CN1874380A - Method for realizing a call - Google Patents
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- CN1874380A CN1874380A CN 200510115810 CN200510115810A CN1874380A CN 1874380 A CN1874380 A CN 1874380A CN 200510115810 CN200510115810 CN 200510115810 CN 200510115810 A CN200510115810 A CN 200510115810A CN 1874380 A CN1874380 A CN 1874380A
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- 230000000977 initiatory effect Effects 0.000 claims description 12
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Abstract
The method comprises: after a first terminal builds a communication connection with a second terminal by using SIP protocol and a first soft switch device receives the SIP signaling triggered by flashing hook from the first terminal, the first terminal is hanged up, and through the SIP signaling informs the second soft switch device to hang up the second terminal; after receiving the number of the third terminal transmitted by the first terminal, the first soft switch device builds a connection with a the third switch device connected to the third terminal through the SIP signaling, and in the connection building process it send the service description protocol (SDP) used in multi-party call to the first terminal; with the connection built on the SDP used in multi-party call a session is made between the first terminal and the third terminal.
Description
Technical field
The present invention relates to the sip technique field, be meant the implementation method of conversation especially.
Background technology
To the evolution of NGN network, operator just progressively turns to the Networking Solutions ﹠ provisioned based on NGN to the PSTN network.Because being easy to realize new value-added service and the opening of self and distributed, NGN has progressively become the new lover of many operators and has been listed in their investment plan.For providing various supplementary services (Supplementary Services), NGN user become the task of top priority of NGN Networking Solutions ﹠ provisioned.NGN is a unified universal network solution, and it comprises IP-based user and procotol (as SIP, H.323 wait).Wherein, Session Initiation Protocol is because its characteristics such as open and simple have become one of the widest agreement of range of application.
In the process of NGN evolution, NGN at first must provide to the user and be similar to all supplementary services that PSTN can provide, and for the terminal use, they should keep identical with occupation mode in the PSTN network to the mode of using supplementary service, are convenient to the acceptance of user to supplementary service among the NGN.At present, in the NGN network, can mainly classify as following two kinds of solutions for the implementation of supplementary service: terminal control mode and network control mode.
The terminal control mode is a kind of new implementation, and it requires terminal itself intelligent more, realizes more service logic and has stronger professional control ability.Still lack relevant technical standard at present, and the intercommunication ability between desired terminal and other network equipments is also unsatisfactory.Therefore, this mode causes with inferior defective: user's mode of operation and PSTN user's mode of operation are inconsistent; Owing to trigger business in terminal, be difficult to user's service availability is managed; Call flow requires the close fit between the terminal and the webserver, and the enforcement of any new business all needs the upgrading support of the terminal and the webserver; Before the triggering business, terminal must can trigger any business according to user's the service attribute and the decision-makings such as context details of calling.
Network control mode is a kind of implementation that adopts centralized control, can use different procotols between terminal (as SIP IAD) and the Softswitch, but to the user is complete transparent (promptly not needing to change user's occupation mode), and the user can still use the POTS phone.But also there is not the supplementary service of control mode Network Based to realize standard or standard at present.
In PSTN, MultiParty Service is the supplementary service of a practicality, and its business of deriving also comprises Three-Way Calling, conference telephone or the like.In NGN, use Session Initiation Protocol to realize that MPTY is an inevitable trend, but as mentioned above, present supplementary service implementation in NGN mostly is the terminal control mode, and as above shortcoming is arranged; And, also do not realize the relevant criterion of supplementary services such as MPTY, video conferencing for using network control mode.
Summary of the invention
In view of this, main purpose of the present invention has been to provide the implementation method of conversation, realizing the flexible conversation of the control mode Network Based under the Session Initiation Protocol, and then can be used for realizing supplementary service such as MPTY.
