CN101159787A - Soft switching communication system and method of implementing session service - Google Patents
Soft switching communication system and method of implementing session service Download PDFInfo
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- CN101159787A CN101159787A CNA2007101242915A CN200710124291A CN101159787A CN 101159787 A CN101159787 A CN 101159787A CN A2007101242915 A CNA2007101242915 A CN A2007101242915A CN 200710124291 A CN200710124291 A CN 200710124291A CN 101159787 A CN101159787 A CN 101159787A
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Abstract
The invention discloses a soft switch communication system and a method thereof to realize a conference service. The method comprises the following steps: firstly, a calling terminal sends a conference request to a affiliated soft switch, and the soft switch then creates a conference by a conference application server and establishes a real-time transmission protocol connection with the conference application server through a real-time transmission protocol channel established by a media server; secondly, the calling terminal sends an invitation request to the affiliated soft switch, and invites the a called terminal to participate in the conference through the conference server. The invention realizes the conference service under the existing SIP protocol and all the terminals can use the conference service when the affiliated soft switch builds a network with the application conference server; moreover, the application mode is more flexible.
Description
Technical field
The present invention relates to the flexible exchanging network of communication field, relate in particular to a kind of soft switching communication system and method thereof that realizes convention business.
Background technology
Differentiation along with the telephone network architecture, traditional pstn telephone network (PSTN) is to NGN (Next Generation Network, next generation network) evolution is inevitable main trend, carries out traditional voice service based on the NGN network and progressively occurs.SIP (initial session protocol) terminal is a very important part in the NGN network architecture, is just progressively used on a large scale.At present, the convention business of traditional PSTN network is implemented on the PSTN phone, is applicable to the PSTN network, also is not applicable to the method for sip terminal realization convention business.
Summary of the invention
Technical problem to be solved by this invention provides a kind of soft switchcall server and method thereof that realizes convention business, realizes convention business on sip terminal.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of implementation method of convention business may further comprise the steps:
(1) calling terminal soft switch under it sends conference request, and this soft switch is passed through the conference applications server and created meeting, and passes through real-time transmission protocol path that media server sets up and set up RTP with the meeting application server and be connected;
(2) calling terminal soft switch under it sends and invites terminal called to add the request of meeting, and this soft switch is passed through the conference applications server and invited terminal called to add meeting.
Wherein, described step (1) further may further comprise the steps:
(1.1) calling terminal sends the soft switch of request for conference to its ownership, and this soft switch sends to the conference applications server by initial session protocol and creates request for conference;
(1.2) described conference applications server generates Conference ID;
(1.3) Conference ID of request for conference to above-mentioned generation initiated in the described soft switch of conference applications server notification again;
(1.4) described soft switch is initiated request for conference again to described Conference ID;
(1.5) the conference applications server is set up RTP with described soft switch then and is connected to media server application meeting real-time transmission protocol path.
Wherein, if the conference applications server generates the Conference ID failure, then return failed message to described soft switch and take out stitches in the described step (1), finish this convention business.
Wherein, described step (2) further may further comprise the steps:
(2.11) calling terminal soft switch under it sends and invites terminal called to add the request of meeting, and this soft switch sends to the conference applications server again invites terminal called to add the request of meeting;
(2.12) described conference applications server returns the soft switch of response message under the calling terminal, and initiates the soft switch of request for conference under the terminal called;
(2.13) terminal called is replied, and the soft switch under it is returned response message to the conference applications server, sets up RTP with it and connects;
(2.14) the soft switch terminal called under the conference applications server notification calling terminal has added meeting.
Wherein, described step (2) further may further comprise the steps:
(2.21) calling terminal soft switch under it sends and invites terminal called to add the request of meeting, and this soft switch sends to the soft switch that terminal called belonged to again invites terminal called to add the request of meeting;
(2.22) response message is returned in the soft switch that terminal called belonged to, and the notice terminal called, and terminal called accepts request then, and soft switch sends request for conference under it, and this soft switch is initiated request for conference again to the meeting application server;
(2.23) soft switch that terminal called belonged to is set up RTP with the meeting application server and is connected;
(2.24) the soft switch notice soft switch terminal called that calling terminal belonged to that terminal called belonged to has added meeting;
(2.25) the soft switch terminal called that belonged to of conference applications server notification calling terminal has added meeting.
