WO2007053981A1 - A method for implementing the media switch in the voice service of the h.323 protocol - Google Patents

A method for implementing the media switch in the voice service of the h.323 protocol Download PDF

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Publication number
WO2007053981A1
WO2007053981A1 PCT/CN2005/001910 CN2005001910W WO2007053981A1 WO 2007053981 A1 WO2007053981 A1 WO 2007053981A1 CN 2005001910 W CN2005001910 W CN 2005001910W WO 2007053981 A1 WO2007053981 A1 WO 2007053981A1
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WIPO (PCT)
Prior art keywords
media
step
control device
message
soft switch
Prior art date
Application number
PCT/CN2005/001910
Other languages
French (fr)
Chinese (zh)
Inventor
Qiaoxia Wu
Yongdong Pan
Gaofeng Fan
Original Assignee
Zte Corporation
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Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to PCT/CN2005/001910 priority Critical patent/WO2007053981A1/en
Publication of WO2007053981A1 publication Critical patent/WO2007053981A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00
    • H04L29/02Communication control; Communication processing
    • H04L29/06Communication control; Communication processing characterised by a protocol
    • H04L29/0602Protocols characterised by their application
    • H04L29/06027Protocols for multimedia communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1003Signalling or session protocols
    • H04L65/1009H.323

Abstract

A method for implementing the media switch in the voice service of the H.323 protocol of the present invention ,in which the process of the media switch is initiated by the softswitch control equipment, the type of the media switch is the voice media and the switched terminal is the H.323 terminal, performs the flow of the media switch corporately needed in a plurality of the value added service by the negotiation of the H.245 media control signaling, and in the media negotiation, it performs the media negotiation using the virtual media in the case that it does not know the partner media. It applies the media switch of fastly calling and slowly calling user without the influence of the type of the interconnected procotol, and applies the case of the media switch needed in a plurality of the implementation of value added service.

Description

TECHNICAL FIELD media implemented voice service switching one kind of H.323 protocol

The present invention belongs to the field of data communication, to a Softswitch system ', 1323 media protocols implemented method of switching, and in particular to implement voice service is one kind of the H.323 media switching. Background technique

Next Generation Network (Next Generation Network, NGN network for short) and soft-switching system provides a lot of variety of value-added services based on the traditional telephony voice services on which the H.323 protocol in achieving these value-added services, often temporarily Close open original media channel terminal, media and transferred to a new point (such as a media server providing a voice service fine) case.

Letter H.450.X series through a series of protocol encapsulated in H450.1 H.225 call related supplementary service signaling message (H450.1 SupplementaryService) application protocol data unit (Application Protocol Data Unit, abbreviated APDU) and their definitions so that process is completed between the media and value-added services involved in the handover process, but the application H.450.X series of agreements for each business need to define a set of processes, and the need to control and terminal devices support H.450.X protocols, more complex .

Currently, H.323 protocol suite of media control protocol is H.245 protocol, it can be done through the media negotiation between the endpoints H.245 procedures. V2 and H.323 protocol version introduces the concept of fast call, allowing the media negotiation at the same time through rapid call setup is completed the call (faststart) unit. H.323 protocol version V2 rerouting also introduced to third empty set and terminal capabilities (Terminal Capability Set NULL) (hereinafter referred to TCSNULL) using messages. SUMMARY

In view of the above, the present invention is to solve is how to use the H.245 media control signaling defined media negotiation completion of various value-added services in the common needs of the media switching processes, and consider fast, slow call to the H.323 protocol switching media Impact.

To this end, an object of the present invention is to realize a method to provide a media switching voice service in the H.323 protocol, the H.245 control signaling through the media negotiation, media complete the communication terminal is transferred from the primary endpoint to a new endpoint, flexible and easy to achieve a variety of value-added services required by the media switching process, while also considering the effect of fast and slow call procedure call protocol interoperability and cross-media switching process.

