CN101018197A - A method, system and device for media stream transmission - Google Patents
A method, system and device for media stream transmission Download PDFInfo
- Publication number
- CN101018197A CN101018197A CNA2007100075188A CN200710007518A CN101018197A CN 101018197 A CN101018197 A CN 101018197A CN A2007100075188 A CNA2007100075188 A CN A2007100075188A CN 200710007518 A CN200710007518 A CN 200710007518A CN 101018197 A CN101018197 A CN 101018197A
- Authority
- CN
- China
- Prior art keywords
- gateway device
- media gateway
- destination node
- media
- media stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The disclosed transmission method for media flow comprises: A. the transfer-media gateway device builds signaling connection with two media gateway devices through a transfer-calling server, and creates the first/second media flow temporary terminal for the first/second gateway device; B. the transfer-media gateway device connects two temporary terminals; and C. transfer-media gateway device transmits the media flow between two gateway devices. This invention improves QoS for transferring business.
Description
Technical field
The present invention relates to the network communications technology, particularly a kind of method of media stream, system and equipment.
Background technology
Next generation network (NGN) is a kind of business-driven type network, because IP technology rapid development, conventional telecommunication network will progressively become the marginal portion of grouping backbone network, use in order to support that new multimedia is commercial, conventional telecommunication network will be more and more open, and introducing many new functions and physical unit, NGN is exactly the network configuration of this new network environment of reflection.
The Network layer of NGN mainly is responsible for the relevant treatment of service logic, as business generation, service logic definition and business programming interface etc.Key-course relates generally to the relevant function of soft switch/IMS, finishes the concrete execution of service logic, wherein comprises operations such as calling intelligent and route.Transport layer is responsible for information is transmitted in packet network.Access Layer is made up of various media gateway or intelligent access terminal equipment, and its function is that the user is connected to network, concentrates customer service that they are passed to the destination then.
In the relevant standard of NGN, such as H.248 agreement, Media Gateway Control Protocol, media gateway is responsible for the media conversion in a kind of network is become the desired media formats of another kind of network, can between the Media Stream of the bearer path of Circuit Switching Network and Packet Based Network, change as media gateway, can processing audio, medium such as video.Media gateway can be divided into Tandem Gateway, IAD etc., is the key equipment of NGN service access to packet carrying network.
NGN is as the Next Generation Telecommunication Networks network, not only needs the business that provides new, also needs PSTN (PSTN) business that provides traditional.In the packet-based core networks of existing NGN, when traditional PSTN basic service is provided, comparative maturity, but providing the transfer service of PSTN, such as business such as hooking transfers, can not be between media gateway device the reserving network resources media stream, cause speech quality not ensure.
As shown in Figure 1, when prior art transfer media gateway device is set up signaling and is connected by the transfer call server and first media gateway device, earlier setting up signaling with first call server is connected, create a semipermanent destination node of Time Division Multiplexing channel and the provisional destination node of Media Stream at self, wherein, the source IP address of Media Stream and port numbers are self, and purpose IP address and port numbers are first media gateway device; First media gateway device obtains the IP address and the port numbers of transfer media gateway device by first call server, create one the one semipermanent destination node of TDM channel and one the first provisional destination node of Media Stream at self, wherein, the source IP address of Media Stream and port numbers are self, and purpose IP address and port numbers are the transfer media gateway device.Like this can be between the transfer media gateway and first media gateway reserving network resources media stream.
When prior art transfer media gateway device is set up signaling and is connected by the transfer call server and second media gateway device, earlier setting up signaling with second call server is connected, the semipermanent destination node of a TDM channel that to create for first media gateway device is as the semipermanent destination node of the 2nd TDM channel, create one the second provisional destination node of Media Stream at self, wherein, the source IP address of Media Stream and port numbers are self, and purpose IP address and port numbers are second media gateway device; Second media gateway device obtains the IP address and the port numbers of transfer media gateway device by second call server, create one the 2nd semipermanent destination node of TDM channel and one the second provisional destination node of Media Stream at self, wherein, the source IP address of Media Stream and port numbers are self, and purpose IP address and port numbers are the transfer media gateway device.Like this can be between the transfer media gateway and second media gateway reserving network resources media stream.
Signaling connect set up successfully after, Media Stream can be respectively transmits between transfer media gateway device and first media gateway device, second media gateway device.
