CN100499708C - Method for playing individualized ring back tone for calling terminal in low speed - Google Patents
Method for playing individualized ring back tone for calling terminal in low speed Download PDFInfo
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- CN100499708C CN100499708C CNB2005101210629A CN200510121062A CN100499708C CN 100499708 C CN100499708 C CN 100499708C CN B2005101210629 A CNB2005101210629 A CN B2005101210629A CN 200510121062 A CN200510121062 A CN 200510121062A CN 100499708 C CN100499708 C CN 100499708C
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- calling terminal
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- back tone
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Abstract
The method comprises: a) after low speed call terminal at calling party sends out a request for building call connection and before the building a call connection with called party, a media capacity negotiation is mad through soft switch device; b) the called party sends an individualized ring-back tone to the low speed calling terminal by using the negotiated media capacity. With earlier building H.245 connection, implements acquisition of media capacity, IP address and port number from the calling party at ringing stage.
Description
Technical field
The present invention relates to the communications field, more particularly, relate to a kind of method of playing individualized ring back tone for calling terminal in low speed.
Background technology
NGN (Next Generation Network, the next generation network) system that with the soft switch is core is an open system.Soft switch can provide for example SS 7 (Signalling SystemNo.7 towards other networks, No.7 signalling system), INAP (Intelligent Network Application Protocol, Intelligent Network Application Protocol), H.323, SIP (Session Initiation Protocol, SIP) various protocols such as, realize NGN and PSTN (Public Switching Telephone Network, public switch telephone network), IN (Intelligent Network, intelligent network), H.323, the communication of networks such as SIP, thereby realize various individual business, for example Customized Ring Back Tone.
H.323 be the multimedia communication standard that is used for packet switching network, its also relate to call out control (callcontrol), multimedia administration, Bandwidth Management and and diverse network between interface.In calling out control, H.323 agreement is divided into short calling (faststart) and calls out (normalstart) two kinds of call flows at a slow speed.
With ISUP (ISDN User Part, ISUP) networking situation is an example: if the calling party is short calling terminal H.323, then in Setup message, can carry media capability, IP address and port numbers that caller is supported, soft switch can be with caller medium and MG (Media Gateway like this, media gateway) negotiating media, obtain public ability, indication MG converts the ring-back tone of PSTN to public ability, and is sent to the IP address and the port of caller.
As shown in Figure 1, if the calling party is calling terminal (wherein the interface signaling of soft switch and PSTN interface is ISUP) at a slow speed, then at first make a call to soft switch and set up request " Setup " (call setup mode at a slow speed) by calling terminal at a slow speed, soft switch adds media gateway (MG) by adding message " ADD " with call number and called number, and returns answer message " ADD Reply " by media gateway to soft switch.
Soft switch sends IAM (Initial Address Message, initial address message) making a call to the PSTN interface then, and the PSTN interface returns ACM (Address CompleteMessage, Address Complete Message) to soft switch at one's leisure.Because media capability, IP address and port numbers that calling terminal does not have caller to support in Setup message, MG (Media Gateway, media gateway) do not know that the ring-back tone that PSTN is sent converts the RTP of what form (Realtime Transfer Protocol to, RTP) Media Stream, do not know this mails to ring-back tone RTP Media Stream where yet, therefore can't realize the Customized Ring Back Tone broadcast.
Soft switch is sent out ring-back tone by (Alerting) message of signaling to calling terminal.If this moment is callee's off-hook, then the PSTN interface is beamed back ANM (Answer Message to soft switch, response message), soft switch sends to calling terminal and connects (connect) message, the calling and called both sides begin conversation, and carry out principal and subordinate's decision, capabilities exchange, open the H.245 process of standards such as logical channel, thereby obtain both sides' ability.Yet this moment, principal and subordinate both sides entered communication process.
For Session Initiation Protocol also is identical situation: can't obtain H.323 media capability, IP address and the port numbers of calling terminal at a slow speed at ringing phase, just can't play Customized Ring Back Tone to caller.
Summary of the invention
The technical problem to be solved in the present invention is, can't play the defective of Customized Ring Back Tone at the above-mentioned calling terminal at a slow speed of prior art, and a kind of method of playing individualized ring back tone for calling terminal in low speed is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of method of playing individualized ring back tone for calling terminal in low speed, may further comprise the steps:
(a) by Softswitch carry out media capability negotiation before conversation is connected in caller after calling terminal sends setup requests at a slow speed and setting up with the callee, described media capability negotiation content comprises: caller is media capability, IP address and the port numbers of calling terminal at a slow speed;
(b) callee's media capability of using negotiation to caller at a slow speed calling terminal send Customized Ring Back Tone.