To achieve the above object, a method to realize the voice service switching one kind of media H.323 protocol of the present invention, for fast calling call type, wherein the handover procedure is initiated by the media soft switch control device, the switching of the type of media voice media, and is switched H.323 terminal is a terminal, the method comprising the steps of:

Step 1: Start (Setup) message with the calling device sends the media to the calling soft switch control; Step 2: As needed for certain services shield called to the caller before the called media stream hook, the said soft switch the control device may be configured media false, false starts and the called media transmission belt (Setup) message;

Step 3: said soft switch device controlling the steering without ringing said caller transmitted through the front medium (Alerting) message with the media and the media server is connected (Connect) message, and real-time transport protocol (Real-time Transport Protocol) (hereinafter referred to as RTP) to discharge said caller calling tone.

Step 4: said called hook, it transmits a connection (Connect) message to the soft switch control device;

Step 5: said soft switch control device determines the connection (Connect) message with or without called media, and if yes, the called rapid type described above, step 7; otherwise, the above-described type called a slow, step 6;

Step 6: said soft switch control device and the called parties via H.245 media negotiation process, and said soft switch control device called media obtained above;

Step Ί: said soft switch control device via H.245 media control signaling said caller to said called switching medium;

Step 8: said soft switch control device via H.245 control signaling said called the media to the media switching said caller.

Step 9: said caller and said incoming call.

Wherein, in step 6, said soft switch control device and said media both performed by the called H.245 negotiation process is performed using the media negotiation and said called false medium.

In addition, the need to perform the following steps before performing the above-described steps 7:

It said caller and said soft switch control device in turn two-way exchange of master slave determination and ability, and said caller and said soft switch control both devices can receive the acknowledgment message.

And, when the called rapid type, have to perform the steps of the above steps prior to 8: said called soft switch control device and said bidirectional sequentially determined from the master exchange and capacity, and said soft switch and said called control both devices can receive the acknowledgment message.

Into a ho, the above step 7 include the following steps: Step 701: said soft switch control device with transmitting the handover request type of media type (RequestMode) message to the calling party;

Step 702: After receiving the request for said caller type (RequestMode) message to the soft switch control device replies to requests to confirm the type (RequestModeAck) message;

Step 703: said caller and said soft switch control device via the bidirectional logical channel is closed

(CloseLogicalChannel) and closing the logical channel acknowledgment message (CloseLogicalChannelAck) message to close a respective opening media channel;

Step 704: said caller and said soft switch control device through a bidirectional open logical channel (the OpenLogicalChannel) and an open logical channel acknowledgment message (an OpenLogicalChannelAck) required to open a media channel message.

Further, the above step 8 ho ho includes the following step:

Step 801: said soft switch control device transmits to the called terminal capability set empty (TerminalCapabilitySetNULL) message;

Step 802: the terminal receives said called after setting the empty capacity (TerminalCapabilitySetNULL) message to the soft switch control device to reply acknowledgment terminal capability set (TerminalCapabilitySetAck) message;

Step 803: the called party and above said soft switch control device via the bidirectional logical channel is closed (closeLogicalChannel) and closing the logical channel acknowledgment message (CloseLogicalChannelAck) message to close a respective opening media channel;

Step 804: said soft switch control device receiving the terminal capability setting confirmation

(TerminalCapabilitySetAck) message, and confirms the above-described medium passage is fully closed, set (TerminalCapabilitySet) message to a non-empty terminal capability of the media type after the switching-called transmission;

Step 805: After receiving the non-empty said called terminal capability set (TerminalCapabilitySet) message, and the ability to complete the two-way soft switch control device of the above-described exchange process, and controls said soft switch device to respond to non-empty set terminal capability acknowledgment ( TerminalCapabilitySetAck) message; step 806: after said soft switch control device receives a non-empty capability of the called terminal setting confirmation reply (TerminalCapabilitySetAck) message, and initiating said called bidirectional exchange capacity and the master-slave determination operation;

Step 807: the called party and above said soft switch control device through a bidirectional open logical channel (the OpenLogicalChannel) and an open logical channel acknowledgment message (an OpenLogicalChannelAck) required to open a media channel message.