As shown in Figure 2, the transfer media gateway device is with after first media gateway device and second media gateway device are set up signaling and be connected, by the transfer call server IP address and the port numbers of second media gateway device sent to first call server, the IP address and the port numbers of first media gateway device are sent to second call server, semipermanent destination node of TDM channel and the provisional destination node of Media Stream that the deletion of transfer media gateway device is created.First media gateway device obtains the IP address and the port numbers of second media gateway device by first call server, with the purpose IP address of the Media Stream of the provisional destination node of first Media Stream and purpose IP address and the port numbers that port numbers is made as second media gateway device, Media Stream is sent to second media gateway device; Second media gateway device obtains the IP address and the port numbers of first media gateway device by second call server, with the purpose IP address of the Media Stream of the provisional destination node of second Media Stream and IP address and the port numbers that port numbers is made as first media gateway device, Media Stream is sent to first media gateway device.
After shifting successfully, Media Stream transmits between first media gateway device and second media gateway device, but there is not reserving network resources media stream between first media gateway and second media gateway, make and data-bag lost can take place in the media flow transmission process, thus traffic affecting service quality.
In sum, the transfer media gateway device is not the media flow transmission reserving network resources when carrying out call transfer, thereby after causing Media Stream to shift, the service quality of transfer service does not ensure between the media gateway device.
Summary of the invention
Embodiments of the invention provide a kind of method, system and equipment of media stream, do not have the problem that ensures in order to the service quality that solves the transfer service that exists in the prior art.
A kind of method of media stream is applied to comprise: in the system of the media stream of first media gateway device, second media gateway device and transfer media gateway device, this method comprises:
A, described transfer media gateway device are set up signaling with described first media gateway device with described second media gateway device by the transfer call server and are connected, and create the provisional destination node of second Media Stream that is used to transmit the provisional destination node of first Media Stream of the described first media gateway device Media Stream and is used to transmit the described second media gateway device Media Stream;
B, described transfer media gateway device are connected the provisional destination node of described first Media Stream with the provisional destination node of described second Media Stream;
C, described transfer media gateway device are transmitted the Media Stream between described first media gateway device and described second media gateway device.
A kind of system of media stream comprises: first media gateway device, second media gateway device and transfer media gateway device,
Described transfer media gateway device, be used for setting up signaling with described first media gateway device with described second media gateway device and be connected, create the provisional destination node of second Media Stream that is used to transmit the provisional destination node of first Media Stream of the described first media gateway device Media Stream and is used to transmit the described second media gateway device Media Stream by the transfer call server; The provisional destination node of described first Media Stream is connected with the provisional destination node of described second Media Stream; Transmit the Media Stream between described first media gateway device and described second media gateway device.
A kind of media gateway device comprises:
Link block, be used for setting up signaling with first media gateway device with second media gateway device and be connected, create the provisional destination node of second Media Stream that is used to transmit the provisional destination node of first Media Stream of the described first media gateway device Media Stream and is used to transmit the described second media gateway device Media Stream by the transfer call server;
Processing module is used for the provisional destination node of described first Media Stream is connected with the provisional destination node of described second Media Stream, transmits the Media Stream between described first media gateway device and described second media gateway device.
A kind of call server comprises:
The signaling link block is used for setting up signaling with first media gateway device with second media gateway device and is connected, and the IP address and the port numbers of described first media gateway device and described second media gateway device sent to media gateway device;
Receiver module, be used to receive notification message from media gateway device after, send to described media gateway device and to revise order.
The transfer media gateway device that embodiments of the invention provided is set up signaling with first media gateway device with second media gateway device by the transfer call server and is connected, transmit the Media Stream between first media gateway device and second media gateway device, keep the Internet resources of keeping for first media gateway device and second media gateway device, ensured the service quality of transfer service between the media gateway device.
