CN103023899B - The method of a kind of VoIP system several data business support - Google Patents
The method of a kind of VoIP system several data business support Download PDFInfo
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- CN103023899B CN103023899B CN201210514768.1A CN201210514768A CN103023899B CN 103023899 B CN103023899 B CN 103023899B CN 201210514768 A CN201210514768 A CN 201210514768A CN 103023899 B CN103023899 B CN 103023899B
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Abstract
The invention provides the method for a kind of VoIP system several data business support, comprise the following steps: S1: terminal A, B enter talking state, gateway A, B inform mutually data service tenability simultaneously: adopt the call setup between terminal A and terminal B to be completed by gateway A and gateway B transfer in the present embodiment, gateway A, B in its process, the tenability of mutual data transmission business; S2: gateway B detects that terminal B sends data state signal, selects a kind of data mode to send handover request to gateway A; S3: when gateway A receives the data transaction negotiation information of gateway B, according to these information requirements, completes the conversion of corresponding data mode; S4: gateway B receives the handoff response of gateway A, and self completes switching.The present invention is applicable to several data business and is stored in the service supporting method in same VoIP system, enable communicating pair when needs supported data business, select concrete Data support mode according to both sides' ability, thus reach arbitrary data business can real-time selection support application requirement.
Description
Technical field
The present invention relates to telephonic communication system field, be specifically related to the method for VoIP system several data business support.
Background technology
Along with the development of VoIP communication system, its technology has become the main trend of current telephone communication system.But in traditional telephonic communication system, fairly perfect data service support, in VoIP communication network, is easy to go wrong, data service is mainly faxed, modem data service.
For solving the support of data service in VoIP communication network, progressively define the solution of several key.Its method mainly contains two kinds: T38 method, VBD method.
T38 method mainly utilizes gateway device, carries out modulation, the demodulation of facsimile data in PSTN side and VoIP side, makes fax carry out voip network transmission with data mode.T38 mode only supports G3 facsimile service.
VBD method is the speech conversion of carrying out carrying data in PSTN side and VoIP side, is that data are transmitted at voip network with voice mode.VBD mode can support that G3 faxes, high-speed facsimile and modem data transmission service.
In actual use, in order to select correct data transfer mode, the associated gateway equipment in voip network needs the transmission means of first negotiation data, i.e. aforesaid T38 and VBD.And concrete negotiation data mode also has difference, the sdp content to use in sip protocol:
Represent and use T38 mode, current G3 fax:
m=image 49170 udptl t38
Represent and use VBD mode, current G3 fax:
m=audio 8766 RTP/AVP 0
a=Fax
Represent and use VBD mode, current high-speed facsimile or modem business:
m=audio 8766 RTP/AVP 0
a=modem
In existing VoIP system, each gateway device needs oneself setting data transfer mode, all can only be completed in this way by all data services of this equipment.And all gateway devices in same voip network, identical setting need be had, to ensure that data service can use normal transmission.
But the business of client is often not limited to a kind of data service, now if desired various ways depositing, the mode more than needing equipment jointly to arrange just can not normally realize.
Summary of the invention
In view of this, be necessary the problem mentioned for background technology, provide a kind of and be applicable to several data business and be stored in the service supporting method in same VoIP system.
The object of the invention is to be achieved through the following technical solutions:
A method for VoIP system several data business support, described VoIP system comprises: data terminal A, B, and it is the source of data transmission service; Gateway A, B, it is the gateway device of VoIP; Gateway A is connected with data terminal A, and gateway B is connected with data terminal B; Be connected by voip network between gateway A and B;
The method comprises the following steps:
Step S1: terminal A, B enters talking state, and gateway A, B inform mutually data service tenability simultaneously;
Step S2: gateway B detects that terminal B sends data state signal, selects a kind of data mode to send handover request to gateway A;
Step S3: when gateway A receives the data transaction negotiation information of gateway B, according to these information requirements, completes the conversion of corresponding data mode;
Step S4: gateway B receives the handoff response of gateway A, and self completes switching.
Described data terminal A, B are actual can be modem, facsimile machine etc., and wherein two terminals are necessary for equipment of the same type, as being all modem, or are all facsimile machine.
Described data mode is T38 method or VBD method.
Described S1 comprises the following steps:
S1-1: gateway A receives the call request of terminal A to terminal B;
S1-2: gateway A sends described call request to gateway B, brings the data service tenability of gateway A into simultaneously;
S1-3: after gateway B receives the call information of gateway A, issues terminal B by described call request through access network, records the data service tenability of gateway A simultaneously;
After S1-4: terminal B off-hook, gateway B receives turn-on response from access network, and gateway B returns connection message to gateway A, brings the data service tenability of self into simultaneously;
S1-5: gateway A receives the turn-on response of gateway B, sends turn-on response to terminal A, records the data service tenability of gateway B simultaneously;
S1-6: the terminal A turn-on response receiving gateway A, enters the talking state between terminal A, B.