The invention provides a kind of implementation method of conversation, first terminal may further comprise the steps after using communicating by letter of the Session Initiation Protocol foundation and second terminal:
After the SIP signaling that first terminal of receiving A1, first Softswitch that connects first terminal is triggered by hooking, hang up first terminal, and hang up second terminal by second Softswitch that the SIP signaling connects second terminal;
After B1, first Softswitch are collected the number of the 3rd terminal that first terminal sent, be established to the connection of the 3rd Softswitch that the 3rd terminal connected by the SIP signaling, and in the process of connecting, send the business description agreement SDP of MPTY to the 3rd terminal that the 3rd Softswitch is connected;
C1, first Softswitch send to first terminal with the business description agreement SDP of described MPTY;
D1, first and third terminal are according to connect conversation between carrying out of the business description agreement SDP of described MPTY.
Wherein, step C1 further comprises: first Softswitch sends to second terminal by second Softswitch with the business description agreement SDP of described MPTY;
Step D1 further comprises: second terminal is set up to be connected with first and third terminal according to the business description agreement SDP of described MPTY and is carried out MPTY.
Wherein, further comprise behind the step D1:
A3, first Softswitch are hung up first terminal, and are hung up the 3rd terminal by SIP signaling the 3rd Softswitch after receiving the SIP signaling of first terminal by the hooking triggering;
After the SIP signaling that the first terminal specific keys of receiving B3, first Softswitch triggers, the business description agreement SDP of described MPTY is sent to second terminal by second Softswitch;
C3, first and second terminal are according to connect conversation between carrying out of the business description agreement SDP of described MPTY.
Wherein, further comprise behind the step D1:
A4, first Softswitch are hung up first terminal, and are hung up the 3rd terminal by SIP signaling the 3rd Softswitch after receiving the SIP signaling of first terminal by the hooking triggering;
After the SIP signaling that the first terminal specific keys of receiving B4, first Softswitch triggers, will release order by second Softswitch and to notify second Softswitch to discharge second terminal;
C4, first and third terminal are according to connect conversation between carrying out of the business description agreement SDP of described MPTY.
Wherein, further comprise behind A1, A3 or the A4: the first soft switch requested service sound resource, then to the first terminal plays service informing sound; Play the hang-up sound to held terminal.
Wherein, described terminal is a sip terminal, produces described specific SIP signaling message according to user's hooking sip terminal; Or,
Described terminal comprises POTS terminal and SIP gateway, and the POTS terminal passes to the SIP gateway with described user's hooking signal, and the SIP gateway receives that the back produces described specific SIP signaling message.
Wherein, described SIP gateway comprises: SIP IAD SIP AG or SIP integrated access equipment SIP-IAD.
Wherein, further comprise before the step B1: the first Softswitch application is used for the conferencing resource of MPTY, and the business description agreement SDP of described MPTY is the SDP that comprises described conferencing resource.
The invention provides the implementation method of another kind of conversation, first terminal may further comprise the steps after using communicating by letter of Session Initiation Protocol foundation and certain terminal:
A9, first Softswitch are hung up first terminal after receiving the SIP signaling of first terminal by the hooking triggering, and hang up other-end by the Softswitch in other connections of SIP signaling;
After B9, first Softswitch are collected the number of next terminal that first terminal sent, be established to the connection of the Softswitch that next terminal connects by the SIP signaling, and in the process of connecting, send the business description agreement SDP of MPTY to next terminal that described switching equipment connects;
C9, first Softswitch send to institute's held terminal with the business description agreement SDP of described MPTY;
D9, set up MPTY between the above-mentioned terminal according to the business description agreement SDP of described MPTY.
By said method as can be seen, the present invention is based on network control mode and provide talk business flexibly for sip user, conversation also can realize the handoff calls between the different user when not only can realize in many ways, thereby has realized MPTY flexibly and based on the conference telephone of MPTY.Because what adopt is network control mode, the MultiParty Service logic is finished in webserver side (as Softswitch), Internet resources are (as conferencing resource, voice resource etc.) distribution and management are also provided by webserver side, and Internet resources are shared by a plurality of users and are used, and also can manage and the may command ability for the service provider provides good business.And, because employing is that network control mode is realized talk business flexibly, separated the coupling of sip terminal and sip server, the talk business implementation will not change the mode of operation of user when using business.