Description of drawings
Fig. 1 is the media flow transmission direction schematic diagram that prior art transfer media gateway device and calling both sides connect;
The media flow transmission direction schematic diagram that Fig. 2 converses for the prior art calling both sides;
Fig. 3 is that the system of media stream in the embodiment of the invention forms schematic diagram;
Fig. 4 A is the structural representation of transfer call server in the embodiment of the invention;
Fig. 4 B is the structural representation of transfer media gateway device in the embodiment of the invention;
Fig. 5 is the method flow schematic diagram of media stream in the embodiment of the invention;
Fig. 6 A is the schematic diagram that the transfer media gateway device is created the provisional destination node of first Media Stream in the embodiment of the invention;
Fig. 6 B is the schematic diagram that the transfer media gateway device is created the provisional destination node of second Media Stream in the embodiment of the invention;
Fig. 6 C is that the transfer media gateway device carries out the schematic diagram that destination node connects in the embodiment of the invention;
The media flow transmission direction schematic diagram that Fig. 7 converses for calling both sides in the embodiment of the invention;
Fig. 8 A is that hooking transfer service transfer media gateway device carries out the schematic flow sheet that signaling is connected with first media gateway device in the embodiment of the invention;
Fig. 8 B is that hooking transfer service transfer media gateway device carries out the schematic flow sheet that signaling is connected with second media gateway device in the embodiment of the invention;
Fig. 8 C is that hooking transfer service transfer media gateway device carries out the schematic flow sheet that destination node connects in the embodiment of the invention;
Fig. 8 D is the schematic flow sheet that hooking transfer service transfer media gateway device carries out the Media Stream exchange in the embodiment of the invention.
Embodiment
At at present in next generation network the transfer media gateway device when carrying out call transfer, it is not the media flow transmission reserving network resources, thereby after causing Media Stream to shift, the service quality of transfer service does not have the problem of guarantee between the media gateway device, transfer media gateway device of the present invention is set up signaling with first media gateway device with second media gateway device by the transfer call server and is connected, transmit the Media Stream between first media gateway device and second media gateway device, thereby solved the problems referred to above.
As shown in Figure 3, the system of media stream comprises in the embodiment of the invention: transfer media gateway device 10, transfer call server 20, first media gateway device 30 and second media gateway device 40.
Transfer media gateway device 10, with transfer call server 20, first media gateway device 30 is connected with second media gateway device 40, be used for setting up signaling with first media gateway device 30 with second media gateway device and be connected 40 by transfer call server 20, create the semipermanent destination node of time division multiplex channel, the provisional destination node of second Media Stream that is used to transmit the provisional destination node of first Media Stream of first media gateway device, 30 Media Streams and is used to transmit second media gateway device, 40 Media Streams, and send a notification message to transfer call server 20, after the modification order of receiving from transfer call server 20, the provisional destination node of first Media Stream is connected with the provisional destination node of second Media Stream, transmits the Media Stream between first media gateway device 30 and second media gateway device 40.
First media gateway device 30, be connected with transfer call server 20 with transfer media gateway device 10, be used for when carrying out the signaling connection, create one the one semipermanent destination node of TDM channel and one the first provisional destination node of Media Stream at self, the source IP address of Media Stream and port numbers are self, purpose IP address and port numbers are transfer media gateway device 10, utilize semipermanent destination node of a TDM channel and the provisional destination node of first Media Stream that Media Stream is sent to transfer media gateway device 10.
Second media gateway device 40, be connected with transfer call server 20 with transfer media gateway device 10, be used for when carrying out the signaling connection, create one the 2nd semipermanent destination node of TDM channel and one the second provisional destination node of Media Stream at self, the source IP address of Media Stream and port numbers are self, purpose IP address and port numbers are transfer media gateway device 10, utilize semipermanent destination node of the 2nd TDM channel and the provisional destination node of second Media Stream that Media Stream is sent to transfer media gateway device 10.
If be not connected with same call server between transfer media gateway device 10 and the media gateway device, then transfer media gateway device 10 is set up the signaling connection by transfer call server 20 and the corresponding media gateway device that call server connected; Media gateway device obtains the IP address and the port numbers of transfer media gateway device 10 by corresponding call server.
According to the difference of transfer service, each media gateway device and call server can be as transfer media gateway device 10 and transfer call servers 20.
Shown in Fig. 4 A, transfer call server 20 comprises in the embodiment of the invention: signaling link block 200 and receiver module 210.
Signaling link block 200, be connected with transfer media gateway device 10, first media gateway device 30 and second media gateway device 40, be used for setting up signaling with second media gateway device 40 and be connected, the IP address and the port numbers of first media gateway device 30 and second media gateway device 40 sent to transfer media gateway device 10 with first media gateway device 30.
Shown in Fig. 4 B, transfer media gateway device 10 comprises in the embodiment of the invention: link block 100, processing module 110, removing module 120 and sending module 130.