To achieve the above object, a method to realize the voice service switching one kind of media H.323 protocol of the present invention, for slow calling call type, wherein the medium handover process initiated by the soft switch control device, handover media the voice media type, and is switched H.323 terminal is a terminal, the method comprising the steps of: '

Step 1: calling softswitch device transmits to the control without starter calling media (Setup) message; ho step 2: said soft switch control device without starter medium (Setup) message to the called transmission; Step 3: The above softswitch steering control apparatus said caller sending a ring (Alerting) message and the media without the media server is connected (connect) message without the media through the front;

Step 4: said caller and said soft switch control device by both H.245 media negotiation process, and said calling party to obtain the above media and the media server through the RTP listen to the call tone; ho step 5: said called hook to said soft switch control device connected to the called party without the transmission medium (connect) message; step 6: said soft switch control device is configured false medium;

Step 7: said soft switch control device and said called parties via H.245 media negotiation process, and said soft switch control device obtains the called media;

Step 8: said soft switch control device via H.245 media control signaling said caller to said called switching medium;

Step 9: said soft switch control device via H.245 media control signaling to said called media switching said caller;

Step 10: said caller and said incoming call.

Wherein, in the step 7, said soft switch control device and said media both performed by the called H.245 negotiation process is performed using the media negotiation and said called false medium.

Further, the above step 8 includes the following steps:

Step 801: said soft switch control device to transmit the calling party with the media type handover request type (RequestMode) message;

Step 802: After receiving the request for said caller type (RequestMode) message to the soft switch control device replies to requests to confirm the type (RequestModeAck) message;

Step 803: said caller and said soft switch control device via the bidirectional logical channel is closed (closeLogicalChannel) and closing the logical channel acknowledgment message (CloseLogicalChannelAck) message to close a respective opening media channel;

Step 804: said caller and said soft switch control device through a bidirectional open logical channel (the OpenLogicalChannel) and an open logical channel acknowledgment message (OpenLogicalChannel Ack) message is required to open a media channel.

Further, the above step 9 include the following steps: Step 901: setting said soft switch control device empty (TerminalCapabilitySetNULL) message transmitted to the called terminal capability;

Step 902: the terminal receives said called after setting the empty capacity (TerminalCapabilitySetNULL) message to the soft switch control device to reply acknowledgment terminal capability set (TerminalCapabiHtySetAck) message;

Step 903: the called party and above said soft switch control device via the bidirectional logical channel is closed (closeLogicalChannel) and closing the logical channel acknowledgment message (CloseLogicalChannelAck) message to close a respective opening media channel;

Step 904: said soft switch control device receiving the setting terminal capability acknowledgment (TerminalCapabilitySetAck) message, and confirms the above-described medium passage is completely closed, to said non-empty terminal capability set of the media type after the switching-called transmission (TerminalCapabilitySet )news;

Step 905: After receiving the non-empty said called terminal capability set (TerminalCapabilitySet) message, and the ability to complete the two-way soft switch control device of the above-described exchange process, and controls said soft switch device to respond to non-empty set terminal capability acknowledgment ( TerminalCapabilitySetAck) message; step 906: after said soft switch control device receives a non-empty capability of the called terminal setting confirmation reply (TerminalCapabilitySetAck) message, and initiating said called bidirectional switching operations from the master and the capacity is determined; '

Step 907: the called party and above said soft switch control device (the OpenLogicalChannel) message and playing Jian logical channel acknowledgment (an OpenLogicalChannelAck) message required to open a media channel by a bidirectional open logical channel.

Wherein the caller calling the media, including at least supported media types, calling the media Internet Protocol (Internet Protocol ^ hereinafter referred to as IP) address and port number of the calling media and other media information; for fast call type calling the fake media the same type of media and the media type supported by said calling party, and a false IP address of the media unreachable IP address (e.g. 127.0.0.1), port number may optionally false medium; slow call type for calling, false medium media types include various commonly used media types, IP addresses and false medium is unreachable IP address (e.g. 127.0.0.1), port number may optionally false medium; medium of the media server and the media includes at least CRBT tone media ; the above-described operation by the H.245 media negotiation procedure comprises at least a master-slave determination operation, the operation and playing capability exchange operation Jian media channel; said call tone and a tone color ring comprising at least; and the called media support comprises at least a called media type, called media called media IP address and port number information media.