In the method for playing individualized ring back tone for calling terminal in low speed of the present invention, connect caller at a slow speed the soft switch of calling terminal by ISUP and the PSTN interface connection that is connected the callee, in described step (a), media capability negotiation is carried out in described caller H.245 process and the Softswitch of calling terminal by standard at a slow speed.
In the method for playing individualized ring back tone for calling terminal in low speed of the present invention, described step (a) comprising:
(a1) in caller after calling terminal sends setup requests at a slow speed, the PSTN interface sends Address Complete Message to soft switch, comprises in the described Address Complete Message to the caller order of calling terminal playing RBT at a slow speed;
(a2) soft switch to caller at a slow speed calling terminal send signalling message, described signalling message includes to the caller order of calling terminal playing RBT and the H.254 signaling address of soft switch at a slow speed;
(a3) caller at a slow speed calling terminal and soft switch set up and H.245 be connected, and carry out media capability negotiation by the H.245 process of standard.
In the method for playing individualized ring back tone for calling terminal in low speed of the present invention, the H.245 process of described standard comprises principal and subordinate's decision, capabilities exchange, opens the logical channel operation.
In the method for playing individualized ring back tone for calling terminal in low speed of the present invention, described step (b) comprising:
(b1) soft switch makes media gateway obtain caller media capability, IP address and the port numbers of calling terminal at a slow speed according to the media resource information of media capability negotiation results modification media gateway;
(b2) media gateway with the PSTN interface to caller at a slow speed the ring-back tone that sends of calling terminal be converted to the caller form supported of calling terminal at a slow speed, and send to caller at a slow speed calling terminal play.
Perhaps in the method for playing individualized ring back tone for calling terminal in low speed of the present invention, the connection caller soft switch of calling terminal at a slow speed is connected with the Customized Ring Back Tone server by the SIP connection, in described step (a), media capability negotiation is carried out in described caller H.245 process and the Softswitch of calling terminal by standard at a slow speed.
In the method for playing individualized ring back tone for calling terminal in low speed of the present invention, described step (a) may further comprise the steps:
(a1) in caller after calling terminal sends setup requests at a slow speed, the Customized Ring Back Tone server sends 183 message to soft switch, comprises in described 183 message to the caller order of calling terminal playing RBT at a slow speed;
(a2) soft switch to caller at a slow speed calling terminal send signalling message, described signalling message includes to the caller order of calling terminal playing RBT and the H.254 signaling address of soft switch at a slow speed;
(a3) caller at a slow speed calling terminal and soft switch set up and H.245 be connected, and carry out media capability negotiation by the H.245 process of standard.
In the method for playing individualized ring back tone for calling terminal in low speed of the present invention, described step (b) may further comprise the steps:
(b1) soft switch is fed back the caller at a slow speed media capability of calling terminal by PRACK message to the callee according to the media capability negotiation result, makes the callee obtain caller media capability, IP address and the port numbers of calling terminal at a slow speed;
(b2) callee's media capability through consultation to caller at a slow speed calling terminal send Customized Ring Back Tone.
In the method for playing individualized ring back tone for calling terminal in low speed of the present invention, the connection caller soft switch of calling terminal at a slow speed is connected with the callee by SIP, described callee comprises terminal called and Customized Ring Back Tone server, in step (b), the media capability that the Customized Ring Back Tone server use to be consulted to caller at a slow speed calling terminal send it back Customized Ring Back Tone.
In the method for playing individualized ring back tone for calling terminal in low speed of the present invention, connect caller at a slow speed the soft switch of calling terminal by ISUP and the PSTN interface connection that is connected the callee, described callee comprises terminal called and Customized Ring Back Tone server, in step (b), after media gateway is according to the ability conversion of consulting, send it back caller calling terminal at a slow speed from the Customized Ring Back Tone of callee's Customized Ring Back Tone server.
The method of playing individualized ring back tone for calling terminal in low speed of the present invention connects by setting up H.245 ahead of time, has realized obtaining caller media capability, IP address and port numbers at ringing phase, and has play Customized Ring Back Tone at ringing phase to caller.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the call flow schematic diagram of existing calling terminal at a slow speed;
Fig. 2 is the schematic flow sheet of method first embodiment of playing individualized ring back tone for calling terminal in low speed of the present invention;
Fig. 3 is the schematic flow sheet of method second embodiment of playing individualized ring back tone for calling terminal in low speed of the present invention.
Embodiment
As shown in Figure 2, in first embodiment of playing individualized ring back tone for calling terminal in low speed method of the present invention, H.323 the data passes between calling terminal and soft switch is followed H.323 agreement at a slow speed, soft switch is communicated by letter by ISDN User Part with the PSTN interface, soft switch and media gateway (MG) are passed through H.248 protocol communication, and callee's (not shown) inserts said system by the PSTN interface.In the present embodiment, the callee includes Customized Ring Back Tone server and terminal called.