Link block 100, be connected with sending module 130 with transfer call server 20, first media gateway device 30, second media gateway device 40, processing module 110, being used for setting up signaling with first media gateway device 30 with second media gateway device 40 by transfer call server 20 is connected, the provisional destination node of second Media Stream that establishment is used to transmit the provisional destination node of first Media Stream of first media gateway device, 30 Media Streams and is used to transmit second media gateway device, 40 Media Streams is set up success message to sending module 130 transmissions.
Wherein, link block 100 also comprises: creation module 1000.
Processing module 110, be connected with removing module 120 with link block 100, be used for after the modification order of receiving from sending module 130, the provisional destination node of first Media Stream in the link block 100 is connected with the provisional destination node of second Media Stream, send deletion message to removing module 120, transmit the Media Stream between first media gateway device 30 and second media gateway device 40.
Wherein, processing module 110 also comprises: first forwarding module 1100 and second forwarding module 1110.
First forwarding module 1100 is used for the Media Stream from the provisional destination node of first Media Stream of link block 100 is sent to second media gateway device 40 by the provisional destination node of second Media Stream.
Second forwarding module 1110,, be used for the Media Stream from the provisional destination node of second Media Stream of link block 100 is sent to first media gateway device 30 by the provisional destination node of first Media Stream.
Removing module 120 is connected with processing module 110 with link block 100, is used for after the deletion message of receiving from processing module 110 the semipermanent destination node of time division multiplex channel in the deletion link block 100.
Sending module 130, be connected with transfer call server 20, link block 100 and processing module 110, be used for receive from link block 100 set up success message after, send the notification message that comprises the provisional destination node of first Media Stream and second Media Stream provisional destination node IP address and port numbers to transfer call server 20, after the modification order of receiving, transmit the modification order to processing module 110 from transfer call server 20.
As shown in Figure 5, the method for media stream comprises the following steps: in the embodiment of the invention
After step 502, transfer call server are received notification message from the transfer media gateway device, send to described transfer media gateway device and to revise order.
After step 503, transfer media gateway device were received modification order from the transfer call server, the semipermanent destination node of deletion time division multiplex channel was connected the provisional destination node of first Media Stream with the provisional destination node of second Media Stream.
As shown in Figure 6A, the transfer media gateway device is created the schematic diagram of the provisional destination node of first Media Stream in the embodiment of the invention,
When the transfer media gateway device is set up signaling and is connected by the transfer call server and first media gateway device, create a semipermanent destination node of TDM channel and the provisional destination node of Media Stream at self.Wherein, the source IP address of Media Stream and port numbers are self, and purpose IP address and port numbers are first media gateway device.
Shown in Fig. 6 B, the transfer media gateway device is created the schematic diagram of the provisional destination node of second Media Stream in the embodiment of the invention,
When the transfer media gateway device is set up signaling and is connected by the transfer call server and second media gateway device, the semipermanent destination node of a TDM channel that to create for first media gateway device is created one the second provisional destination node of Media Stream as the semipermanent destination node of the 2nd TDM channel at self.Wherein, the source IP address of Media Stream and port numbers are self, and purpose IP address and port numbers are second media gateway device.
Shown in Fig. 6 C, the transfer media gateway device carries out the schematic diagram that destination node connects in the embodiment of the invention,
The transfer media gateway device has been deleted the semipermanent destination node of the 2nd TDM channel after signaling is set up successfully, and provisional destination node of first Media Stream and the provisional destination node of second Media Stream are linked together.
As shown in Figure 7, the media flow transmission direction schematic diagram that calling both sides is conversed in the embodiment of the invention,
The transfer media gateway device links together provisional destination node of first Media Stream and the provisional destination node of second Media Stream, to send to second media gateway device by the provisional destination node of second Media Stream from the Media Stream of the provisional destination node of first Media Stream, will send first media gateway device by the provisional destination node of first Media Stream from the Media Stream of the provisional destination node of second Media Stream.
The transfer media gateway device is by between the transfer media gateway device and first media gateway device, and the reserving network resources media stream between the transfer media gateway device and second media gateway device, make IP address and the port numbers that to change the provisional destination node of Media Stream of self at first media gateway device and second media gateway device, just in the network path of reserved resource is arranged, can carry out transfer service, ensure the service quality of transfer service.
Transfer service comprises: in hooking transfer, transfer on no reply, generation, such as answer at business.Be that example specifies embodiments of the present invention now with the hooking transfer.