Further, in order to use different compatible H.245 media control signaling handover media, said soft switch control device can be switched to a different type of terminal or a different terminal nodes is configured for switching the like, to match the above-described switching one of the two media flow.

'In addition, the method of the present invention can also be intelligent service control device in place of the soft switch control device to initiate the process of switching the above-described media.

The present invention employs H.245 media control signaling protocol H.323 complete media voice services handover procedure, the media negotiation, media unknown prosthesis using other media case where the media negotiation is completed, a call for quick and slow switching speed calling user's media, not affect the protocol type of cross, may be used when required to achieve various value-added services switching media.

To make the above and other objects, features and advantages of the present invention can be more fully understood by reading the following preferred embodiments and with the accompanying drawings, described in detail below. BRIEF DESCRIPTION

The method of FIG. 1 of the present invention when the calling process as a main schematic fast call type; FIG. 2 of the present invention, when the calling method is slow main flow schematic of call types; FIG. 3 a preferred embodiment of the present invention, EXAMPLE fast Link number H.323 user calling CRBT telecommunication service process, wherein Link number binding hook fast H.323 user;

FIG 4 an embodiment Fast Link Number H.323 user calling CRBT preferred telecommunication service flow embodiment of the present invention, wherein Link Number slow binding hook H.323 user;

FIG 5 an embodiment slow H.323 user calls Link Number telecommunication service CRBT preferred embodiment of the process of the present invention, wherein the 1st through the binding hook H.323 user. detailed description

Telecommunication service allows more end-user bound to the same Link Number, when a user calls the Link Number, a plurality of users simultaneously binding ring, wherein one of the user picks up the ringing, call completion between the hook and the calling user, the call release of other end users.

Below in connection with the realization of telecommunication service side H.323 protocol H.323 protocol specific implementation steps described medium of the present invention is a method of handover. Wherein the calling and called users may not be the same user in a softswitch, the call path may span other protocols and other types of control devices, the present invention focuses on H.323 protocol signaling flow side. For convenience of explanation, the embodiments are embodied in the IP address and the calling and called media types used in the examples, but the present invention is not limited to showing the content. In order to use the method in Example of the present invention to cover fewer embodiment, using more typical example, and the main different called handover signaling ho step 11245, the other value-added services switching media used in the present invention can also use the media switching method. The method of FIG. 1 of the present invention when the calling process is the main type of fast call schematic, Figure 3 Fast Link Number H.323 user calls the telecommunication service processes a preferred embodiment of the present invention, wherein a No. fast H.323 user through the binding hook, the media server through the discharge CRBT to the calling party. Please refer to FIGS. 1 and 3, which includes the following steps - a step 101, the calling soft switch control device to start transmission (Setup) message, wherein the media message with the calling party;

Step 102 and step 103, a plurality of said soft switch control device to the called user through the binding of the 1st transmit enable (Setup) message, wherein the message with a false medium, but the same type of media supported media types caller;

Step 104 and step 105, the plurality of simultaneous ringing the called party;

Step 106, said soft switch control device to said caller sending a ring (Alerting) message; Step 107, said soft switch control device transmits to the calling connection (Connect) message, wherein the ring back tone message with the media, i.e., media server media;

Step 108, the above-described calling CRBT heard by RTP, the voice media type is selected G711A; step 109 the called party picks up, the voice media type is selected G711U;

Step 110, the above-described release of other soft switch control devices call the called user;

Step 111, using H.245 media control signaling before the handover calling media, said calling party and said soft switch control device is determined from the two-way primary, both sides need to receive from the other main determining acknowledgment (MasterSlaveDeterminationAck) message;

Step 112, before using H.245 media control signaling handover calling media, said calling party and said soft switch control device into line bidirectional capability exchange, both sides need to receive the other terminal capability setting confirmation (TerminalCapabilitySetAck) message; step 113, said soft switch control device transmits to the calling request type (RequestMode) handover message calling media, wherein the media type is called handover media G711U;

After step 114 the calling party receiving the request type (RequestMode) message to the soft switch control device replies to requests to confirm the type (RequestModeAck) message;

Step 115, said calling party and said soft switch control device to close the side opening their respective voice media channel;