A kind of soft switching communication system of realizing convention business comprises: calling terminal and the soft switch that is belonged to thereof, terminal called and the soft switch that is belonged to thereof, conference applications server, media server; Described soft switch is passed through initial session protocol with the meeting application server and is linked to each other, and described media server links to each other with the meeting application server;
The soft switch that described calling terminal belonged to is used to receive the request for conference of calling terminal, initiates to create request for conference to the conference applications server, sets up RTP with it and is connected; The invitation terminal called that receives calling terminal adds the request of meeting, and the soft switch that is belonged to conference applications server or terminal called sends this request;
The soft switch that described terminal called belonged to is used for when terminal called is accepted the invitation, and sets up RTP with the meeting application server and is connected;
Described conference applications server is used to generate Conference ID, to media server application meeting real-time transmission protocol path;
Described media server is used to realize the media function of meeting.
Wherein, described conference applications server comprises meeting generating apparatus and meeting control device; Described meeting generating apparatus is used to generate Conference ID, and described meeting control device is used to control meeting.
Wherein, described calling terminal and terminal called are session initiation protocol terminal.
The present invention has following beneficial effect:
1) under existing Session Initiation Protocol meeting framework, realized convention business.
2) all terminals all can be used convention business, as long as soft switch and the networking of conference applications server that terminal belonged to.
3) application mode is flexible, for example, realize convention business if want to spend few cost, can unite two into one conference applications server and soft switch, the performance of the conference applications server of said method is soft switch like this, caller, the called soft switch that belongs to show as the sip terminal that belongs to soft switch, and the sip terminal that belongs to this soft switch like this can use convention business.
Description of drawings
Fig. 1 is the soft switching communication system structure chart that the present invention realizes convention business;
Fig. 2 is the soft switching communication system structure chart of the embodiment of the invention;
Fig. 3 is the structure chart of conference applications server;
Fig. 4 is the signaling process figure that meeting is initiated in soft switch 1 among the embodiment;
Fig. 5 is the process chart when the conference applications server is received the establishment request for conference of soft switch 1 among the embodiment;
Fig. 6 is that calling terminal A invites terminal called C to add the method signaling process figure of meeting among the embodiment, initiates request by the conference applications server in this method;
Fig. 7 is that calling terminal A invites terminal called C to add the another kind of method signaling process figure of meeting among the embodiment, initiates request by terminal C in this method;
Fig. 8 is the process chart when the conference applications server is received soft switch 1 to the request for conference of Conference ID among the embodiment.
Embodiment
The present invention proposes a kind of soft switching communication system and method thereof that realizes convention business by Session Initiation Protocol, this system comprises calling terminal and affiliated soft switch thereof, terminal called and affiliated soft switch thereof, the conference applications server, media server, as shown in Figure 1, soft switch is passed through Session Initiation Protocol with the meeting application server and is linked to each other, and media server links to each other with the meeting application server.
Wherein, the soft switch that calling terminal belonged to is used to receive the request for conference of calling terminal, initiates to create request for conference to the conference applications server, sets up RTP (RTP) with it and is connected; The invitation terminal called that receives calling terminal adds the request of meeting, and the soft switch that is belonged to conference applications server or terminal called sends this request.The soft switch that terminal called belonged to is used for when terminal called is accepted the invitation, and sets up RTP with the meeting application server and is connected.The conference applications server is used to generate Conference ID, to media server application meeting RTP passage.Media server is used to realize the media function of meeting.
The present invention also provides a kind of said system to realize the method for session service, and this method is:
(1) calling terminal soft switch under it sends conference request, and this soft switch is passed through the conference applications server and created meeting, and passes through RTP passage that media server sets up and set up RTP with the meeting application server and be connected;
(2) calling terminal soft switch under it sends and invites terminal called to add the request of meeting, and this soft switch is passed through the conference applications server and invited terminal called to add meeting.