Shown in Fig. 8 A, hooking transfer service transfer media gateway device and first media gateway device carry out signaling and are connected and comprise the following steps: in the embodiment of the invention
After step 800, transfer media gateway device detect user 1 off-hook event, send the notification message that comprises user's 1 analog line interface message to the transfer call server.
After step 801, the notified message of transfer call server, send answer message to the transfer media gateway device.
Step 802, transfer media gateway device obtain the number that user 1 dials called subscriber 2, and the notification message that will comprise this number sends to the transfer call server.
After step 803, the notified message of transfer call server, send answer message to the transfer media gateway device.
Step 804, transfer call server are analyzed number, and the line correlation of going forward side by side authentication if allow professional application, sends a notification message to the transfer media gateway device.
After step 805, the notified message of transfer media gateway device, create a context (Context), the semipermanent destination node of TDM channel and the provisional destination node of first Media Stream that wherein comprise user 1, and user 1 parameter is set in Context, the source IP address and the port numbers of the provisional destination node of first Media Stream are set to self, send the answer message that comprises user's 1 parameter to the transfer call server.
Step 806, transfer call server find the first corresponding call server according to number, and send the invitation message that comprises call information and user's 1 parameter to first call server.
After step 807, first call server are received and entertained message, wait for the arrival of news to the transmission of transfer call server.
Step 808, first call server send the increase message that comprises user's 1 parameter to first media gateway device.
Step 809, after first media gateway device is received and is increased message, extract the IP address and the port numbers of transfer media gateway device, create a Context, the semipermanent destination node of TDM channel and the provisional destination node of first Media Stream that wherein comprise user 2, and user 2 parameter is set in Context, the source IP address and the port numbers of the provisional destination node of first Media Stream are set to self, the purpose IP address of the provisional destination node of first Media Stream and port numbers are set to the transfer media gateway device, send the answer message that comprises user's 2 parameters to first call server.
Step 810, first call server receive a reply after the message, send the interim message that comprises message related to calls and user's 2 parameters to the transfer call server.
After step 811, transfer call server are received interim message, send provisional confirmation message to first call server.
After step 812, first call server are received provisional confirmation message, send acknowledge message to the transfer call server.
After step 813, transfer call server are received acknowledge message, send the notification message that comprises user's 2 parameters to the transfer media gateway device.
After step 814, the notified message of transfer media gateway device, extract the IP address and the port numbers of first media gateway device, user 1 parameter is set in Context, the purpose IP address of the provisional destination node of first Media Stream and port numbers are set to first media gateway device, and send answer message to the transfer call server.
Step 815, transfer call server receive a reply after the message, send change message to first call server.
Step 816, first call server send acknowledge message to the transfer call server after receiving change message.
Step 817, first call server send to first media gateway device and revise message.
Behind step 818, user's 2 off-hooks, both sides begin conversation, and Media Stream transmits between the transfer media gateway device and first media gateway device.
Shown in Fig. 8 B, hooking transfer service transfer media gateway device and second media gateway device carry out signaling and are connected and comprise the following steps: in the embodiment of the invention
After step 820, transfer media gateway device detect user 1 hookflash event, send the notification message that comprises user's 1 analog line interface message to the transfer call server.
After step 821, the notified message of transfer call server, send answer message to the transfer media gateway device.
Step 822, transfer media gateway device obtain the number that user 1 dials called subscriber 2, and the notification message that will comprise this number sends to the transfer call server.
After step 823, the notified message of transfer call server, send answer message to the transfer media gateway device.
Step 824, transfer call server are analyzed number, and the line correlation of going forward side by side authentication if allow professional application, sends a notification message to the transfer media gateway device.
After step 825, the notified message of transfer media gateway device, create a Context2, the semipermanent destination node of TDM channel among the Context is transferred among the Context2, and in Context2, increase by one the second provisional destination node of Media Stream, and user 1 parameter is set in Context2, the source IP address and the port numbers of the provisional destination node of second Media Stream are set to self, send the answer message that comprises user's 1 parameter to the transfer call server.
Step 826, transfer call server find the second corresponding call server according to number, and send the invitation message that comprises call information and user's 1 parameter to second call server.
After step 827, second call server are received and entertained message, wait for the arrival of news to the transmission of transfer call server.
Step 828, second call server send the increase message that comprises user's 1 parameter to second media gateway device.