Step 116, said calling party and said soft switch control device opens both voice new media channel, wherein the media type is G711U, said caller at this time has been called media, RTP voice packet may be sent to the called party;

Step 117, before using H.245 media control signaling handover called media, said called soft switch control device and said bidirectional master-slave determination, both sides need to receive from the other main determining acknowledgment (MasterSlaveDeterminationAck) message;

Step 118, before using H.245 media control signaling handover called media, said called soft switch control device and said bidirectional switching capability, both sides need to receive the other set of terminal capability acknowledgment (TerminalCapabilitySetAck) message;

Step 119, said soft switch control device is set empty (TerminalCapabilitySet ULL) message transmitted to the called terminal capacity to suspend called media;

Step 120, it said called soft switch control device to reply to the confirmation terminal capability set (TerminalCapabilitySetAck) message;

Step 121, it said called soft switch control device and said each of the parties to close all media channels of the side opening; step 122, said soft switch control capability of the called terminal device receives setting confirmation (TerminalCapabilitySetAck) message, and confirms the original after all media channels are closed, the terminal transmits non-empty capability set (TerminalCapabilitySet) message to the called party, wherein the message includes a media type that is currently calling G711U;

Step 123, it said called soft switch control device to reply to the confirmation terminal capability set (TerminalCapabilitySetAck) message;

Step 124, it said called soft switch control device and said re-determined from a bi-directional master; step 125, the control apparatus transmits said called terminal capability set (TerminalCapabilitySet) message to the soft switch, wherein the message comprises a support for said called media type; step 126, said soft switch control device setting capability confirmation response terminal (TerminalCapabilitySetAck) message to the called party;

Step 127, it said called soft switch control device and said open voice new media channel, wherein the media type is G711U, said called at this time to obtain the calling media;

Step 128, the main incoming call.

Figure 4 Fast Link Number H.323 user calls the telecommunication service processes a preferred embodiment of the present invention, wherein the 1st through the binding hook slow H.323 user, by the media server to the calling put ring tones. Please refer to FIG. 1 and FIG. 4, which includes the following steps - steps 201 to 208 with step 101 to step 108, the calling CRBT heard;

Step 209, the called party off-hook, sending soft switch control device is connected to the (Connect) message, wherein the message without called media;

Step 210, it said called soft switch control device and said bidirectional master-slave determination; step 211 the called soft switch control device and said two-way capability exchange; step 212, said called parties and said soft switch control device open voice channel media, wherein the media type is G711U;

Step 213, the above-described release of other soft switch control devices call the called user;

Step 214 to step 219 with step 111 to step 116, the calling media from the media server to the called switch;

Step 220 to step 228 with step 119 to step 127, called media to the calling switching from false medium;.

Step 229, the main incoming call.

FIG 2 is slow when the calling call type main flow diagram of FIG. 5 shows an embodiment slow H.323 user calls the Link Number One preferred embodiment of the invention the business process through the method of the present invention, wherein the bound H323 One user through the hook, put through the media ring back tone to the calling server. Please refer to FIGS. 2 and 5, which includes the following steps:

Step 301, the calling soft switch control device to start transmission (Setup) message, wherein the message without calling media;

Steps 302 and 303, a plurality of said soft switch control device to the called user through binding One transmission start message (Setup) message, wherein the message without media;

Step 304 and step 305, the plurality of simultaneous ringing the called party;

Step 306, said soft switch control device to said caller sending a ring (Alerting) message; Step 307, said soft switch control device transmits to the calling connection (Connect) message; step 308 the calling party and said soft switch control from the master device determines the bidirectional; ho step 309, said calling party and said soft switch control device bidirectional capability exchange, wherein said soft switch control device transmits terminal capability set (TerminalCapabilitySet) a message comprising a media discharge CRBT media server type;

Step 310, said calling party and said soft switch control device opens both voice media channel, wherein the media type is selected G711A;

Step 311, the above-described calling CRBT heard;

Step 312 the called party picks up, to the soft switch control device transmits a connection (Connect) message, wherein the message without media;