Relative to prior art, the invention has the advantages that:
The present invention utilizes existing soft and hardware resource on VoIP system voice gateway equipment, mainly Service control chip and integrated with software function wherein, by in voip signaling protocol, to data service mode and the ability of negotiation of opposite end transmission local terminal, enable communicating pair when needs supported data business, select concrete Data support mode according to both sides' ability, thus reach arbitrary data business can real-time selection support application requirement.
Accompanying drawing explanation
Fig. 1 is the hardware resource connection diagram of embodiment of the present invention several data service supporting method;
Fig. 2 is the flow chart of embodiment of the present invention multiple data service support method;
Fig. 3 is the idiographic flow schematic diagram of S1 in Fig. 2.
Embodiment
The present embodiment provides the method for a kind of VoIP system several data business support, as shown in Figure 1, data terminal A, B are the source of data transmission service, namely native system need complete the transfer of data required by terminal A, B, data terminal is actual can be modem, facsimile machine etc., and wherein two terminals are necessary for equipment of the same type, as being all modem, or be all facsimile machine; Gateway A, B are the gateway device of VoIP, and the connected mode of gateway and data terminal does not do requirement, both can directly be connected, and are also connected by other intermediate equipments; Gateway A is connected with data terminal A, and gateway B is connected with data terminal B; Be connected by voip network between gateway A and B, its connected mode does not do requirement, both can directly be connected, and is also connected by other intermediate equipments.
Perform the program of institute's supporting business in described gateway device, comprise the control procedure of the present embodiment method simultaneously;
Gateway device is by monitoring the media information by himself, and whether tell current is data service state, enters data mode, then carry out switching flow if find, ensures that self and peer gateway enter same data processing method simultaneously.
The method of the present embodiment comprises the following steps:
Step S1: terminal A, B enters talking state, gateway A, B inform mutually data service tenability simultaneously: adopt the call setup between terminal A and terminal B to be completed by gateway A and gateway B transfer in the present embodiment, gateway A, B in its process, the tenability of mutual data transmission business;
Step S2: gateway B detects that terminal B sends data state signal, a kind of data mode is selected to send handover request to gateway A: in the present embodiment, terminal B sends CED sound to terminal A, represent and need to proceed to data service, CED sound is through gateway B, detected by gateway B, thus gateway B knows and need carry out data service conversion, according to foregoing peer gateway capability for registration, gateway B selects a kind of data mode to send the negotiation of conversion to gateway A, in the present embodiment, gateway B selects T38 mode (m=image 49170 udptl t38) to issue the other side;
Step S3: the handover request of gateway A response gateway B, self completes switching: when receiving the data transaction negotiation information of gateway B, according to these information requirements simultaneously, completes the conversion of corresponding data mode; In the present embodiment, gateway A can control media processing chip, completes data processing ability: the realization of T38 mode; Meanwhile, gateway A is to gateway B response data conversion negotiation result, and in the present embodiment, gateway A is to gateway B echo message: m=image 49170 udptl t38, agrees T38 data mode;
Step S4: gateway B receives the handoff response of gateway A, and self completes switching: in the present embodiment, gateway echo message is T38 mode, and therefore, gateway B can control media processing chip, completes data processing ability: the realization of T38 mode.
Now, gateway A, B are completed the conversion of data mode, and the data mode of conversion is consistent.Be T38 mode in the present embodiment, the data channel of terminal A, B is got through, and freely can carry out transfer of data afterwards in its passage, gateway no longer changes its channel status.
Wherein, Fig. 3 represents the specific implementation process of step S1, and it comprises the following steps:
S1-1: terminal A sends the call request to terminal B by access network, as the dialing of terminal A off-hook, after access network collects number, sends call information to gateway A;
S1-2: after gateway A receives call information, converts call information to voip signaling, sends call information (adopting sip signaling in the present embodiment) to gateway B, will bring the data service tenability of local terminal gateway into simultaneously, and the present embodiment adopts field
a=datatypesupport: T38fax,VBDfax,VBDmodem
Represent the support of local terminal gateway, T38 mode G3 faxes, and VBD mode G3 faxes, VBD mode modem and high-speed facsimile ability;
S1-3: call request is issued terminal B through access network after receiving the call information of gateway A by gateway B, records the data service tenability of gateway A simultaneously;
S1-4: after terminal B off-hook, gateway B can receive connection message from access network.Gateway B returns connection message to gateway A, brings the data service tenability of self into simultaneously, and the present embodiment adopts field
a=datatypesupport: T38fax,VBDfax
Represent the support of local terminal gateway, T38 mode G3 faxes, and VBD mode G3 faxes;
S1-5: gateway A receives the turn-on response of gateway B, sends turn-on response to terminal A, records the data service tenability of gateway B simultaneously;
S1-6: the terminal A turn-on response receiving gateway A, enters the talking state between terminal A, B.