Step 829, after second media gateway device is received and is increased message, extract the IP address and the port numbers of transfer media gateway device, create a Context, the semipermanent destination node of TDM channel and the provisional destination node of first Media Stream that wherein comprise user 3, and user 3 parameter is set in Context, the source IP address and the port numbers of the provisional destination node of first Media Stream are set to self, the purpose IP address of the provisional destination node of first Media Stream and port numbers are set to the transfer media gateway device, send the answer message that comprises user's 3 parameters to second call server.
Step 830, second call server receive a reply after the message, send the interim message that comprises message related to calls and user's 3 parameters to the transfer call server.
After step 831, transfer call server are received interim message, send provisional confirmation message to second call server.
After step 832, second call server are received provisional confirmation message, send acknowledge message to the transfer call server.
After step 833, transfer call server are received acknowledge message, send the notification message that comprises user's 3 parameters to the transfer media gateway device.
After step 834, the notified message of transfer media gateway device, extract the IP address and the port numbers of second media gateway device, user 1 parameter is set in Context2, the purpose IP address of the provisional destination node of first Media Stream and port numbers are set to second media gateway device, and send answer message to the transfer call server.
Step 835, transfer call server receive a reply after the message, send change message to second call server.
Step 836, second call server send acknowledge message to the transfer call server after receiving change message.
Step 837, second call server send to second media gateway device and revise message.
Behind step 838, user's 3 off-hooks, both sides begin conversation, and Media Stream transmits between the transfer media gateway device and second media gateway device.
Shown in Fig. 8 C, hooking transfer service transfer media gateway device carries out destination node and connects and to comprise the following steps: in the embodiment of the invention
After step 840, transfer media gateway device detect onhook event, send the notification message that comprises Context parameter and Context2 parameter to the transfer call server.
After step 841, the notified message of transfer call server, send modification message to the transfer media gateway device.
Step 842, transfer media gateway device are merged into Context3 with Context and Context2 after receiving and revising message, and the semipermanent destination node of deletion TDM channel is connected the provisional destination node of first Media Stream with the provisional destination node of second Media Stream.
Step 843, transfer media gateway device send answer message to the transfer call server.
Shown in Fig. 8 D,, hooking transfer service transfer media gateway device in the embodiment of the invention comprises the following steps: for carrying out the Media Stream exchange
Step 850, first media gateway device send Media Stream according to the purpose IP and the port numbers of the provisional destination node of first Media Stream to the transfer media gateway device.
Step 851, transfer media gateway are according to the purpose IP address and the port numbers of the provisional destination node of second Media Stream among the Context3, to send to second media gateway device by the provisional destination node of second Media Stream from the Media Stream of the provisional destination node of first Media Stream.
Step 852, second media gateway device send Media Stream according to the purpose IP and the port numbers of the provisional destination node of first Media Stream to the transfer media gateway device.
Step 853, transfer media gateway are according to the purpose IP address and the port numbers of the provisional destination node of first Media Stream among the Context3, to send to first media gateway device by the provisional destination node of first Media Stream from the Media Stream of the provisional destination node of second Media Stream.
From the invention described above embodiment as can be seen: the transfer media gateway is after connecting with first media gateway device and second media gateway device, the provisional destination node of first Media Stream is connected with the provisional destination node of second Media Stream, Media Stream is transmitted between first media gateway device and second media gateway device, the Internet resources of keeping for first media gateway device and second media gateway device have been kept, make Media Stream the packet loss phenomenon can not take place, ensured the service quality of transfer service between the media gateway device.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1, a kind of method of media stream is characterized in that, this method comprises:
A, transfer media gateway device are set up signaling with first media gateway device with second media gateway device by the transfer call server and are connected, and create the provisional destination node of second Media Stream that is used to transmit the provisional destination node of first Media Stream of the described first media gateway device Media Stream and is used to transmit the described second media gateway device Media Stream;
B, described transfer media gateway device are connected the provisional destination node of described first Media Stream with the provisional destination node of described second Media Stream;
C, described transfer media gateway device are transmitted the Media Stream between described first media gateway device and described second media gateway device.
2, the method for claim 1 is characterized in that, step C comprises:
C11, described first media gateway device send Media Stream to the provisional destination node of described first Media Stream of described transfer media gateway device;
C12, described transfer media gateway device will send to described second media gateway device by the provisional destination node of described second Media Stream from the Media Stream of the provisional destination node of described first Media Stream;
Or step C comprises:
C21, described second media gateway device send Media Stream to the provisional destination node of described second Media Stream of described transfer media gateway device;
C22, described transfer media gateway device will send to described first media gateway device by the provisional destination node of described first Media Stream from the Media Stream of the provisional destination node of described second Media Stream.