Description of drawings
Fig. 1 is the flow chart of setting up of MPTY.
Fig. 2 sets up flow chart figure for both sides' MPTY that the third party hangs up of conversing.
Fig. 3 makes the user of hang-up recover the flow chart of MPTY.
Fig. 4 is the flow chart that discharges the user who hangs up in the flow process of setting up of MPTY.
Embodiment
This paper has proposed to provide for sip user the implementation of flexible conversation in the NGN network, with flexible switching in the realization user's communication and the conversation between the different user, and realize MPTY flexibly.The present invention is described in detail in conjunction with the embodiments referring to accompanying drawing.
At first the present invention is described in detail referring to the flow chart of setting up of the MPTY shown in Fig. 1, in this example, the user of sip terminal A has the authority of initiating and managing MultiParty Service, the sip terminal party A-subscriber is by the user of hooking calling SIP terminal C at sip terminal A calling SIP terminal B and after entering conversation state, initiate the MPTY between sip terminal A, B, the C, the MPTY method for building up may further comprise the steps:
Step 101: user's hooking, after sip terminal A detects this hookflash event, trigger re-INVITE (heavily inviting) information reporting and give soft switch A.The SDP of this re-INVITE (Session Description Protocol) is HOLD SDP.
Step 102: soft switch A receives described re-INVITE, to available Resource Server application HOLD sound resource, applying for that successfully the back sends re-INVITE message by soft switch B to sip terminal B, SDP in this message also is HOLD SDP, so that sip terminal B is hung up, after sip terminal B called out and is suspended, this was called out original RTP Media Stream and also will be suspended; SDP in this message also contains media resource, to allow the user of sip terminal B listen the HOLD sound.
Step 103: soft switch A returns response message (200/ACK) to sip terminal A, and this response message indication sip terminal A send professional sound prompting subscriber dialing to the user.
After step 104:SIP terminal A receives response message, send professional sound to the user, and the operation that begins to collect the digits, the number of the sip terminal C that the collection user dials in.
Step 105: behind the EO that collects the digits, sip terminal A reports the number of the collected sip terminal C of soft switch A by INFO.
Step 106: behind the number of the sip terminal C that soft switch A obtains reporting, after the judgement number has received, to the sip terminal C request of making a call.In the call request message of initiating, carry the SDP of conferencing resource, can be called CONF SDP to sip terminal C.
In order to prevent sip terminal C to be connected the failure of back application conferencing resource, and in order behind sip terminal C off-hook, just can directly to enter meeting, before the request of making a call to sip terminal C, can in the call request message of initiating, carry the SDP of described conferencing resource earlier at this locality application conferencing resource to sip terminal C.
Step 107: behind the off hook signal that receives sip terminal C, soft switch A is responsible for initiating the media modification process to sip terminal A, B, and sip terminal A, B are joined in the meeting.Its modification process is: soft switch A initiates the re-INVITE process to sip terminal A, B respectively, and that carry in the re-INVITE request message is the SDP of conferencing resource.
Afterwards, sip terminal A, B receive re-INVITE message, according to the SDP of conferencing resource, add active conference, realize the MPTY of sip terminal A, B, C.
Whenever, sip terminal A receives user's hooking and calls out other users such as sip terminal D that he also will be added among the meeting after sip terminal D replys, and repeat no more once more.
As Fig. 2, according to the service needed of reality, also can realize calling SIP terminal C after, realize the conversation between sip terminal A, the C, and hang up current sip terminal B.Realize this situation, need when step 107, not initiate the media modification process to sip terminal B, and only initiate the media modification process to sip terminal A, sip terminal A is joined in the meeting, realize that sip terminal A and C have entered conference status and talked about all, and sip terminal B still is in suspended state.
