CN101166214B - Method for media gateway to process session service of IP network carrier voice unit - Google Patents
Method for media gateway to process session service of IP network carrier voice unit Download PDFInfo
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- CN101166214B CN101166214B CN2006100632280A CN200610063228A CN101166214B CN 101166214 B CN101166214 B CN 101166214B CN 2006100632280 A CN2006100632280 A CN 2006100632280A CN 200610063228 A CN200610063228 A CN 200610063228A CN 101166214 B CN101166214 B CN 101166214B
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Abstract
The invention discloses method that media gateway uses Voice over IP (VOIP) unit to process conversation service. VOIP DSP chip is adopted in VOIP unit. Two kinds of chip are designed: VOIP sub unit in non-full ability class in use for treating the call control command (CCC) of using G.711 coding and decoding mode, and VOIP sub unit in full ability class in use for treating CCC of using not G.711coding and decoding scheme. The method includes following process steps: (1) media gateway receives CCC of media gateway controller; (2) based on CCC received, media gateway determines whether CCC uses G.711 coding and decoding mode; if yes, then the method selects VOIP sub unit in non-full ability class to establish conversation; otherwise, selecting VOIP sub unit in full ability class to accomplish conversation. Taking full advantage of processing power of VOIP DSP chip, the invention raises total capacity of VOIP channel in media gateway system.
Description
Technical field
The present invention relates to communication field, relate in particular to the method that a kind of media gateway in the communication field is utilized VOIP (Voiceover IP, IP network voice-bearer) cell processing session service.
Background technology
In big capacity and high density VOIP media gateway, the VOIP scheme generally adopts the VOIP dsp chip.Multiple encoding and decoding can be supported, G.729, G.723, T.38 be waited to these chips G.711, because the complexity of various code decode algorithms is unequal with the resource that needs to consume, the port number of the various encoding and decoding maximums that the VOIP dsp chip can be supported is also just inconsistent.Such as, T.38 to compare G.711, algorithm is more complicated, needs the resource of consumption also more, and dsp chip supports the largest passages of G.711 encoding and decoding to count N1, and the largest passages number of supporting T.38 encoding and decoding is N2, and N1 will be much larger than N2 so.Provide the design of various codec functions for needs, dsp chip will be supported various encoding and decoding simultaneously, and the dsp chip VOIP channel capacity of design just can only be its most complicated, the largest passages number of the encoding and decoding in expensive source that can support.Therefore, traditional method all adopts the passage number of the worst situation N2 as all unit supports for chip.Owing in the actual environment, have a lot of session meetings to use the G.711 very low code decode algorithm of this class encoder complexity, so the ability of the actual support passage of VOIP is greater than predefined passage tenability N2.Especially under G.711 situation was all adopted in whole sessions, the physical channel tenability of unit reached N1, can only reach N2 and set tenability.Wherein the channel capacity of (N1-N2) just is not fully used.Although the chip disposal ability of DSP can also be handled other G.711 encoding and decoding session again, but because the restriction of design capacity, new G.711 calling must take other VOIP dsp chip, and the disposal ability of every VOIP dsp chip is not fully used like this.Simultaneously, the encoding and decoding largest passages number the most complicated, the most expensive source that the VOIP dsp chip can be supported has also limited media gateway system VOIP passage total capacity, becomes the shortest short slab in the Law of Barrel.
Summary of the invention
The technical problem to be solved in the present invention provides the disposal ability that can make full use of the VOIP dsp chip in a kind of communication system, and the media gateway that improves media gateway system VOIP passage total capacity is utilized the method for VOIP cell processing session service.