At first, by the calling party H.323 at a slow speed calling terminal send setup requests (Setup) message to soft switch.Soft switch receive behind this call setup request message by create related (ADD) message with the calling party H.323 at a slow speed calling terminal add on the media gateway, reserve RTP (Realtime Transfer Protocol, RTP) resource with the control media gateway.Then, media gateway is returned one to soft switch and is created associated response (ADD Reply) message, and prompting creates that association messages has been received and grammer is correct.This establishment associated response process is followed H.248 agreement.
Soft switch sends IAM (Initial Address Message to the PSTN interface then, initial address message) to make a call, and the PSTN interface returns ACM (AddressComplete Message to soft switch when it is idle, Address Complete Message), when the ACM signal that the PSTN interface beams back is received in soft switch, called terminal ringing.In the present embodiment, Address Complete Message carries the order (parameter) that is prompted to calling party's playing RBT, orders by soft switch by this and sets up H.245 connection.
Soft switch is after receiving above-mentioned Address Complete Message, and by (Alerting) message of signaling, showing needs to send ring-back tone to the calling party.In the present embodiment, signalling message is carried the H.245 signaling address of soft switch.
Calling party's calling terminal is at a slow speed set up by SYN message, SYNACK message, ACK message with soft switch and H.245 is connected (process that this process connects for establishment of standard TCP).Then, determining affirmation (MasterSlaveDeterminAcknowledge) message etc. to carry out the principal and subordinate by principal and subordinate's decision (MasterSlaveDetermin) message, principal and subordinate between calling terminal and soft switch at a slow speed confirms; Confirm media capability (TerminalCapabilitySet) message by calling terminal media capability (TerminalCapabilitySet) message, media gateway, calling terminal media capability (TerminalCapabilitySet) message, media gateway terminal media ability acknowledge message (TerminalCapabilitySet) wait carries out media capability exchange negotiation; By opening logical channel (OpenLogicalChannel) message, opening logical channel and confirm that (OpenLogicalChannelAcknowledge) message etc. opens logical channel and consult.
After the above-mentioned negotiation success, soft switch will be revised the media resource information of media gateway, make media gateway obtain caller media capability, IP address and the port numbers of calling terminal at a slow speed.Afterwards, media gateway will be converted to the caller discernible form of calling terminal at a slow speed from the signal of telecommunication (Customized Ring Back Tone) of PSTN interface, and send to caller calling terminal at a slow speed, realize the broadcast of Customized Ring Back Tone.
At last, if callee's off-hook, then the PSTN interface is beamed back ANM (Answer Message, response message) to soft switch, and soft switch sends to calling terminal and connects (connect) message, and the calling and called both sides begin conversation.
As shown in Figure 3, in second embodiment of playing individualized ring back tone for calling terminal in low speed method of the present invention, H.323 the data passes between calling terminal and soft switch is followed H.323 agreement at a slow speed, the callee inserts soft switch by SIP (Session Initial Protocol, initial session protocol).In the present embodiment, the callee includes Customized Ring Back Tone server (promptly serving the provider) and terminal called.
Similar with first embodiment, in the present embodiment, at first the calling terminal at a slow speed by the calling party sends call setup request message to soft switch, soft switch is initiated initial call by inviting (invite) message to serve provider (callee) to playing RBT, serves the provider and carries media information to soft switch by 183 message.
Soft switch uses the media capability of the Customized Ring Back Tone server in 183 message and calling party's calling terminal at a slow speed to carry out media negotiation.Reciprocal process among this media consultation process and first embodiment is similar, all is the H.245 process of standard.
After the media negotiation success, return the media capability of calling party's calling terminal at a slow speed by PRACK message to serving the provider, thereby callee's Customized Ring Back Tone server can use corresponding media capability to send Customized Ring Back Tone, realizes the broadcast of Customized Ring Back Tone.
In the above-described embodiment, H.245 the address is not limited to be carried by (Alerting) message of signaling, also can carry by setup requests (setup) message, call progress (CallProceeding) message or function (fccility) message, thereby H.245 soft switch is set up with calling party's (comprising terminal, gateway, gatekeeper) ahead of time is connected, be implemented in media capability, IP address and port numbers that ringing phase obtains caller, and play Customized Ring Back Tone to calling terminal at ringing phase.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of method of playing individualized ring back tone for calling terminal in low speed is characterized in that, may further comprise the steps:
(a) by Softswitch carry out media capability negotiation before conversation is connected in caller after calling terminal sends setup requests at a slow speed and setting up with the callee, described media capability negotiation content comprises: caller is media capability, IP address and the port numbers of calling terminal at a slow speed;
(b) callee's media capability of using negotiation to caller at a slow speed calling terminal send it back Customized Ring Back Tone.