And for the embodiment of Fig. 2, when sip terminal A and C are conversing, during state that sip terminal B is suspended, sip terminal A still once more hooking initiate three party service, referring to Fig. 3, may further comprise the steps:
Step 301: the user is hooking once more, after sip terminal A detects this hookflash event, triggers re-INVITE (heavily inviting) information reporting and gives soft switch A.The SDP of this re-INVITE (Session Description Protocol) is HOLD SDP.
Step 302: soft switch A receives described re-INVITE, and notice soft switch C hangs up sip terminal C, and soft switch A also returns response message (200/ACK) to sip terminal A, and this response message indication sip terminal send professional sound to the user.
The number that the user dials in is collected in the step 303:SIP terminal A operation that collects the digits, and reports soft switch A by INFO.In this example, according to business need, the number that the collection user dials in is " 1 ", and the expression indication enters the Three-Way Calling state.
Step 304: after soft switch A received that subscriber dialing is selected, if also there is not then allocation of conference resources of allocation of conference resources, this example was then directly initiated the media modification process to sip terminal A, B, C three parts owing to distributed conferencing resource.That the re-INVITE request message of this media modification process carries will be the SDP of conferencing resource.
Afterwards, sip terminal A, B, C response insert conference system.Three-Way Calling between the realization.
Embodiment for Fig. 3, when sip terminal A and C converse, during state that sip terminal B is suspended, in step 303, if according to business need, when collecting number that the user dials in and being released in the number " 3 " of sip terminal B of hang-up for expression, referring to Fig. 4, step after then corresponding is: after soft switch A received that subscriber dialing is selected, indication soft switch B discharged the resource of sip terminal B, indicated soft switch C to recover conference call between sip terminal A and the C simultaneously.This process is exactly that hooking initiates to discharge the process that is suspended sip terminal B.
Embodiment for Fig. 3, when sip terminal A and C converse, during state that sip terminal B is suspended, in step 303, if according to business need, when collecting number that the user dials in and switching to the number " 4 " of communicating by letter with the sip terminal B that hangs up for expression, the step after then corresponding is: after soft switch A receives that subscriber dialing is selected, indication soft switch B recover and sip terminal B between conference call; Indicate soft switch C to hang up sip terminal C simultaneously.This process is exactly that hooking initiates to switch and the communication process that is suspended user B
Sip terminal above can be the combination of POTS phone and SIP gateway, and the SIP gateway can be SIP AG (SIP IAD), SIP-IAD equipment such as (SIP integrated access equipment).The SIP gateway is used to realize the access of POTS phone, with voice digitization and be packaged as IP and be sent to the SIP Service Control Unit, and adopts telephony signaling to communicate by letter with POTS, uses SIP to communicate by letter with the SIP Service Control Unit.POTS is by SIP gateway access network, and what POTS sent the hooking signal is analog signal, after being received by the SIP gateway, triggers generating re-INVITE message.Certainly for the sip terminal of supporting Session Initiation Protocol, can be suitable for the present invention equally directly according to hooking re-INVITE trigger message.
By said method as can be seen, the present invention is based on network control mode and provide talk business flexibly for sip user, conversation when not only can realize in many ways, also can realize the handoff calls between the different user, thereby having realized flexibly conversation control, and then having can be that the user provides MPTY and based on the conference telephone of MPTY.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, a kind of implementation method of conversation is characterized in that, first terminal may further comprise the steps after using communicating by letter of the Session Initiation Protocol foundation and second terminal:
After the SIP signaling that first terminal of receiving A1, first Softswitch that connects first terminal is triggered by hooking, hang up first terminal, and hang up second terminal by second Softswitch that the SIP signaling connects second terminal;
After B1, first Softswitch are collected the number of the 3rd terminal that first terminal sent, be established to the connection of the 3rd Softswitch that the 3rd terminal connected by the SIP signaling, and in the process of connecting, send the business description agreement SDP of MPTY to the 3rd terminal that the 3rd Softswitch is connected;
C1, first Softswitch send to first terminal with the business description agreement SDP of described MPTY;
D1, first and third terminal are according to connect conversation between carrying out of the business description agreement SDP of described MPTY.