3, the method for claim 1, it is characterized in that, when setting up signaling and be connected by described transfer call server and described first media gateway device and described second media gateway device, also creates described transfer media gateway device the semipermanent destination node of time division multiplexing, among the then described step B, with the provisional destination node of described first Media Stream with also comprise after the provisional destination node of described second Media Stream is connected:
Delete the semipermanent destination node of described time division multiplex channel.
4, the method for claim 1 is characterized in that, after the steps A, also comprises before the step B:
B1, described transfer media gateway device send to described transfer call server and comprise the provisional destination node of described first Media Stream and the IP address of the provisional destination node of described second Media Stream and the notification message of port numbers;
After B2, described transfer call server are received described notification message, send the modification order to described transfer media gateway device;
B3, described transfer media gateway device receive described modification order.
5, a kind of system of media stream comprises: first media gateway device, second media gateway device and transfer media gateway device, it is characterized in that,
Described transfer media gateway device, be used for setting up signaling with described first media gateway device with described second media gateway device and be connected, create the provisional destination node of second Media Stream that is used to transmit the provisional destination node of first Media Stream of the described first media gateway device Media Stream and is used to transmit the described second media gateway device Media Stream by described transfer call server; The provisional destination node of described first Media Stream is connected with the provisional destination node of described second Media Stream; Transmit the Media Stream between described first media gateway device and described second media gateway device.
6, system as claimed in claim 5 is characterized in that, described transfer media gateway device comprises:
Link block, be used for setting up signaling with described first media gateway device with described second media gateway device and be connected, the provisional destination node of second Media Stream that create the semipermanent destination node of time division multiplex channel, is used to transmit the provisional destination node of first Media Stream of the described first media gateway device Media Stream and is used to transmit the described second media gateway device Media Stream by the transfer call server;
Processing module is used for the provisional destination node of described first Media Stream is connected with the provisional destination node of described second Media Stream, transmits the Media Stream between described first media gateway device and described second media gateway device.
7, system as claimed in claim 6 is characterized in that, described processing module also comprises:
First forwarding module is used for the Media Stream from the provisional destination node of described first Media Stream is sent to described second media gateway device by the provisional destination node of described second Media Stream;
Second forwarding module is used for the Media Stream from the provisional destination node of described second Media Stream is sent to described first media gateway device by the provisional destination node of described first Media Stream.
8, system as claimed in claim 6 is characterized in that, described link block also comprises:
Creation module when being used for setting up signaling and being connected by described transfer call server and described first media gateway device and described second media gateway device, is created the semipermanent destination node of time division multiplex channel;
Then described transfer media gateway device comprises:
Removing module is used in described processing module the provisional destination node of described first Media Stream deleting the semipermanent destination node of described time division multiplex channel in the described creation module with after the provisional destination node of described second Media Stream is connected.
9, system as claimed in claim 6 is characterized in that, described transfer media gateway device also comprises:
Sending module, be used for after described link block is created provisional destination node of described first Media Stream and the provisional destination node foundation of described second Media Stream, comprise the provisional destination node of described first Media Stream and the IP address of the provisional destination node of described second Media Stream and the notification message of port numbers to described transfer call server transmission, after the modification order of receiving, transmit described modification order to described processing module from described transfer call server;
Then described processing module is connected the provisional destination node of described first Media Stream after receiving described modification order with the provisional destination node of described second Media Stream;
Then described transfer call server comprises:
Receiver module, be used to receive described notification message after, send to described transfer media gateway device and to revise order.
10, a kind of media gateway device is characterized in that, this equipment comprises:
Link block, be used for setting up signaling with first media gateway device with second media gateway device and be connected, create the provisional destination node of second Media Stream that is used to transmit the provisional destination node of first Media Stream of the described first media gateway device Media Stream and is used to transmit the described second media gateway device Media Stream by the transfer call server;
Processing module is used for the provisional destination node of described first Media Stream is connected with the provisional destination node of described second Media Stream, transmits the Media Stream between described first media gateway device and described second media gateway device.