Claims (2)
1. a method for VoIP system several data business support, described VoIP system comprises: data terminal A, B, and it is the source of data transmission service; Gateway A, B, it is the gateway device of VoIP; Gateway A is connected with data terminal A, and gateway B is connected with data terminal B; Be connected by voip network between gateway A and B;
The method comprises the following steps:
S1: terminal A, B enters talking state, and gateway A, B inform mutually data service tenability simultaneously;
S2: gateway B detects that terminal B sends data state signal, selects a kind of data mode to send handover request to gateway A;
S3: when gateway A receives the data transaction negotiation information of gateway B, according to these information requirements, completes corresponding data mode and switches;
S4: gateway B receives the handoff response of gateway A, and self completes switching;
Described data mode is T38 method or VBD method;
Described data terminal A, B are the data terminal equipment of same kind;
Described S1 comprises the following steps:
S1-1: gateway A receives the call request of terminal A to terminal B;
S1-2: gateway A sends described call request to gateway B, brings the data service tenability of gateway A into simultaneously;
S1-3: after gateway B receives the call information of gateway A, issues terminal B by described call request through access network, records the data service tenability of gateway A simultaneously;
After S1-4: terminal B off-hook, gateway B receives turn-on response from access network, and gateway B returns connection message to gateway A, brings the data service tenability of self into simultaneously;
S1-5: gateway A receives the turn-on response of gateway B, sends turn-on response to terminal A, records the data service tenability of gateway B simultaneously;
S1-6: the terminal A turn-on response receiving gateway A, enters the talking state between terminal A, B.
2. method according to claim 1, is characterized in that: described data terminal A, B are modem or are facsimile machine.
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| CN104811579B (en) * | 2014-01-26 | 2018-05-22 | 中国移动通信集团北京有限公司 | A kind of facsimile service processing system, method and apparatus |
| CN111107231A (en) * | 2019-12-03 | 2020-05-05 | 深圳震有科技股份有限公司 | Method and system for automatically switching to T.38 fax, computer equipment and medium |
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| CN101098321A (en) * | 2007-06-28 | 2008-01-02 | 中兴通讯股份有限公司 | Method of selecting media gateway fax transmission mode according to terminal types |
| CN101119292A (en) * | 2006-07-31 | 2008-02-06 | 华为技术有限公司 | Method of negotiating data traffic transmission between gateways |
| CN101841611A (en) * | 2010-04-21 | 2010-09-22 | 中兴通讯股份有限公司 | Facsimile method based on voice over internet protocol (VOIP) and system thereof |
| CN102377890A (en) * | 2011-12-05 | 2012-03-14 | 深圳市共进电子股份有限公司 | Method for realizing fax based on voice over internet phone (VOIP) voice communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100499720C (en) * | 2005-09-23 | 2009-06-10 | 华为技术有限公司 | Realization method for providing multi-rate data information loading service |
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| CN101119292A (en) * | 2006-07-31 | 2008-02-06 | 华为技术有限公司 | Method of negotiating data traffic transmission between gateways |
| CN101098321A (en) * | 2007-06-28 | 2008-01-02 | 中兴通讯股份有限公司 | Method of selecting media gateway fax transmission mode according to terminal types |
| CN101841611A (en) * | 2010-04-21 | 2010-09-22 | 中兴通讯股份有限公司 | Facsimile method based on voice over internet protocol (VOIP) and system thereof |
| CN102377890A (en) * | 2011-12-05 | 2012-03-14 | 深圳市共进电子股份有限公司 | Method for realizing fax based on voice over internet phone (VOIP) voice communication system |
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Effective date of registration: 20190610 Address after: 519000 High-tech Zone, Zhuhai City, Guangdong Province, No. 1 Software Park Road, Tangjiawan Town, Convention and Exhibition Center No. 1 15A, Unit 1, Area A Patentee after: Guangdong Jiami Technology Co., Ltd. Address before: 519080 Unit 1-4, Building 5, Production and Processing Center, No. 1 Software Park Road, Zhuhai City, Guangdong Province Patentee before: Guangdong Jiahe Communication Technology Co., Ltd. |
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