CN1622581A - Call processing method in next generation network - Google Patents
Call processing method in next generation network Download PDFInfo
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- CN1622581A CN1622581A CN 200310120017 CN200310120017A CN1622581A CN 1622581 A CN1622581 A CN 1622581A CN 200310120017 CN200310120017 CN 200310120017 CN 200310120017 A CN200310120017 A CN 200310120017A CN 1622581 A CN1622581 A CN 1622581A
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Abstract
The call processing method for the next generation of network has expanded local connection options in medium gateway control protocol and increased call type parameter to the local connection options. When the medium gateway detects the call service, it informs the medium gateway controller, the medium gateway controller issues connection amending command with the said call type parameter and requires the medium gateway to perform coding/decoding switching. The medium gateway regulates corresponding DSP parameters based on the call type parameter to suit different service transmission. The call type parameter as one expanded parameter has no influence on service and causes no malfunction of the gateway. The present invention makes it possible for the medium gateway to use G.711 coding/decoding service to regulate DSP parameter for different service and this raises the transmission quality.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the method for carrying out call treatment in a kind of next generation network (NGN).
Background technology
Next generation network (NGN) is development constantly, and the call business that carries out in the NGN network as facsimile service and MODEM business (being dialing access service), has following dual mode to realize:
A kind of is the transparent transmission mode, as shown in Figure 1, adopt Media Gateway Control Protocol communication between Media Gateway Controller (MGC) and the media gateway (MG), Media Gateway Controller is responsible for the call state relevant with media gateway controlled, and media gateway is finished the conversion of media formats between the heterogeneous networks under the control of Media Gateway Controller.A facsimile machine is connected respectively on the media gateway (MG), in IP network, use G.711 encoding and decoding, G.711 be PCM (pulse code modulation) encoding and decoding standard that voice is carried out 64kbit/s, adopt the transparent transmission mode, the code stream information of narrowband side remained untouched to be packaged in the IP message, is transmitting on the internet by real-time transport protocol (rtp).Before beginning fax, carry out facsimile negotiation between two facsimile machines, adopt identical encoding/decoding mode.
G.711 be the transparent transmission mode, the encoding and decoding package on TDM (time division multiplexing) circuit in the IP bag, is not made amendment, therefore go for all business.This transparent transmission mode is equally applicable to the MODEM business, owing to be encoding and decoding speech G.711, under the normal talking situation, also can use this code encoding/decoding mode, media gateway need be known current common speech business or fax or the MODEM business of G.711 being used for, so that adjust the parameter (as adjusting parameters such as gain, trill buffering Jitter buffer) of DSP (digital signal processor), adapting to different business, thereby improve transmission quality.
Also having a kind of is mode T.38, T.38 agreement is the Real-Time IP facsimile transmission standard that ITU-T (International Telecommunication Association) introduces, T.38 defined the process of IP network part terminal room fasystem transmission in the agreement, after facsimile signal was at first passed through the modulation of voice/fax gateway, the form with the Fax over IP bag in IP network transmitted by TCP (transmission control protocol) or UDP (User Datagram Protoco (UDP)).As shown in Figure 2, media gateway (MG) parses signal of consulting between facsimile machine and data-signal, convert T.38 message to, transmitting by real-time transport protocol (rtp) on the internet, T.38 the media gateway of the other end from restoring original facsimile negotiation signal and data-signal the message.
When adopting T.38 mode, imply to show it is facsimile service (FAX), and when adopting G.711 mode, media gateway need be adjusted some parameters of gateway DSP according to type of call (as fax, data, text or voice), so that the raising transmission quality, but there is not suitable parameter to be used to transmit this information in the MGCP agreement at present.
Prior art can (these 3 kinds of business of voice, fax and MODEM be distinguished in the combination of SS parameter by the echo canceller in the MGCP agreement (EC) and silence detection.Whether EC parameter indication gateway opens echo inhibit feature (Echo Control) in the MGCP agreement, and whether SS parameter indication gateway opens silence detection function (Silence Suppression).As shown in the table
| ????EC/SS | ????SS＝ON | ????SS＝OFF |
| ????EC＝ON | Fax | Voice |
| ????EC＝OFF | Voice | ????MODEM |
Such scheme has been used EC and SS parameter, when EC and SS are ON, is facsimile service; When one of EC, SS are ON, one when being OFF, be speech business; When EC and SS are OFF, be the MODEM business.
This scheme can be distinguished type of call, but needs to utilize EC and these two parameters of SS, thereby makes these two parameters lose original meaning, makes the gateway misoperation easily.
Summary of the invention
Technical problem to be solved by this invention is: overcome existing fax and dial up on the telephone in utilize EC and these two parameters of SS to come the business transferring type to be brought gateway easily produce the deficiency of misoperation, the method of carrying out call treatment in a kind of NGN network is provided, thereby the elimination misoperation improves quality of service.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
Carry out the method for call treatment in this next generation network, may further comprise the steps:
The MGCP local connection option is expanded, in local connection option, increased call type parameter;
When media gateway detects call business and begins, the notice Media Gateway Controller, Media Gateway Controller issues the modification bind command, requires media gateway to carry out encoding and decoding and switches, and carries the call type parameter of the above in revising bind command;
Media gateway is carried out digital signal corresponding processor (DSP) parameter adjustment according to described call type parameter, adapts to different business and transmits.