The technical solution adopted for the present invention to solve the technical problems is:
Media gateway is utilized the method for VOIP cell processing session service, described VOIP unit adopts the VOIP dsp chip, described chip design becomes to be used to handle the non-full ability level VOIP subelement of the calling control command of using G.711 encoding and decoding and is used to handle the full ability level VOIP subelement of the calling control command of using non-G.711 encoding and decoding, and described method comprises following treatment step:
The calling control command of A, media gateway receiving media gateway controller;
B, media gateway judge according to the calling control command that receives whether call out control command uses G.711 code encoding/decoding mode; If, then select the non-full ability level VOIP subelement in the VOIP media gateway to set up session, otherwise, select the full ability level VOIP subelement in the media gateway to finish session.
Further, the VOIP subelement in the media gateway is set up after the session, if the VOIP passage detects the fax incident in conversation procedure, then carries out facsimile service and handles, and described facsimile service treatment step comprises:
Judge at first whether described facsimile service processing controlled by Media Gateway Controller:
If, the media gateway reporting events Media Gateway Controller of will faxing, and get back to steps A;
Otherwise, media gateway sends the fax incident with announcement session the other side switching of faxing by described VOIP passage, the incident of will faxing again directly reports the call business module of media gateway, if the VOIP passage in the current sessions is on non-full ability level subelement, then the call business module of described media gateway is closed described VOIP passage, and the passage of reselecting on the full ability level subelement is finished facsimile service; Otherwise, directly use described VOIP passage to finish facsimile service.
In the above technical scheme, G.729 described non-G.711 encoding and decoding comprise, G.723, T.38 wherein at least a encoding and decoding.
Beneficial effect of the present invention mainly shows: VOIP of the present invention unit comprises non-full ability level VOIP subelement and full ability level VOIP subelement, be respectively applied for the calling control command of handle using G.711 with non-G.711 encoding and decoding, thereby utilize this VOIP cell processing session service can make full use of the disposal ability of VOIP dsp chip, greatly improved the total capacity of media gateway system VOIP passage, reduced the VOIP resources costs, and don't the system that influences provides the ability of various codec functions.
Description of drawings
Fig. 1 is the flow chart of described session service processing method one embodiment of the present invention.
Embodiment
Fig. 1 is the flow chart of a kind of specific embodiment of session service processing method of the present invention.
1, MG (media gateway, media gateway) receives MGC (media gateway controller, Media Gateway Controller) control, and MGC issues the calling control command to MG;
2, MG is according to calling out the control command parameter, and judge whether to use G.711 encoding and decoding: if G.711 encoding and decoding are used in session, MG selects for use the VOIP passage on the non-full ability level unit to finish session; Other encoding and decoding outside if G.711 session is used, MG selects for use the VOIP passage on the full ability level subelement to finish session.
3, the VOIP passage detects the incident of T.38 faxing on the non-full ability level subelement in session, judge whether current fax controlled by MGC: if controlled by MGC, to MGC, later fax handling process is controlled by MGC, gets back to step 1 with the fax detection reporting events.
4, if current facsimile service is not controlled by MGC, be the auto-negotiation fax, send the fax detection incident by the VOIP passage earlier, announcement session the other side's switching of faxing; Again the fax tone detection incident is directly reported the call business module of MG.
5, if current sessions in the VOIP passage on non-full ability level subelement, MG call business module is closed the current non-full ability level subelement VOIP passage that takies, reselect VOIP passage on the full ability level subelement, according to identical session parameter (IP address, port numbers etc.) operating walk way, finish T.38 facsimile service with the other side VOIP lane negotiation will, passage switches does not need MGC to participate in, and MG finishes inside.
6, if the VOIP passage in the current sessions on full ability level subelement, does not then need switching channel, directly use current VOIP passage to finish T.38 facsimile service.
G.729 described non-G.711 encoding and decoding comprise, G.723, T.38 wherein at least a encoding and decoding, the situation that adopts other code encoding/decoding mode is also in the scope that the present invention includes.