11, media gateway device as claimed in claim 10 is characterized in that, described processing module also comprises:
First forwarding module is used for the Media Stream from the provisional destination node of described first Media Stream is sent to described second media gateway device by the provisional destination node of described second Media Stream;
Second forwarding module is used for the Media Stream from the provisional destination node of described second Media Stream is sent to described first media gateway device by the provisional destination node of described first Media Stream.
12, media gateway device as claimed in claim 10 is characterized in that, described link block also comprises:
Creation module when being used for setting up signaling and being connected by described transfer call server and described first media gateway device and described second media gateway device, is created the semipermanent destination node of time division multiplex channel;
Then described transfer media gateway device comprises:
Removing module is used in described processing module the provisional destination node of described first Media Stream deleting the semipermanent destination node of described time division multiplex channel in the described creation module with after the provisional destination node of described second Media Stream is connected.
13, media gateway device as claimed in claim 10 is characterized in that, described transfer media gateway device also comprises:
Sending module, be used for after described link block is created provisional destination node of described first Media Stream and the provisional destination node foundation of described second Media Stream, comprise the provisional destination node of described first Media Stream and the IP address of the provisional destination node of described second Media Stream and the notification message of port numbers to described transfer call server transmission, after the modification order of receiving, transmit described modification order to described processing module from described transfer call server;
Then described processing module is connected the provisional destination node of described first Media Stream after receiving described modification order with the provisional destination node of described second Media Stream.
14, a kind of call server is characterized in that, this call server comprises:
The signaling link block is used for setting up signaling with first media gateway device with second media gateway device and is connected, and the IP address and the port numbers of described first media gateway device and described second media gateway device sent to media gateway device;
Receiver module, be used to receive notification message from media gateway device after, send to described media gateway device and to revise order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100075188A CN101018197A (en) | 2007-01-30 | 2007-01-30 | A method, system and device for media stream transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100075188A CN101018197A (en) | 2007-01-30 | 2007-01-30 | A method, system and device for media stream transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101018197A true CN101018197A (en) | 2007-08-15 |
Family
ID=38726958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100075188A Pending CN101018197A (en) | 2007-01-30 | 2007-01-30 | A method, system and device for media stream transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101018197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282564A (en) * | 2015-10-22 | 2016-01-27 | 武汉兴图新科电子股份有限公司 | Method for guaranteeing smoothness of media stream in complex network structure |
-
2007
- 2007-01-30 CN CNA2007100075188A patent/CN101018197A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282564A (en) * | 2015-10-22 | 2016-01-27 | 武汉兴图新科电子股份有限公司 | Method for guaranteeing smoothness of media stream in complex network structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7656863B2 (en) | Method for soft switch call control and soft switch device using the same | |
| EP1362456B1 (en) | System and method for intercepting telecommunications | |
| US7979062B2 (en) | Communications method between a combinational terminal and multimedia terminal | |
| CN1930849B (en) | Method for establishing a call in a telecommunications network, telecommunications network, and controlling device for packet networks | |
| CN100574232C (en) | A kind of implementation method of parallel calls function of multimedia call | |
| CN100473059C (en) | Method for switching media stream code/decode format | |
| US8817775B2 (en) | Access gateway and method of operation by the same | |
| CN101018197A (en) | A method, system and device for media stream transmission | |
| US6904027B1 (en) | System and method for call transfer in packet switched local area networks | |
| CN100596093C (en) | Implementing method of intelligent media flow bypass | |
| US20070070981A1 (en) | Method and apparatus for dynamically establishing links between IP private branch exchanges | |
| CN101222651B (en) | Method and device for implementing co-line call | |
| CN101803332B (en) | For setting up the method for calling in a communication network | |
| WO2007124684A1 (en) | A method, system and apparatus for realizing multimedia calling service | |
| CN108900723B (en) | Forced insertion calling method, forced insertion calling equipment and communication system | |
| CN101192893B (en) | Next-generation network system supporting digital circuit doubling technology and its communication method | |
| CN100499708C (en) | Method for playing individualized ring back tone for calling terminal in low speed | |
| CN100484137C (en) | A method for transmitting voice on frame relay (VoFR) | |
| JP2004357218A (en) | Network telephone system, conference connection control method to be used in network telephone system, and call control server device for network telephone system | |
| CN101662748A (en) | Method for forwarding calls | |
| CN101222777B (en) | Method and system for reducing load and controlling simultaneous hold in separating system | |
| CN104639551A (en) | System and method for realizing multiple calls |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20070815 |