When described media gateway is carried out the encoding and decoding switching, switch to G.711 encoding and decoding.
Described call type parameter comprises fax and dialing access service type parameter.
Described call type parameter also further comprises the text services type parameter.
Beneficial effect of the present invention is: the present invention is by expanding MGCP agreement local connection option, increase a type of call (as X-calltype) parameter, in order to distinguish type of call, because the parameter that is increased is a spreading parameter, thereby do not influence business, can not make gateway form misoperation, and, can not influence its common conversation yet for the media gateway of not supporting to expand.Utilize the present invention, do not transmitting type of call under the traffic affecting situation, make media gateway can use the business of G.711 encoding and decoding clearly, correctly adjust the DSP parameter, adapt to different business, thereby improved transmission quality.
Description of drawings
Fig. 1 realizes schematic diagram for the fax that adopts the transparent transmission mode;
Fig. 2 adopts the T.38 fax realization schematic diagram of mode;
Fig. 3 is fax of the present invention or dialing access service realization flow figure.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
The present invention transmits type of call by expansion MGCP agreement, makes media gateway can clearly use the business of G.711 encoding and decoding, and correct adjustment DSP parameter improves quality of service.
The present invention expands MGCP agreement local connection option, and local connection option is used to specify the attribute of connection in the MGCP agreement, such as the pattern that connects (sendonly, receiveonly, sendreceive, conference...).Increase an X-calltype (type of call) parameter in local connection option, this parameter value is as follows:
Fax (Fax)-----001
Data (Data)-----002
Text (Text)-----003
Fax represents facsimile service, Data representative data business, Text represents text services, compare with Data (data) business, the text encoding and decoding that the Text business can only be used to specify (such as the ASCII character text), network is with intact transmission data, and for the Text business in the Data business, network can be made amendment according to the characteristics of text, with conserve bandwidth etc.
When media gateway (MG) detects fax or non-voice call business such as MODEM business and begins, Media Gateway Controller (MGC) will issue MDCX (revise and connect) order, require MG to switch to G.711 encoding and decoding, in MDCX message, carry the X-calltype parameter simultaneously.
As shown in Figure 3, flow process is as follows:
1, after both sides' voice call, if when media gateway (MG) detects the professional beginning of fax or MODEM, send NTFY (notice) to MGC, MGC returns and responds success message 200.
2, MGC issues MDCX (revise and connect) order to two ends media gateway (MG1, MG2) simultaneously, requires to carry the X-calltype parameter simultaneously in MDCX message.MG1 and MG2 carry out corresponding D SP parameter adjustment according to the X-calltype in the MDCX message, to adapt to different business, improve quality of service.
3, after two ends MG returned handover success message 200, both sides began fax or send data.
Because MGCP agreement regulation X-is used for expansion, does not influence intercommunication,, do not influence common conversation therefore to not supporting the media gateway of this expansion.
Such as, the X-calltype that carries in the MDCX message is 001, then MG knows it is facsimile service; If X-calltype is 002, then MG knows it is the Modem business; If the X-calltype that carries in the MDCX message is 003, then MG knows it is text services.
Certainly professional type is not limited to above three kinds of situations, is the embodiment that the present invention uses more than, has other non-voice service in addition, utilizes the present invention can realize the identification of these types of service equally.
Like this, the present invention is by expanding MGCP agreement local connection option, increase an X-calltype parameter, in order to distinguish type of call, because the parameter that is increased is a spreading parameter, thereby does not influence business, can not make gateway form misoperation, and, can not influence its common conversation for the media gateway of not supporting to expand yet.
Claims (4)
1, carry out the method for call treatment in a kind of next generation network, it is characterized in that, may further comprise the steps:
The MGCP local connection option is expanded, in local connection option, increased call type parameter;
When media gateway detects call business and begins, the notice Media Gateway Controller, Media Gateway Controller issues the modification bind command, requires media gateway to carry out encoding and decoding and switches, and carries the call type parameter of the above in revising bind command;
Media gateway is carried out digital signal corresponding processor (DSP) parameter adjustment according to described call type parameter, adapts to different business and transmits.
2, carry out the method for call treatment in the next generation network according to claim 1, it is characterized in that: when described media gateway is carried out the encoding and decoding switching, switch to G.711 encoding and decoding.
3, carry out the method for call treatment in the next generation network according to claim 1 and 2, it is characterized in that: described call type parameter comprises fax and dialing access service type parameter.