Claims (1)
1. media gateway is utilized the method for IP network voice-bearer cell processing session service, described IP network voice-bearer unit adopts IP network voice-bearer digital signal processing chip, it is characterized in that, described chip design becomes to be used to handle the non-full ability level IP network voice-bearer subelement of the calling control command of using G.711 encoding and decoding and is used to handle full ability level IP network voice-bearer subelement two classes of the calling control command of using non-G.711 encoding and decoding, and described method comprises following treatment step:
The calling control command of A, media gateway receiving media gateway controller;
B, media gateway judge according to the calling control command that receives whether call out control command uses G.711 code encoding/decoding mode; If, then select the non-full ability level IP network voice-bearer subelement in the media gateway to set up session, otherwise, select the full ability level IP network voice-bearer subelement in the media gateway to finish session;
G.729 described non-G.711 encoding and decoding comprise, G.723, T.38 wherein at least a encoding and decoding;
IP network voice-bearer subelement in the media gateway is set up after the session, if IP network voice-bearer passage detects the fax incident in conversation procedure, then carries out facsimile service and handles, and described facsimile service treatment step comprises:
Judge at first whether described facsimile service processing controlled by Media Gateway Controller:
If, the media gateway reporting events Media Gateway Controller of will faxing, and get back to steps A;
Otherwise, media gateway sends the fax incident with announcement session the other side switching of faxing by described IP network voice-bearer passage, the incident of will faxing again directly reports the call business module of media gateway, if the IP network voice-bearer passage in the current sessions is on non-full ability level subelement, then the call business module of described media gateway is closed described IP network voice-bearer passage, reselect the passage on the full ability level subelement, finish facsimile service according to identical session parameter, the medium gateway internal that switches in of passage is finished; Otherwise, directly use described IP network voice-bearer passage to finish facsimile service.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100632280A CN101166214B (en) | 2006-10-19 | 2006-10-19 | Method for media gateway to process session service of IP network carrier voice unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100632280A CN101166214B (en) | 2006-10-19 | 2006-10-19 | Method for media gateway to process session service of IP network carrier voice unit |
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| CN101166214A CN101166214A (en) | 2008-04-23 |
| CN101166214B true CN101166214B (en) | 2010-12-08 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6363065B1 (en) * | 1999-11-10 | 2002-03-26 | Quintum Technologies, Inc. | okApparatus for a voice over IP (voIP) telephony gateway and methods for use therein |
| CN1527550A (en) * | 2003-03-06 | 2004-09-08 | 华为技术有限公司 | IP access method and system of phonetic service |
| CN1558613A (en) * | 2004-02-05 | 2004-12-29 | 中兴通讯股份有限公司 | Method for self-detecting speech coding/decoding channel conducting capability for media gateway equipment |
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- 2006-10-19 CN CN2006100632280A patent/CN101166214B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6363065B1 (en) * | 1999-11-10 | 2002-03-26 | Quintum Technologies, Inc. | okApparatus for a voice over IP (voIP) telephony gateway and methods for use therein |
| CN1527550A (en) * | 2003-03-06 | 2004-09-08 | 华为技术有限公司 | IP access method and system of phonetic service |
| CN1558613A (en) * | 2004-02-05 | 2004-12-29 | 中兴通讯股份有限公司 | Method for self-detecting speech coding/decoding channel conducting capability for media gateway equipment |
Non-Patent Citations (5)
| Title |
|---|
| 周刚.高性能DSP在VoP媒体网关中的应用.世界电子元器件 8.2005,(8),20,22,24,26. |
| 周刚.高性能DSP在VoP媒体网关中的应用.世界电子元器件 8.2005,(8),20,22,24,26. * |
| 陈楚华,史林.IP传真的分析与改进.计算机与信息技术 5.2006,(5),21-24. |
| 陈楚华,史林.IP传真的分析与改进.计算机与信息技术 5.2006,(5),21-24. * |
| 陈楚华.媒体网关中T38传真的设计与实现.西安电子科技大学硕士学位论文.2007,35-52. * |
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| CN101166214A (en) | 2008-04-23 |
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