2, method according to claim 1 is characterized in that, step C1 further comprises: first Softswitch sends to second terminal by second Softswitch with the business description agreement SDP of described MPTY;
Step D1 further comprises: second terminal is set up to be connected with first and third terminal according to the business description agreement SDP of described MPTY and is carried out Three-Way Calling.
3, method according to claim 1 is characterized in that, further comprises behind the step D1:
A3, first Softswitch are hung up first terminal, and are hung up the 3rd terminal by SIP signaling the 3rd Softswitch after receiving the SIP signaling of first terminal by the hooking triggering;
After the SIP signaling that the first terminal specific keys of receiving B3, first Softswitch triggers, the business description agreement SDP of described MPTY is sent to second terminal by second Softswitch;
C3, first and second terminal are according to connect conversation between carrying out of the business description agreement SDP of described MPTY.
4, method according to claim 1 is characterized in that, further comprises behind the step D1:
A4, first Softswitch are hung up first terminal, and are hung up the 3rd terminal by SIP signaling the 3rd Softswitch after receiving the SIP signaling of first terminal by the hooking triggering;
After the SIP signaling that the first terminal specific keys of receiving B4, first Softswitch triggers, will release order by second Softswitch and to notify second Softswitch to discharge second terminal;
Conversation between C4, first and third terminal are carried out according to the business description agreement SDP recovery connection of the MPTY of storage.
5, method according to claim 1 is characterized in that, further comprises behind A1, A3 or the A4: the first Softswitch requested service sound resource, then to the first terminal plays service informing sound; Play the hang-up sound by the Softswitch that held terminal connected to held terminal.
6, method according to claim 1 is characterized in that, described terminal is a sip terminal, produces the SIP signaling that described hooking triggers according to user's hooking sip terminal; Or,
Described terminal comprises POTS terminal and SIP gateway, and the POTS terminal passes to the SIP gateway with described user's hooking signal, and the SIP gateway receives that the back produces the SIP signaling that described hooking triggers.
7, method according to claim 6 is characterized in that, described SIP gateway comprises:
SIP IAD SIP AG or SIP integrated access equipment SIP-IAD.
8, method according to claim 1 is characterized in that, further comprise before the step B1: the first Softswitch application is used for the conferencing resource of MPTY, and the business description agreement SDP of described MPTY is the SDP that comprises described conferencing resource.
9, a kind of implementation method of conversation is characterized in that, first terminal may further comprise the steps after using communicating by letter of Session Initiation Protocol foundation and certain terminal:
A9, first Softswitch are hung up first terminal after receiving the SIP signaling of first terminal by the hooking triggering, and hang up the other-end that is in the conversation of first Softswitch by other Softswitch of SIP signaling;
After B9, first Softswitch are collected the number of next terminal that first terminal sent, be established to the connection of next Softswitch that next terminal connects by the SIP signaling, and in the process of connecting, send the business description agreement SDP of MPTY to next terminal that described next Softswitch connects;
C9, first Softswitch send to institute's held terminal with the business description agreement SDP of described MPTY;
D9, set up MPTY between above-mentioned each terminal according to the business description agreement SDP of described MPTY.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101158102A CN100459634C (en) | 2005-11-09 | 2005-11-09 | Method for realizing a call |
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|---|---|---|---|
| CNB2005101158102A CN100459634C (en) | 2005-11-09 | 2005-11-09 | Method for realizing a call |