2, the method for playing individualized ring back tone for calling terminal in low speed according to claim 1, it is characterized in that, connect caller at a slow speed the soft switch of calling terminal by ISUP and the PSTN interface connection that is connected the callee, in described step (a), media capability negotiation is carried out in described caller H.245 process and the Softswitch of calling terminal by standard at a slow speed.
3, the method for playing individualized ring back tone for calling terminal in low speed according to claim 2 is characterized in that, described step (a) comprising:
(a1) in caller after calling terminal sends setup requests at a slow speed, the PSTN interface sends Address Complete Message to soft switch, comprises in the described Address Complete Message to the caller order of calling terminal playing RBT at a slow speed;
(a2) soft switch to caller at a slow speed calling terminal send signalling message, described signalling message includes to the caller order of calling terminal playing RBT and the H.245 signaling address of soft switch at a slow speed;
(a3) caller at a slow speed calling terminal and soft switch set up and H.245 be connected, and carry out media capability negotiation by the H.245 process of standard.
According to the method for claim 2 or 3 described playing individualized ring back tone for calling terminal in low speed, it is characterized in that 4, the H.245 process of described standard comprises principal and subordinate's decision, capabilities exchange, opens the logical channel operation.
According to the method for claim 2 or 3 described playing individualized ring back tone for calling terminal in low speed, it is characterized in that 5, described step (b) comprising:
(b1) soft switch makes media gateway obtain caller media capability, IP address and the port numbers of calling terminal at a slow speed according to the media resource information of media capability negotiation results modification media gateway;
(b2) media gateway with the PSTN interface to caller at a slow speed the ring-back tone that sends of calling terminal be converted to the caller form supported of calling terminal at a slow speed, and send to caller at a slow speed calling terminal play.
6, the method for playing individualized ring back tone for calling terminal in low speed according to claim 1, it is characterized in that, the connection caller soft switch of calling terminal at a slow speed is connected with the Customized Ring Back Tone server by the SIP connection, in described step (a), media capability negotiation is carried out in described caller H.245 process and the Softswitch of calling terminal by standard at a slow speed.
7, the method for playing individualized ring back tone for calling terminal in low speed according to claim 6 is characterized in that, described step (a) may further comprise the steps:
(a1) in caller after calling terminal sends setup requests at a slow speed, the Customized Ring Back Tone server sends 183 message to soft switch, comprises in described 183 message to the caller order of calling terminal playing RBT at a slow speed;
(a2) soft switch to caller at a slow speed calling terminal send signalling message, described signalling message includes to the caller order of calling terminal playing RBT and the H.245 signaling address of soft switch at a slow speed;
(a3) caller at a slow speed calling terminal and soft switch set up and H.245 be connected, and carry out media capability negotiation by the H.245 process of standard.
8, the method for playing individualized ring back tone for calling terminal in low speed according to claim 6 is characterized in that, described step (b) may further comprise the steps:
(b1) soft switch is fed back the caller at a slow speed media capability of calling terminal by PRACK message to the callee according to the media capability negotiation result, makes the callee obtain caller media capability, IP address and the port numbers of calling terminal at a slow speed;
(b2) callee's media capability through consultation to caller at a slow speed calling terminal send Customized Ring Back Tone.
9, the method for playing individualized ring back tone for calling terminal in low speed according to claim 1, it is characterized in that, the connection caller soft switch of calling terminal at a slow speed is connected with the callee by SIP, described callee comprises terminal called and Customized Ring Back Tone server, in step (b), the media capability that the Customized Ring Back Tone server use to be consulted to caller at a slow speed calling terminal send it back Customized Ring Back Tone.
10, the method for playing individualized ring back tone for calling terminal in low speed according to claim 1, it is characterized in that, connect caller at a slow speed the soft switch of calling terminal by ISUP and the PSTN interface connection that is connected the callee, described callee comprises terminal called and Customized Ring Back Tone server, in step (b), after media gateway is according to the ability conversion of consulting, send it back caller calling terminal at a slow speed from the Customized Ring Back Tone of callee's Customized Ring Back Tone server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101210629A CN100499708C (en) | 2005-12-20 | 2005-12-20 | Method for playing individualized ring back tone for calling terminal in low speed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101210629A CN100499708C (en) | 2005-12-20 | 2005-12-20 | Method for playing individualized ring back tone for calling terminal in low speed |
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| Publication Number | Publication Date |
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| CN1874373A CN1874373A (en) | 2006-12-06 |
| CN100499708C true CN100499708C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101210629A Expired - Fee Related CN100499708C (en) | 2005-12-20 | 2005-12-20 | Method for playing individualized ring back tone for calling terminal in low speed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100531271C (en) | 2007-03-31 | 2009-08-19 | 华为技术有限公司 | Call method and system for video telephone |
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Granted publication date: 20090610 Termination date: 20121220 |