4, carry out the method for call treatment in the next generation network according to claim 3, it is characterized in that: described call type parameter also further comprises the text services type parameter.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2003101200172A CN100471218C (en) | 2003-11-28 | 2003-11-28 | Call processing method in next generation network |
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| CNB2003101200172A CN100471218C (en) | 2003-11-28 | 2003-11-28 | Call processing method in next generation network |
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| CN100471218C CN100471218C (en) | 2009-03-18 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007022681A1 (en) * | 2005-08-26 | 2007-03-01 | Huawei Technologies Co., Ltd. | A method for ip-based service transmission |
| WO2007073666A1 (en) * | 2005-12-26 | 2007-07-05 | Huawei Technologies Co., Ltd. | Method and apparatus for counting parameter to adjust value |
| WO2007109977A1 (en) * | 2006-03-24 | 2007-10-04 | Huawei Technologies Co., Ltd. | A method and device and packet network for determining type of service |
| WO2008003262A1 (en) * | 2006-06-27 | 2008-01-10 | Huawei Technologies Co., Ltd. | A media gateway and packet-filtering method thereof |
| CN100407871C (en) * | 2005-11-26 | 2008-07-30 | 华为技术有限公司 | Call processing method and system for radio local loop user in next generation network |
| CN100589515C (en) * | 2005-06-20 | 2010-02-10 | 中兴通讯股份有限公司 | Method for carrying out initialization on communication terminal |
| WO2010054577A1 (en) * | 2008-11-11 | 2010-05-20 | 华为终端有限公司 | Method, equipment and system for carrying the point of sale (pos) data service over the ip network |
| CN101031006B (en) * | 2006-03-03 | 2010-08-25 | 华为技术有限公司 | Sink-bureau multi-service transmitting method based on IP |
| WO2011106940A1 (en) * | 2010-03-05 | 2011-09-09 | Huawei Technologies Co., Ltd. | Network entity and method for providing a user entity-based service in a communication network |
| WO2011144118A2 (en) * | 2011-05-28 | 2011-11-24 | 华为技术有限公司 | Method and apparatus for performing bankcard businesses |
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2003
- 2003-11-28 CN CNB2003101200172A patent/CN100471218C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100589515C (en) * | 2005-06-20 | 2010-02-10 | 中兴通讯股份有限公司 | Method for carrying out initialization on communication terminal |
| CN101160919B (en) * | 2005-08-26 | 2012-09-19 | 华为技术有限公司 | Method for IP-based service transmission |
| WO2007022681A1 (en) * | 2005-08-26 | 2007-03-01 | Huawei Technologies Co., Ltd. | A method for ip-based service transmission |
| CN1921478B (en) * | 2005-08-26 | 2011-09-14 | 华为技术有限公司 | Business signal transmitting method based on network agreement |
| CN100407871C (en) * | 2005-11-26 | 2008-07-30 | 华为技术有限公司 | Call processing method and system for radio local loop user in next generation network |
| US8116328B2 (en) | 2005-12-26 | 2012-02-14 | Huawei Technologies Co., Ltd. | Method and apparatus for adjusting value of statistic parameter |
| WO2007073666A1 (en) * | 2005-12-26 | 2007-07-05 | Huawei Technologies Co., Ltd. | Method and apparatus for counting parameter to adjust value |
| CN101031006B (en) * | 2006-03-03 | 2010-08-25 | 华为技术有限公司 | Sink-bureau multi-service transmitting method based on IP |
| WO2007109977A1 (en) * | 2006-03-24 | 2007-10-04 | Huawei Technologies Co., Ltd. | A method and device and packet network for determining type of service |
| US7969875B2 (en) | 2006-06-27 | 2011-06-28 | Huawei Technologies Co., Ltd | Media gateway and packet filtering method thereof |
| WO2008003262A1 (en) * | 2006-06-27 | 2008-01-10 | Huawei Technologies Co., Ltd. | A media gateway and packet-filtering method thereof |
| CN101741993B (en) * | 2008-11-11 | 2013-01-02 | 华为终端有限公司 | Method, equipment and system for carrying data service of point of sale (POS)terminal by IP network |
| WO2010054577A1 (en) * | 2008-11-11 | 2010-05-20 | 华为终端有限公司 | Method, equipment and system for carrying the point of sale (pos) data service over the ip network |
| US8600818B2 (en) | 2008-11-11 | 2013-12-03 | Huawei Device Co., Ltd. | Method, device, and system for carrying point of sale data service over internet protocol network |
| WO2011106940A1 (en) * | 2010-03-05 | 2011-09-09 | Huawei Technologies Co., Ltd. | Network entity and method for providing a user entity-based service in a communication network |
| WO2011144118A2 (en) * | 2011-05-28 | 2011-11-24 | 华为技术有限公司 | Method and apparatus for performing bankcard businesses |
| WO2011144118A3 (en) * | 2011-05-28 | 2012-05-03 | 华为技术有限公司 | Method and apparatus for performing bankcard businesses |
| CN102906795A (en) * | 2011-05-28 | 2013-01-30 | 华为技术有限公司 | Method and apparatus for performing bankcard businesses |
| CN102906795B (en) * | 2011-05-28 | 2014-12-24 | 华为技术有限公司 | Method and apparatus for performing bankcard businesses |
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| CN100471218C (en) | 2009-03-18 |
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Granted publication date: 20090318 |