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
As shown in Figure 2, in the present embodiment, IAD under each soft switch territory (the comprehensive access) equipment, AG (IAD) equipment or sip terminal etc. are by SIP/H248/MGCP (MGCP) access softswitch system, each soft switch territory is passed through Session Initiation Protocol with the meeting application server and is linked to each other, and the conference applications server can link to each other by Session Initiation Protocol with media server.
Wherein, the structure of conference applications server comprises meeting generating apparatus and meeting control device as shown in Figure 3.Wherein, the meeting generating apparatus is responsible for generating Conf-ID (Conference ID), and this Conf-ID is that the overall situation is unique, and it is identical not having two in the Conf-ID that all are being served.The meeting control device is responsible for producing all logic controls that discharge from meeting Conf-ID, and for example receiving terminal adds meeting, invites joining meeting to terminal, closing session etc.
With the lower part is the session service implementation method of said system embodiment, is that terminal C under calling terminal, soft switch 2 territories is that terminal called is an example with the terminal A under soft switch 1 territory, adds meeting and terminal A from terminal A respectively and invites C to add meeting two aspects to describe.
As shown in Figure 4, the method for terminal A adding meeting is:
401, the INVITE of the initiation of the terminal A under soft switch 1 territory establishment meeting asks soft switch 1, and wherein Request Line head and To fill out Conf_factory, and the From head is filled out A, shows that this is the request that user A creates meeting.Soft switch 1 finds that this is the request of creating meeting, routes the call to the conference applications server;
402, as Fig. 5, the conference applications server carries out following operation: one after receiving the establishment request for conference that soft switch 1 sends: the conference applications discovering server is a head of creating meeting, gives the meeting generating apparatus with control.Two: the meeting generating apparatus uses uniqueness algorithm generating apparatus to generate the Conf-ID of meeting earlier, then with the Conf-ID notification of meetings control device that generates, the chairman of Conf-ID is made as A, and writes database, then control is given the meeting control device.Three: the meeting control device sends 302 Moved Contact (migration conference status message) for soft switch 1, and wherein the contact head is filled out Conf-ID, the Conf-ID that notice soft switch 1 is newly-generated.The calling of back is all controlled by the meeting control device.
403, after the message that the conference applications server sends is received in soft switch 1, note the Conf-ID in the message, send ACK (response) message for earlier the conference applications server and receive Conf-ID to show it, re-assembly INVITE (conference request) then and send to the meeting control device, wherein Request Line head and To head are filled out Conf-ID.
404, after the conference applications server is received the INVITE that has Conf-ID, give the meeting control device with control, the meeting control device carries out following operation, as shown in Figure 8:
Whether a, check Conf-ID are effective Conference ID.Conference ID is the unique voucher that is used for discerning meeting URI (generic resource identifier) and conferencing resource in the whole meeting, must at first judge the legitimacy of Conf-ID.If not effective Conference ID, then the conference applications server is directly replied Not Found to soft switch 1, discharges resource; If then enter following step b;
Whether b, check Conf-ID applied for IMS conference medium.If do not have, then need to enter following step c to media server application IMS conference medium; If applied for then directly entering following step c by IMS conference medium;
C, to IMS conference medium application meeting RTP;
D, will call out the formation that Dialog joins Conf-ID, in other words, this step is that calling terminal is joined meeting;
E, send 180Ringing (ring) message to soft switch 1.
F, send 200 OK (replying) message to soft switch 1.
405, soft switch 1 receives that replying the back returns ACK (response) message, and both sides enter conversation.
The method that terminal A invites terminal C to add meeting comprises by the conference applications server to be initiated request and initiates two kinds of requests by terminal C, is described below respectively:
As shown in Figure 6, this method is initiated request for conference by the conference applications server to soft switch 1, specifically may further comprise the steps:
The number of 601 user A hooking appropriation family C, soft switch 1 sends REFER (inviting user C to add the request of meeting Conf-ID) signaling for the conference applications server after receiving these information, wherein Request Line head is filled out the Conf-ID of user A place meeting, and the Refer-To head is filled out the number of C;
602, after the conference applications server is received the REFER signaling, note the number of C, and respond 202 Accepted (accepting user C is added the request of meeting) message and NOTIFY (trying) (notice that user C is being added meeting) message.