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| CN1874380A true CN1874380A (en) | 2006-12-06 |
| CN100459634C CN100459634C (en) | 2009-02-04 |
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| CNB2005101158102A Expired - Fee Related CN100459634C (en) | 2005-11-09 | 2005-11-09 | Method for realizing a call |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008101443A1 (en) * | 2007-02-16 | 2008-08-28 | Huawei Technologies Co., Ltd. | A method, system and device for acquiring a media stream |
| WO2010020167A1 (en) * | 2008-08-18 | 2010-02-25 | 华为技术有限公司 | Method for transferring media flow and system and server thereof |
| CN101854441A (en) * | 2010-05-26 | 2010-10-06 | 广东欧珀移动通信有限公司 | Multi-party call terminal control method |
| CN101997997A (en) * | 2010-11-19 | 2011-03-30 | 太仓市同维电子有限公司 | System for realizing Internet telephony call transfer by utilizing SIP protocol and method thereof |
| CN101110870B (en) * | 2007-08-27 | 2011-05-25 | 中兴通讯股份有限公司 | Method for implementing switch hook in conversation initialized protocol |
| CN102480574A (en) * | 2010-11-23 | 2012-05-30 | 中兴通讯股份有限公司 | Three-party calling method, device and system |
| CN104468622A (en) * | 2014-12-22 | 2015-03-25 | 上海网测通信技术有限公司 | Method for achieving three-party calling based on SIP protocol call waiting service |
| CN105491040A (en) * | 2015-12-07 | 2016-04-13 | 上海市共进通信技术有限公司 | Multiparty conference calling method based on SIP protocol |
| CN110493022A (en) * | 2019-08-26 | 2019-11-22 | 中国联合网络通信集团有限公司 | A kind of method for building up, the apparatus and system of tripartite's session |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5263084A (en) * | 1991-07-22 | 1993-11-16 | Northern Telecom Limited | Spontaneous caller identification with call-waiting |
| US6920213B2 (en) * | 2000-09-15 | 2005-07-19 | Verizon Services Corp. | Methods and apparatus for facilitating the interaction between multiple telephone and computer users |
| CN1225133C (en) * | 2002-12-27 | 2005-10-26 | 北京邮电大学 | Method of opening control point business capacity of intelligent network service to the third party |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008101443A1 (en) * | 2007-02-16 | 2008-08-28 | Huawei Technologies Co., Ltd. | A method, system and device for acquiring a media stream |
| CN101110870B (en) * | 2007-08-27 | 2011-05-25 | 中兴通讯股份有限公司 | Method for implementing switch hook in conversation initialized protocol |
| WO2010020167A1 (en) * | 2008-08-18 | 2010-02-25 | 华为技术有限公司 | Method for transferring media flow and system and server thereof |
| CN101657026B (en) * | 2008-08-18 | 2013-01-23 | 华为技术有限公司 | Media stream transferring method, user equipment and server |
| CN101854441A (en) * | 2010-05-26 | 2010-10-06 | 广东欧珀移动通信有限公司 | Multi-party call terminal control method |
| CN101997997A (en) * | 2010-11-19 | 2011-03-30 | 太仓市同维电子有限公司 | System for realizing Internet telephony call transfer by utilizing SIP protocol and method thereof |
| WO2012068839A1 (en) * | 2010-11-23 | 2012-05-31 | 中兴通讯股份有限公司 | Method, device and system for three-party call |
| CN102480574A (en) * | 2010-11-23 | 2012-05-30 | 中兴通讯股份有限公司 | Three-party calling method, device and system |
| CN102480574B (en) * | 2010-11-23 | 2015-01-28 | 中兴通讯股份有限公司 | Three-party calling method, device and system |
| CN104468622A (en) * | 2014-12-22 | 2015-03-25 | 上海网测通信技术有限公司 | Method for achieving three-party calling based on SIP protocol call waiting service |
| CN104468622B (en) * | 2014-12-22 | 2018-04-13 | 上海网测通信技术有限公司 | The method that Three-Way Calling is realized based on Session Initiation Protocol call waiting |
| CN105491040A (en) * | 2015-12-07 | 2016-04-13 | 上海市共进通信技术有限公司 | Multiparty conference calling method based on SIP protocol |
| CN110493022A (en) * | 2019-08-26 | 2019-11-22 | 中国联合网络通信集团有限公司 | A kind of method for building up, the apparatus and system of tripartite's session |
| CN110493022B (en) * | 2019-08-26 | 2021-05-11 | 中国联合网络通信集团有限公司 | Method, device and system for establishing three-party session |
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| Publication number | Publication date |
|---|---|
| CN100459634C (en) | 2009-02-04 |
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