table 3 is identical with table 1), that still obtain owing to terminal is the IP and the PORT of the other side's direct medium, so do not have any medium on the SBC.
Step 6: calledly return response, describe SDP2 with the SDP that goes up oneself;
Step 7:SBC also can come the information of SDP2 is made amendment according to the relevant information of the resource of new application, and 2 to 5 make amendment to the information of SDP2 as the step, send to caller again;
Step 8: called address and port have just been known in caller like this, and reality also is called direct address and port, and the medium of caller are transmitted as shown in table 4:
Table 4:
| IP sbc2、PORT sbc2 |
| IP ext1、PORT ext1 |
| IP int1、PORT int1 |
| IP 1、PORT 1 |
Can table of discovery 4 consistent with table 1, but because terminal obtains is the IP and the PORT of the other side's direct medium, so do not have any medium on the SBC.
Step 9: this moment, calling and called were all known the other side's address and port, and media channel is set up.
Can see that more than for two terminals under the SBC that coexists, under the hairpi pattern, the signaling of terminal is through SBC, medium are direct intercommunications, make that SBC is a Xin Lingdaili, have reduced the spending that medium are transmitted, and have improved performance.
Below, with reference to Figure 12 to Hairpin can with the networking situation describe.
At present the scheme of hairpin do not support multipole NAT or approximate multi-level NAT () situation for example, multistage SBC so get rid of above several classes, as shown in Figure 8, shows the networking mode relatively more commonly used that can be used for hairpin at present:
Networking mode one: the calling under the NAT between the user
Method one, UE-1, UE-2 link to each other by same NAT device with SBC is middle, and both call out;
Method two, two terminals are connected on respectively under two different NAT device, and calling and called are called out each other, call out UE-3 as UE-1 (perhaps UE-2).
Two user's direct callings under networking mode two: the SBC
UE-4, UE-5 directly link to each other with SBC, middle no NAT device, and both call out.
User under networking mode three: the SBC strides NAT device and calls out
UE-3 is connected to SBC by a NAT, and UE-4 directly links to each other with SBC, and two terminals calling and called are each other called out.
Below, the judgment principle of Hairpin is described.
For a major premise that realizes hairpin then is that two terminals are the users under the SBC, and this is one and satisfies this condition because have only at all, might illustrate that just two terminals are in same net.For the user under the same SBC, can further realize the principle of hairpin, judge that promptly hairpin's is tactful as described below:
SBC can distribute Id number an of hairpin to the terminal that inserts by SBC, and this Id number distribution is to decide according to different networkings, for shown in Figure 8 three can the networking of hairpin in:
Networking one: under the NAT that coexists.In this case, all can distribute identical hairpin when registering for the user under the inferior NAT Id number, making can hairpin between the user under this NAT.
Networking two: simultaneously directly under a SBC.Directly Id number of an identical hairpin of distribution, make that these terminals can hairpin.
Networking three: the terminal under different NAT.Owing to disposed a nat pool on the SBC equipment, a plurality of NAT can be divided into one group, identify with a NAT Id, when registering from the user under the different N AT, can come to distribute Id number of hairpin according to NAT Id, guarantee that the user of (NAT Id is identical) under the same group of NAT can hairpin to these users.