603, soft switch 1 sends 200 OK (push-notification-answer) to the conference applications server after receiving NOTIFY, the conference applications server is assembled INVITE (inviting C to add meeting) message again and is sent to soft switch 2 and this Dialog is joined meeting, wherein Request Line head and To head are filled out the number of C, and the Contact head is filled out the Conf-ID of this meeting.Soft switch 2 directly makes a call to user C after receiving INVITE.
604, soft switch 2 then sends 180Ringing to the conference applications server if find user C ring; Reply if find user C, then send 200 OK to the conference applications server; The conference applications server is received back response ACK.Then, the conference applications server is set up the RTP passage by soft switch 2 with user C.
605, the conference applications server sends NOTIFY (200 OK) for soft switch 1, tells soft switch 1C user to add meeting, and soft switch 1 is notified user A and returned OK for the conference applications server, so far invites C to add conference flow and finishes.
As shown in Figure 7, this method is initiated request by user terminal C, specifically may further comprise the steps:
701, the number of user A hooking appropriation family C, soft switch 1 send the REFER signaling for soft switch 2 after receiving these information, and wherein Request Line head is filled out user C number, and the Refer-To head is filled out the Conf-ID of A place meeting;
702, after the REFER signaling is received in soft switch 2, note the number of Conf-ID, notify user C to have the people to invite it to add meeting, receive such request? if receive, then soft switch 2 responds 202 Accepted (accepting C is added the request of meeting) message and NOTIFY (trying) (notice that C is being added meeting) message for soft switch 1.
703, soft switch 1 is responded 200 OK (response message) to soft switch 2 after receiving NOTIFY, soft switch 2 assembling INVITE (inviting C to add meeting message) send to the conference applications server, wherein Request Line head and To head are filled out Conf-ID, and the From head is filled out user C.
704, the conference applications server is received the processing of making behind the INVITE as shown in Figure 8, returns 180 Ringing and 200 OK then, and 2 times ACK of soft switch enter conversation.
705, soft switch 2 and conference applications server send NOTIFY (200 OK) respectively and tell soft switch 1 user C to add meeting, and flow process is finished to invite in the back that meets with a response.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the implementation method of a convention business is characterized in that, may further comprise the steps:
(1) calling terminal soft switch under it sends conference request, and this soft switch is passed through the conference applications server and created meeting, and passes through real-time transmission protocol path that media server sets up and set up RTP with the meeting application server and be connected;
(2) calling terminal soft switch under it sends and invites terminal called to add the request of meeting, and this soft switch is passed through the conference applications server and invited terminal called to add meeting.
2. the implementation method of convention business as claimed in claim 1 is characterized in that, described step (1) further may further comprise the steps:
(1.1) calling terminal sends the soft switch of request for conference to its ownership, and this soft switch sends to the conference applications server by Session Initiation Protocol and creates request for conference;
(1.2) described conference applications server generates Conference ID;
(1.3) Conference ID of request for conference to above-mentioned generation initiated in the described soft switch of conference applications server notification again;
(1.4) described soft switch is initiated request for conference again to described Conference ID;
(1.5) the conference applications server is set up RTP with described soft switch then and is connected to media server application meeting real-time transmission protocol path.
3. the implementation method of convention business as claimed in claim 2 is characterized in that, if the conference applications server generates the Conference ID failure, then returns failed message to described soft switch and take out stitches in the described step (1), finishes this convention business.
4. the implementation method of convention business as claimed in claim 1 is characterized in that, described step (2) further may further comprise the steps:
(2.11) calling terminal soft switch under it sends and invites terminal called to add the request of meeting, and this soft switch sends to the conference applications server again invites terminal called to add the request of meeting;
(2.12) described conference applications server returns the soft switch of response message under the calling terminal, and initiates the soft switch of request for conference under the terminal called;
(2.13) terminal called is replied, and the soft switch under it is returned response message to the conference applications server, sets up RTP with it and connects;
(2.14) the soft switch terminal called under the conference applications server notification calling terminal has added meeting.