Step 313, said called soft switch control device and said bidirectional master-slave determination; step 314 the called soft switch control device and said bidirectional switching capabilities, wherein said soft switch control device sends a terminal capability set ( TerminalCapabilitySet) message including various commonly used media types;

Step 315, it said called soft switch and said control device opens both voice media channel, wherein the media type is selected G711U;

Step 316, the above-described release of other soft switch control devices call the called user;

Step 317, all media types to be supported above the called party, IP address, port number, the media information is sent to the media said soft switch control device calling lateral, said soft switch control device sends a request type (RequestMode) handover message calling media, wherein said request type (RequestMode) message to a media type of said soft switch control device called common selected master one media type supported G711A;

Step 318 the calling soft switch control device to reply to the acknowledgment request type (RequestModeAck) message;

Step 319, said calling party and said soft switch control device to close the side opening their respective voice media channel; step 320, said calling party and said soft switch control device to play both speech Jian new media channel, wherein the media type is G711A, In this case it said calling party has been called media, RTP voice packet may be sent to the called party;

Step 321 to step 329 with step 119 to step 127, called media to the calling switching from false medium;

Step 330, the main incoming call.

Described in detail above operation of the present invention, but this is only an example of figurative cited for ease of understanding, not to be considered as limiting the scope of the present invention. Also, according to the aspect of the present invention and its preferred embodiments described embodiments may be made of various possible equivalent modifications or substitutions, and all such modifications or substitutions shall fall within the scope of the invention as claimed in claims.