In sum, adopt the present invention,, open the hairpin function, reduce medium and handle the expense of bringing, improved the performance of SBC to a certain extent for the user in the network environment that belongs to the same side under the same SBC.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a method that leads directly to by Session Border Controller SBC realization medium is characterized in that, comprising:
Step 1, first terminal is sent calling, and send first signaling of carrying first media information to described SBC, described SBC is converted to second signaling and second media information after described first signaling and described first media information are handled, and send described second signaling carry described second media information to Softswitch, after described Softswitch carries out attribute change processing to described second medium that carry in described second signaling, the 3rd signaling of the 3rd media information is carried in generation, and described the 3rd signaling that will carry described the 3rd media information sends back to described SBC;
Step 2, described SBC is under the identical situation of the media resource of finding to apply for from described the 3rd media information and described SBC self of described Softswitch, judge that described first terminal and second terminal are under same described SBC, and the content of described the 3rd media information replaced with the content of original described first media information of described first terminal, described then SBC sends and carries the 4th signaling of fourth media information to described second terminal;
Step 3, described second terminal receive described the 4th signaling of carrying described fourth media information, and described second terminal is sent response, and the 5th signaling of carrying the 5th media information is sent to described SBC;
Step 4, described SBC is converted to the 6th signaling of carrying the 6th media information after described the 5th signaling described second terminal, that carry described the 5th media information is handled, and send described the 6th signaling of carrying described the 6th media information to described Softswitch, after described Softswitch carries out attribute change processing to the 6th media information that carries in described the 6th signaling, the 7th signaling of the 7th media information is carried in generation, and described the 7th signaling that will carry described the 7th media information sends back to described SBC;
Step 5, described SBC is under the identical situation of the media resource of finding to apply for from described the 7th medium and described SBC self of described Softswitch, judge that described first terminal and described second terminal are under same described SBC, and described the 7th media information of described second terminal replaced with original described the 5th media information of described second terminal, described then SBC sends and carries the 8th signaling of the 8th media information to described first terminal;
Step 6, described first terminal receive from described the 8th signaling described SBC, that carry described the 8th media information;
Step 7, described first terminal and described second terminal are set up media channel by described the 8th media information and the described fourth media information that receive.
2. method according to claim 1 is characterized in that, comprises in described step 1:
Described first terminal to described SBC send carry described first signaling of described first media information after, described SBC applies for the described first terminal media resource, and is transmitted by the medium that the Media proxy MP of described SBC sets up described first terminal;
Described SBC will replace with the described first terminal media resource that described SBC applies for from described first media information of described first terminal, described second signaling of described second media information is carried in generation, and transmission is carried described second signaling of described second media information to described Softswitch;
Described Softswitch receives from described second signaling described SBC, that carry described second media information, after described second medium that carry in to described second signaling carry out attribute change processing, described the 3rd signaling of described the 3rd media information is carried in generation, and transmission is carried described the 3rd signaling of described the 3rd media information to described SBC;
Described SBC receives from described the 3rd signaling described Softswitch, that carry described the 3rd media information, and applies for the described second terminal media resource, and the medium that the described MP module of described SBC is set up described second terminal are transmitted.
3. method according to claim 2 is characterized in that, comprises in described step 4:
Described SBC will replace with the described second terminal media resource of described SBC application from described the 5th media information of described second terminal, described the 6th signaling of described the 6th media information is carried in generation, and transmission is carried described the 6th signaling of described the 6th media information to described Softswitch;
Described Softswitch receives from described the 6th signaling described SBC, that carry described the 6th media information, after the 6th media information described in described the 6th signaling being carried out attribute change processing, described the 7th signaling of described the 7th media information is carried in generation, sends and carries described the 7th signaling of described the 7th media information to described SBC;
Described SBC receives from described the 7th signaling described Softswitch, that carry described the 7th media information.
4. according to each described method in the claim 1 to 3, it is characterized in that,
Described first terminal and the same side network environment of described second terminal under same SBC.