5. the implementation method of convention business as claimed in claim 1 is characterized in that, described step (2) further may further comprise the steps:
(2.21) calling terminal soft switch under it sends and invites terminal called to add the request of meeting, and this soft switch sends to the soft switch that terminal called belonged to again invites terminal called to add the request of meeting;
(2.22) response message is returned in the soft switch that terminal called belonged to, and the notice terminal called, and terminal called accepts request then, and soft switch sends request for conference under it, and this soft switch is initiated request for conference again to the meeting application server;
(2.23) soft switch that terminal called belonged to is set up RTP with the meeting application server and is connected;
(2.24) the soft switch notice soft switch terminal called that calling terminal belonged to that terminal called belonged to has added meeting;
(2.25) the soft switch terminal called that belonged to of conference applications server notification calling terminal has added meeting.
6. a soft switching communication system of realizing convention business is characterized in that, comprising: calling terminal and the soft switch that is belonged to thereof, terminal called and the soft switch that is belonged to thereof, conference applications server, media server; Described soft switch is passed through initial session protocol with the meeting application server and is linked to each other, and described media server links to each other with the meeting application server;
The soft switch that described calling terminal belonged to is used to receive the request for conference of calling terminal, initiates to create request for conference to the conference applications server, sets up RTP with it and is connected; The invitation terminal called that receives calling terminal adds the request of meeting, and the soft switch that is belonged to conference applications server or terminal called sends this request;
The soft switch that described terminal called belonged to is used for when terminal called is accepted the invitation, and sets up RTP with the meeting application server and is connected;
Described conference applications server is used to generate Conference ID, to media server application meeting real-time transmission protocol path;
Described media server is used to realize the media function of meeting.
7. the soft switching communication system of realization convention business as claimed in claim 6 is characterized in that, described conference applications server comprises meeting generating apparatus and meeting control device; Described meeting generating apparatus is used to generate Conference ID, and described meeting control device is used to control meeting.
8. the soft switching communication system of realization convention business as claimed in claim 6 is characterized in that, described calling terminal and terminal called are session initiation protocol terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101242915A CN101159787B (en) | 2007-11-07 | 2007-11-07 | Soft switching communication system and method of implementing session service |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101242915A CN101159787B (en) | 2007-11-07 | 2007-11-07 | Soft switching communication system and method of implementing session service |
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| Publication Number | Publication Date |
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| CN101159787A true CN101159787A (en) | 2008-04-09 |
| CN101159787B CN101159787B (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101374175B (en) * | 2008-10-16 | 2011-05-11 | 中兴通讯股份有限公司 | Admission method and system for audio/video conference of IMS/NGN network |
| CN103595704A (en) * | 2013-08-29 | 2014-02-19 | 国家电网公司 | Enterprise communication application one-key calling method for VOIP |
| CN103875232A (en) * | 2011-10-13 | 2014-06-18 | 瑞典爱立信有限公司 | Apparatus and method for conferencing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1889609B (en) * | 2005-06-30 | 2010-05-05 | 华为技术有限公司 | Telephone conference realizing method |
| CN100484013C (en) * | 2007-03-02 | 2009-04-29 | 华为技术有限公司 | Access equipment, conference access method and conference service system |
-
2007
- 2007-11-07 CN CN2007101242915A patent/CN101159787B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101374175B (en) * | 2008-10-16 | 2011-05-11 | 中兴通讯股份有限公司 | Admission method and system for audio/video conference of IMS/NGN network |
| CN103875232A (en) * | 2011-10-13 | 2014-06-18 | 瑞典爱立信有限公司 | Apparatus and method for conferencing |
| CN103875232B (en) * | 2011-10-13 | 2016-08-17 | 瑞典爱立信有限公司 | Meeting method and apparatus |
| US9426188B2 (en) | 2011-10-13 | 2016-08-23 | Telefonaktiebolaget L M Ericsson (Publ) | Apparatus and method for conferencing |
| CN103595704A (en) * | 2013-08-29 | 2014-02-19 | 国家电网公司 | Enterprise communication application one-key calling method for VOIP |
| CN103595704B (en) * | 2013-08-29 | 2016-06-29 | 国家电网公司 | A kind of enterprise communication towards VOIP applies a key method of calling |
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| Publication number | Publication date |
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| CN101159787B (en) | 2010-10-13 |
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