Claims

Rights request
A method for realizing media switching voice service is one kind of H.323 protocol, call type for rapid caller, wherein the media wherein a handover procedure is initiated by the soft switch control device, the type of media is switched voice media , and is switched H.323 terminal is a terminal, the method comprising the steps of:
Step 1: the calling soft switch control device to start transmission with the calling media (Setup) message; Step 2: said soft switch control device is configured media false, false starts and the called media transmission belt (Setup) message;
Step 3: said soft switch device controlling the steering ring (Alerting) message with the media and the media server is connected (Connect) message without sending said calling party through the front medium and placed above calling tone to the caller via the Real-time Transport Protocol ;
Step 4: said called hook, it transmits a connection (Connect) message to the soft switch control device;
Step 5: said soft switch control device determines the connection (Connect) message with or without called media, and if yes, quickly type described above is called, step 7; otherwise, the above-described type called a slow, step 6;
Step 6: said soft switch control device and the called parties via H.245 media negotiation process, and said soft switch control device called media obtained above;
Step 7: said soft switch control device via H.245 media control signaling said caller to said called switching medium;
Step 8: said soft switch control device via H.245 control signaling said called the media to the media switching said caller.
2. The method according to claim 1, characterized in that
Medium comprising at least said caller calling supported media type, media calling internet protocol address and port number information of the calling media;
The dummy media and media type supported by said caller same media type, the media and the Internet Protocol address of false unreachable internet protocol address, port number, optionally false medium;
Medium of the media server and the media includes at least CRBT tone media;
Media negotiation performed by the above-described operation comprising at least H.245 master-slave determination operation, switching operation and the capability to open a media channel operation;
Said call tone and a tone color ring comprising at least;
Medium comprising at least said called called supported media types, called media called internet protocol address and port number information media.
3. The method according to claim 2, wherein in the step 6, said soft switch control device and said media negotiation performed by both the called H.245 using the process medium is called false medium and said consultation.
4. The method according to claim 3, characterized in that the steps needed to perform the steps above prior to the 7:
It said caller and said soft switch control device in turn two-way exchange of master slave determination and ability, and said caller and said soft switch control both devices can receive the acknowledgment message.
5. The method of claim 3, wherein when the called rapid type, ho executing the step 8 to perform the steps needed before - said called and said soft switch control device sequentially from the two-way primary ability to identify and exchange and said called and said soft switch control both devices can receive the acknowledgment message.
6. A method as claimed in claim 1 or claim 4, wherein said step includes the step 7:
Step 701: said soft switch control device to transmit the calling party with the media type handover request type (RequestMode) message;
Step 702: After receiving the request for said caller type (RequestMode) message to the soft switch control device replies to requests to confirm the type (RequestModeAck) message;
Step 703: said caller and said soft switch control device via the bidirectional logical channel is closed (CloseLogicaiChannei) and closing the logical channel acknowledgment message (CloseLogicalChannelAck) message to close a respective opening media channel;
Step 704: said caller and said soft switch control device and open logical channel acknowledgment (OpenLogicalChamelAck) message required to open a media channel by a bidirectional logical channel play Jian (OpenLogicalChannd) message.
7. A method according to claim 1 or 5, wherein said step includes the step 8:
Step 801: said soft switch control device transmits to the called terminal capability set empty (TerminalCapabilitySetNULL) message;
Step 802: the terminal receives said called after setting the empty capacity (TerminalCapabilitySetNULL) message to the soft switch control device to reply acknowledgment terminal capability set (TerminalCapabilitySetAck) message;
Ho step 803: the called party and above said soft switch control device via the bidirectional logical channel is closed (CloseLogicalOiannel) and closing the logical channel acknowledgment message (CloseLogicalChannelAck) message to close a respective opening media channel;
Step 804: said soft switch control device receiving the setting terminal capability acknowledgment (TerminalCapabilitySetAck) message, and confirms the above-described medium passage is completely closed, to said non-empty terminal capability set of the media type after the switching-called transmission (TerminalCapabilitySet )news;
Step 805: After receiving the non-empty said called terminal capability set (TerminalCapabilitySet) message, and the ability to complete the two-way soft switch control device of the above-described exchange process, and controls said soft switch device to respond to non-empty set terminal capability acknowledgment ( TerminalCapabilitySetAck) message; step 806: after said soft switch control device receives a non-empty capability of the called terminal setting confirmation reply (TerminalCapabilitySetAck) message, and initiating said called bidirectional exchange capacity and the master-slave determination operation;
Step 807: the called party and above said soft switch control device through a bidirectional open logical channel
(The OpenLogicalChannel) and an open logical channel acknowledgment message (an OpenLogicalChannelAck) required to open a media channel message. '
8. The method of claim 6, wherein said soft switch control device can be switched for different terminal types or handover of the terminal nodes is used to match medium handover procedure.
9. The method of claim 7, wherein said soft switch control device can be switched for different terminal types or handover of the terminal nodes is used to match medium handover procedure.
10. The method of claim 1, characterized in that the control device can be intelligent service instead of the soft switch control device to initiate the process of switching the above-described media.
11, to realize a method of switching voice media protocol H.323 in one kind, for slow calling call type, characterized in that the medium in which a handover procedure is initiated by the soft switch control device, switching the voice media type medium, and is switched H.323 terminal is a terminal, the method comprising the steps of:
Step 1: calling softswitch device transmits to the control without starter calling media (Setup) message; Step 2: said soft switch control device transmits to the called media without starter (Setup) message; Step 3: said soft the control device switching the steering said caller sending a ring (Alerting) message and the media without the media server is connected (connect) message without the media through the front;
Step 4: The above calling and said soft switch control device by the two sides H.245 media negotiation process, and said caller to obtain medium of the media server and listen to the call via audio Realtime Transport Protocol;
Step 5: said called hook, said soft switch control device to connect the called party without transmission medium (Connect) message;
Step 6: said soft switch control device is configured false medium;
Step 7: said soft switch control device and said called parties via H.245 media negotiation process, and said soft switch control device obtains the called media;
Step 8: said soft switch control device via H.245 media control signaling said caller to said called switching medium;
Step 9: said soft switch control device via H.245 control signaling said called the media to the media switching said caller.
12. A method according to claim 11, characterized in that
Medium comprising at least said caller calling supported media type, media calling internet protocol address and port number information of the calling media;
The dummy media media types include conventional various types of media, and the media false internet protocol address for an internet protocol address unreachable, false medium optionally a port number;
Medium of the media server and the media includes at least CRBT tone media;
Media negotiation performed by the above-described operation comprising at least H.245 master-slave determination operation, switching operation and the capability to open a media channel operation;
Said call tone and a tone color ring comprising at least;
Medium comprising at least said called called supported media types, called media called internet protocol address and port number information media.
13. The method of claim 12, wherein in the step 7, said soft switch control device and said media both performed by the called H.245 procedures to perform media negotiation using the media and said called false consultation.
14. The method of claim 11, wherein said step includes the step 8:
Step 801: said soft switch control device to transmit the calling party with the media type handover request type (RequestMode) message;
Step 802: After receiving the request for said caller type (RequestMode) message to the soft switch control device replies to requests to confirm the type (RequestModeAck) message;
Step 803: said caller and said soft switch control device via the bidirectional logical channel is closed (closeLogicalChannel) and closing the logical channel acknowledgment message (CloseLogicalChannelAck) Close message playing Jian respective media channel;
Step 804: said caller and said soft switch control device through a bidirectional open logical channel (the OpenLogicalChannel) and an open logical channel acknowledgment message (OpenLogicalOiannelAck) required to open a media channel message.
15. The method according to claim 11, wherein said step includes the step 9:
Step 901: setting said soft switch control device transmits the called terminal to the empty capacity
(TerminalCapabilitySetNULL) message;
Step 902: the terminal receives said called after setting the empty capacity (TeraiinalCapabilitySetNULL) message to the soft switch control device to reply acknowledgment terminal capability set (TeraiinalCapabilitySetAck) message;
Step 903: the called party and above said soft switch control device via the bidirectional logical channel is closed
(CloseLogicalChannel) and closing the logical channel acknowledgment message (CloseLogicalChannelAck) message to close a respective opening media channel;
Step 904: said soft switch control device receiving the setting terminal capability acknowledgment (TeraiinalCapabilitySetAck) message, and confirms the above-described medium passage is completely closed, to said non-empty terminal capability set the media type of the transmission band called handover (of Tei 'minalCapabilitySet) message;
Step 905: After receiving the non-empty said called terminal capability set (TerminalCapabilitySet) message, and the ability to complete the two-way soft switch control device of the above-described exchange process, and controls said soft switch device to respond to non-empty set terminal capability acknowledgment ( TeraiinalCapabilitySetAck) message; step 906: said soft switch control device receives the terminal capability of the non-empty set after determining the called reply lA (TferminaiCapabilitySetAck) message, launched into line and said called master-slave determination and the bidirectional capability exchange operation; step 907: the called party and above said soft switch control device through a bidirectional open logical channel (the OpenLogicalChannel) and an open logical channel acknowledgment message (an OpenLogicalChannelAck) required to open a media channel message.
16. The method of claim 14 or claim 15, wherein said soft switch control device can be switched for different terminal types or handover of the terminal nodes is used to match medium handover procedure.
17. The method according to claim 11, characterized in that the control device can be intelligent service instead of the soft switch control device to initiate the process of switching the above-described media.
PCT/CN2005/001910 2005-11-14 2005-11-14 A method for implementing the media switch in the voice service of the h.323 protocol WO2007053981A1 (en)

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Applications Claiming Priority (2)

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CN 200580050011 CN101194483B (en) 2005-11-14 2005-11-14 Media switching realization method in voice service of H.323 protocol
PCT/CN2005/001910 WO2007053981A1 (en) 2005-11-14 2005-11-14 A method for implementing the media switch in the voice service of the h.323 protocol

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020021275A (en) * 2000-09-14 2002-03-20 이승우 Audio standard converting system for supporting phone of portable terminal
CN1407445A (en) * 2001-08-24 2003-04-02 华为技术有限公司 Method for realizing interactive answer/speech mailbox facility by software
US6785223B1 (en) * 1999-04-22 2004-08-31 Siemens Information And Communication Networks, Inc. System and method for restarting of signaling entities in H.323-based realtime communication networks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6785223B1 (en) * 1999-04-22 2004-08-31 Siemens Information And Communication Networks, Inc. System and method for restarting of signaling entities in H.323-based realtime communication networks
KR20020021275A (en) * 2000-09-14 2002-03-20 이승우 Audio standard converting system for supporting phone of portable terminal
CN1407445A (en) * 2001-08-24 2003-04-02 华为技术有限公司 Method for realizing interactive answer/speech mailbox facility by software

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CN101194483A (en) 2008-06-04

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