5. according to each described method in the claim 1 to 3, it is characterized in that,
Described first terminal and described second terminal transmit signaling by described SBC, and, the direct intercommunication of medium of described first terminal and described second terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101817382A CN101420368B (en) | 2007-10-23 | 2007-10-23 | Method for implementing media hairpin by SBC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101817382A CN101420368B (en) | 2007-10-23 | 2007-10-23 | Method for implementing media hairpin by SBC |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101420368A CN101420368A (en) | 2009-04-29 |
| CN101420368B true CN101420368B (en) | 2011-07-13 |
Family
ID=40630984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101817382A Expired - Fee Related CN101420368B (en) | 2007-10-23 | 2007-10-23 | Method for implementing media hairpin by SBC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101420368B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998516B (en) * | 2009-08-27 | 2014-03-12 | 中兴通讯股份有限公司 | High-capacity SBC and implementation method thereof |
| CN102075493A (en) * | 2009-11-20 | 2011-05-25 | 中兴通讯股份有限公司 | Method and system for establishing media session |
| CN103634193A (en) * | 2012-08-24 | 2014-03-12 | 中兴通讯股份有限公司 | Pure circuit switching realizing method and device |
| CN104052675A (en) * | 2013-03-13 | 2014-09-17 | 中国移动通信集团公司 | Method, system, SBC and AS for realizing SBC overload control |
| CN105262744B (en) * | 2015-10-10 | 2018-06-01 | 北京佳讯飞鸿电气股份有限公司 | A kind of method that media port multiplexing is realized in multimedia dispatching system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1856163A (en) * | 2005-04-27 | 2006-11-01 | 华为技术有限公司 | Communication system with dialog board controller and its command transmitting method |
| CN1870689A (en) * | 2006-01-09 | 2006-11-29 | 华为技术有限公司 | Implement method and system for double-home of session boundary controller |
-
2007
- 2007-10-23 CN CN2007101817382A patent/CN101420368B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1856163A (en) * | 2005-04-27 | 2006-11-01 | 华为技术有限公司 | Communication system with dialog board controller and its command transmitting method |
| CN1870689A (en) * | 2006-01-09 | 2006-11-29 | 华为技术有限公司 | Implement method and system for double-home of session boundary controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101420368A (en) | 2009-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103430524B (en) | A backup sip server for the survivability of an enterprise network using sip | |
| CN101420368B (en) | Method for implementing media hairpin by SBC | |
| CN101547263B (en) | Telecom value-added service server based on XML script and realizing method thereof | |
| CN102035813B (en) | The implementation method of end-to-end calling, end-to-end calling terminal and system | |
| CN104580119B (en) | Voice and video telephone method, apparatus and system | |
| CN109889534B (en) | VoIP (Voice over Internet protocol) communication method fusing IP (Internet protocol) network and LTE (Long term evolution) network | |
| CN106101087B (en) | A method of media proxy is realized based on linux kernel | |
| CN100382544C (en) | Method for realizing transform of conventional telephone exchange network to younger generation network and transient network | |
| CN102271137B (en) | A kind of media server | |
| JP2011188320A (en) | Method of transferring session between gateway and sip server, management apparatus, and program | |
| CN101742008A (en) | Media stream proxy method, voice exchanger and communication system | |
| CN104113537B (en) | A kind of system and method for supporting that the PBX equipment by the different agreement interface type based on TDM circuit is linked into IMS network | |
| CN100407711C (en) | System for realizing proxy in network and its method | |
| WO2013082894A1 (en) | Operator call forwarding method and switchboard service application server | |
| CN100596093C (en) | Implementing method of intelligent media flow bypass | |
| CN101227530B (en) | Method and apparatus of resource backup | |
| CN101998516B (en) | High-capacity SBC and implementation method thereof | |
| CN106921615A (en) | System, method and the mobile terminal of fixed network number communication are realized in the terminal | |
| CN1825822B (en) | Method and system control for setting up an IP telephony connection | |
| CN204408459U (en) | Based on the Small campus communication network framework of soft switch | |
| CN101998002A (en) | Three-network integration transitional voice communication method and three-network integration transitional signalling system | |
| CN104683613A (en) | Soft switch-based small campus telecommunication network architecture | |
| CN1926807A (en) | Medium control method for realizing legal monitoring using soft exchanging system | |
| CN101258717A (en) | Medium gateway system and method for realizing medium gateway internal call | |
| Pengyu et al. | An Advanced Commercial Contact Center Based on Cloud Computing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 Termination date: 20171023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |