CN103167053A - Method and equipment for medium face address distribution in Internet protocol (IP) bearer establishment and soft switch system - Google Patents
Method and equipment for medium face address distribution in Internet protocol (IP) bearer establishment and soft switch system Download PDFInfo
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- CN103167053A CN103167053A CN2011104251664A CN201110425166A CN103167053A CN 103167053 A CN103167053 A CN 103167053A CN 2011104251664 A CN2011104251664 A CN 2011104251664A CN 201110425166 A CN201110425166 A CN 201110425166A CN 103167053 A CN103167053 A CN 103167053A
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Abstract
The invention provides a method and equipment for medium face address distribution in Internet protocol (IP) bearer establishment and a soft switch system. The method for medium face address distribution comprises the steps that a medium gateway receives a bearer establishment order sent by soft switch equipment, the bearer establishment order carries interconnection and interworking office direction parameters; the medium gateway judges office direction type of the call according to the office direction parameters, a judge result is obtained; and when the judge result indicates that the office direction type of the call is an interconnection and interworking office direction, an external IP address is distributed for the medium face of the call. Safety of the address of the medium face during interconnection and interworking can be improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to medium surface address distribution method, equipment and soft switchcall server in a kind of IP carrying foundation.
Background technology
Flexible exchanging network has been realized voice IPization in net at present, calls out the employing of control interface signaling and controls (BICC) agreement with the calling of bearer independent, carries based on IP.Time division multiplexing (TDM) mode is mainly adopted in different operators internetworking intercommunication, and the intercommunication signaling adopts ISUP (ISUP) agreement for calling out the control interface signaling, carries based on TDM.
Provide the internetworking switching business of internetworking business switching to wish further to enlarge transfer service, in this case, the Added Business amount uses IP bearing ratio TDM carrying can save the transmission link cost.Therefore, the technical scheme that needs consideration to adopt the IP mode to carry out the internetworking intercommunication in flexible exchanging network.
Flexible exchanging network adopts separation architecture, in call establishment, complete the call setup of signaling plane between soft switch (MSC-SERVER) by the call setup procedure of signaling plane, need simultaneously to control by the carrying creation facilities program (CFP) media channel foundation that media gateway (MGW) realizes loading end.In the carrying creation facilities program (CFP), Softswitch is called out interim allocation medium face IP address by Mc interface order local terminal media gateway for this, this IP address is sent to the opposite end media gateway by tunneling mechanism, and Softswitch is not processed the IP address that media gateway is distributed.
Fig. 1 is that schematic diagram is transmitted by Mc interface and Nc interface signaling message in the IP address that media gateway is distributed.As shown in Figure 1, the IP address distributed of above-mentioned media gateway is encapsulated in the signaling message of Mc interface between Softswitch and media gateway device and transmits in the signaling message of Nc interface between Softswitch.
When adopting the IP mode to carry out the internetworking intercommunication, need to use that the technology insulation such as fire compartment wall, network address translation (NAT) are inner, external network between the different operators network, to guarantee network security, so just relate to signaling and media flow IP address mapping problems.
The address mapping all can be carried out in the IP address of the IP bag that Softswitch and media gateway device send when going out to net, replaces original IP address, can not revise the address that encapsulates in the application layer signaling message but have NAT device now.In this case, the local terminal media gateway medium surface IP address that this net interconnecting Softswitch sends opposite end network interworking Softswitch to is internal network address, and is so namely dangerous, also can't carry out interworking between network.
In addition, because medium surface IP address is encapsulated in signaling plane signaling message and parameter, if NAT device will be modified to this IP address, need to support the parsing of application layer signaling protocol, each signaling message is analyzed, retrieved related news, the relevant information of revising in signaling parameter just can be completed modification, there is very large transformation difficulty, and equipment performance is also had a significant impact.
Summary of the invention
Technical problem to be solved by this invention is to provide medium surface address distribution method, equipment and the soft switchcall server in a kind of IP carrying foundation, the fail safe of medium surface address during with raising internetworking intercommunication.
For solving the problems of the technologies described above, the invention provides technical scheme as follows:
Medium surface address distribution method during a kind of IP carrying is set up comprises the steps:
Media gateway receives the carrying foundation order that Softswitch sends, and described carrying is set up in order and carried the office direction parameter that interconnects;
Described media gateway judges the office direction type of this calling according to described office direction parameter, obtain a judged result; And
When described judged result indicates the office direction type of this calling to be internetworking intercommunication office direction, be the medium surface distribution outside ip address of this calling.
Above-mentioned media address distribution method wherein, also comprises:
When described judged result indicates the office direction type of this calling to be non-internetworking intercommunication office direction, be the medium surface distribution implicit IP address of this calling.
Above-mentioned media address distribution method wherein, also comprises:
The IP address that described media gateway will be set up for IP carrying in advance is divided into 2 set: implicit IP address set and outside ip address set.
Above-mentioned media address distribution method, wherein, described office direction parameter is gateway exchange office direction designator between net.
A kind of media gateway comprises:
Receiver module is used for receiving the carrying foundation order that Softswitch sends, and described carrying is set up in order and carried the office direction parameter that interconnects;
Judge module the office direction type of this calling obtains a judged result for judging according to described office direction parameter;
Address assignment module is used for when described judged result indicates the office direction type of this calling to be internetworking intercommunication office direction, is the medium surface distribution outside ip address of this calling.
Above-mentioned media gateway, wherein, described address assignment module also is used for:
When described judged result indicates the office direction type of this calling to be non-internetworking intercommunication office direction, be the medium surface distribution implicit IP address of this calling.
Above-mentioned media gateway wherein, also comprises:
Configuration module, the IP address that is used for being used for IP carrying foundation is divided into 2 set: implicit IP address set and outside ip address set.
A kind of soft switchcall server comprises Softswitch and media gateway, wherein:
Described Softswitch is used for sending carrying to described media gateway and sets up order, and described carrying is set up in order and carried the office direction parameter that interconnects;
Described media gateway, be used for judging according to described office direction parameter the office direction type of this calling, obtain a judged result, when described judged result indicates the office direction type of this calling to be internetworking intercommunication office direction, be the medium surface distribution outside ip address of this calling.
Above-mentioned soft switchcall server, wherein, described media gateway also is used for:
When described judged result indicates the office direction type of this calling to be non-internetworking intercommunication office direction, be the medium surface distribution implicit IP address of this calling.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is by the inside and outside IP address set of configuration in the intercommunication media gateway, directly indicated the intercommunication media gateway device to distribute outside ip address to internetworking intercommunication office direction in loading establishing process by the intercommunication Softswitch, the fail safe of medium surface address when having improved the internetworking intercommunication, need not simultaneously to revise the medium surface IP address that encapsulates in the application layer signaling, avoid the transformation to NAT device.
Description of drawings
Fig. 1 is that schematic diagram is transmitted by Mc interface and Nc interface signaling message in the IP address that media gateway is distributed;
Fig. 2 is the media address distribution method flow chart in setting up according to the IP carrying of the embodiment of the present invention;
Fig. 3 is the structural representation according to the soft switchcall server of the embodiment of the present invention;
Fig. 4 is the structural representation according to the media gateway of the embodiment of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the accompanying drawings and the specific embodiments.
With reference to Fig. 2, the media address distribution method during the IP of embodiment of the present invention carrying is set up can comprise the steps:
Step 201: Softswitch sends carrying to media gateway and sets up order, and described carrying is set up in order and carried the office direction parameter that interconnects;
Step 202: described media gateway judges the office direction type of this calling according to described office direction parameter, obtain a judged result;
Step 203: when described judged result indicates the office direction type of this calling to be internetworking intercommunication office direction, be the medium surface distribution outside ip address of this calling;
Step 204: when described judged result indicates the office direction type of this calling to be non-internetworking intercommunication office direction, be the medium surface distribution implicit IP address of this calling.
In step 201, the intercommunication soft switch can be distinguished the outgoing of internetworking intercommunication office direction.For the outgoing of internetworking intercommunication office direction, the intercommunication soft switch is indicated the out side of this calling of intercommunication media gateway by the carrying foundation order of Mc interface in striking out carrying creation facilities program (CFP) be internetworking intercommunication office direction; For the outgoing of non-internetworking intercommunication office direction, the out side that the intercommunication soft switch is set up logical this calling of media gateway of order indicating in the Mc interface carrying of striking out carrying creation facilities program (CFP) is non-internetworking intercommunication office direction.
The intercommunication soft switch can also be distinguished the calling of internetworking intercommunication office direction.For the calling of internetworking intercommunication office direction, the intercommunication soft switch is indicated the Incoming side of this calling of intercommunication media gateway by the carrying foundation order of Mc interface in Incoming carrying creation facilities program (CFP) be internetworking intercommunication office direction; For the calling of non-internetworking intercommunication office direction, the Incoming side that the intercommunication soft switch is set up this calling of order indicating intercommunication media gateway in the Mc interface carrying of Incoming carrying creation facilities program (CFP) is non-internetworking intercommunication office direction.
In addition, the IP address that the intercommunication media gateway also will be set up for IP carrying in advance is divided into 2 set, implicit IP address set and outside ip address set, and address set can define as requested.
Like this, in step 203 and step 204, the intercommunication media gateway is received carrying foundation order in striking out carrying creation facilities program (CFP), find its indicating the out side of this calling be internetworking intercommunication office direction, distribute the IP address of a free time from the outside ip address set when carrying out address assignment; Internetworking intercommunication office direction as non-in its indicating is distributed the IP address of a free time internally in the IP address set when carrying out address assignment.
The intercommunication media gateway receives that in Incoming carrying creation facilities program (CFP) carrying sets up order, find its indicating the Incoming side of this calling be internetworking intercommunication office direction, distribute the IP address of a free time from the outside ip address set when carrying out address assignment; Internetworking intercommunication office direction as non-in its indicating is distributed the IP address of a free time internally in the IP address set when carrying out address assignment.
When specific implementation, the intercommunication soft switch is set up this calling of order (ADD order) indication intercommunication media gateway by the carrying of Mc interface in striking out/Incoming carrying creation facilities program (CFP) be internetworking intercommunication office direction, so that the intercommunication media gateway is distributed outside ip address.Above-mentioned internetworking intercommunication office direction indication can by H.248 defining new information bag International GMSC indicator Package realization in agreement, be defined as follows:
International?GMSC?indicator?Package：
(1) bag ID and version bag ID:igip (0x00ff) version: 1 expansion: nothing
(2) attribute: between net, gateway exchange office direction designator Property ID: ISCdirection (0x0001) describes: between net, the gateway exchange office direction represents type: enumerate value: 1: internetworking intercommunication office direction, 0: non-internetworking intercommunication office direction; Feature: read/write
(3) event: nothing
(4) signal: nothing
(5) statistics: nothing
(6) support the soft switch/Media Gateway Controller (MGC) of this bag to judge whether media gateway supports this bag by audit.
Can carry out following operation after supporting the media gateway of this bag to receive relevant indication in the ADD order:
Be internetworking intercommunication office direction as gateway exchange office direction designator value between net, media gateway is distributed the IP address of a free time from the outside ip address space.
Be non-internetworking intercommunication office direction as gateway exchange office direction designator value between net, media gateway is distributed the IP address of a free time internally in IP address space.
Complete the distribution of medium surface IP address according to the said method of the embodiment of the present invention after, for internetworking intercommunication office direction, the outside ip address that the intercommunication media gateway is distributed passes to the intercommunication soft switch by the carrying creation facilities program (CFP), then passes to Softswitch and the media gateway device of opposite end operator by the intercommunication soft switch.Particularly, media gateway is encapsulated in the medium surface IP address of distributing in the message of Mc interface and reports Softswitch, and Softswitch distributes media gateway by APM (Tunnel Data) message medium surface IP address passes to the Softswitch of opposite end.
Corresponding to said method, the embodiment of the present invention also provides a kind of soft switchcall server.
With reference to Fig. 3, the soft switchcall server of the embodiment of the present invention comprises: Softswitch 10 and media gateway 20, wherein:
Described Softswitch 10 is used for sending carrying to described media gateway 20 and sets up order, and described carrying is set up in order and carried the office direction parameter that interconnects;
Described media gateway 20, be used for judging according to described office direction parameter the office direction type of this calling, obtain a judged result, when described judged result indicates the office direction type of this calling to be internetworking intercommunication office direction, medium surface distribution outside ip address for this calling, when described judged result indicates the office direction type of this calling to be non-internetworking intercommunication office direction, be the medium surface distribution implicit IP address of this calling.
With reference to Fig. 4, described media gateway 20 specifically comprises:
In addition, also can comprise in described media gateway 20:
In sum, the present invention is by the inside and outside IP address set of configuration in the intercommunication media gateway, directly indicated the intercommunication media gateway device to distribute outside ip address to internetworking intercommunication office direction in loading establishing process by the intercommunication Softswitch, the fail safe of medium surface address when having improved the internetworking intercommunication, need not simultaneously to revise the medium surface IP address that encapsulates in the application layer signaling, avoid the transformation to NAT device.
Should be noted that at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from the spiritual scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (9)
1. the medium surface address distribution method during an IP carrying is set up is characterized in that, comprises the steps:
Media gateway receives the carrying foundation order that Softswitch sends, and described carrying is set up in order and carried the office direction parameter that interconnects;
Described media gateway judges the office direction type of this calling according to described office direction parameter, obtain a judged result; And
When described judged result indicates the office direction type of this calling to be internetworking intercommunication office direction, be the medium surface distribution outside ip address of this calling.
2. media address distribution method as claimed in claim 1, is characterized in that, also comprises:
When described judged result indicates the office direction type of this calling to be non-internetworking intercommunication office direction, be the medium surface distribution implicit IP address of this calling.
3. media address distribution method as claimed in claim 1 or 2, is characterized in that, also comprises:
The IP address that described media gateway will be set up for IP carrying in advance is divided into 2 set: implicit IP address set and outside ip address set.
4. media address distribution method as claimed in claim 1 or 2 is characterized in that:
Described office direction parameter is gateway exchange office direction designator between net.
5. a media gateway, is characterized in that, comprising:
Receiver module is used for receiving the carrying foundation order that Softswitch sends, and described carrying is set up in order and carried the office direction parameter that interconnects;
Judge module the office direction type of this calling obtains a judged result for judging according to described office direction parameter; And
Address assignment module is used for when described judged result indicates the office direction type of this calling to be internetworking intercommunication office direction, is the medium surface distribution outside ip address of this calling.
6. media gateway as claimed in claim 5, is characterized in that, described address assignment module also is used for:
When described judged result indicates the office direction type of this calling to be non-internetworking intercommunication office direction, be the medium surface distribution implicit IP address of this calling.
7. media gateway as described in claim 5 or 6, is characterized in that, also comprises:
Configuration module, the IP address that is used for being used for IP carrying foundation is divided into 2 set: implicit IP address set and outside ip address set.
8. a soft switchcall server, comprise Softswitch and media gateway, it is characterized in that:
Described Softswitch is used for sending carrying to described media gateway and sets up order, and described carrying is set up in order and carried the office direction parameter that interconnects;
Described media gateway, be used for judging according to described office direction parameter the office direction type of this calling, obtain a judged result, when described judged result indicates the office direction type of this calling to be internetworking intercommunication office direction, be the medium surface distribution outside ip address of this calling.
9. soft switchcall server as claimed in claim 8, is characterized in that, described media gateway also is used for:
When described judged result indicates the office direction type of this calling to be non-internetworking intercommunication office direction, be the medium surface distribution implicit IP address of this calling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110425166.4A CN103167053B (en) | 2011-12-16 | 2011-12-16 | IP carries the medium surface address distribution method in setting up, equipment and soft switchcall server |
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| CN201110425166.4A CN103167053B (en) | 2011-12-16 | 2011-12-16 | IP carries the medium surface address distribution method in setting up, equipment and soft switchcall server |
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| CN103167053B CN103167053B (en) | 2016-06-29 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997997A (en) * | 2010-11-19 | 2011-03-30 | 太仓市同维电子有限公司 | System for realizing Internet telephony call transfer by utilizing SIP protocol and method thereof |
| KR101080383B1 (en) * | 2010-05-24 | 2011-11-07 | 주식회사 네이블커뮤니케이션즈 | Method for voice over internet protocol call setup and communication system performing the same |
| CN102255906A (en) * | 2011-07-08 | 2011-11-23 | 中国联合网络通信集团有限公司 | Data transmission and receiving methods, equipment and systems |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101080383B1 (en) * | 2010-05-24 | 2011-11-07 | 주식회사 네이블커뮤니케이션즈 | Method for voice over internet protocol call setup and communication system performing the same |
| CN101997997A (en) * | 2010-11-19 | 2011-03-30 | 太仓市同维电子有限公司 | System for realizing Internet telephony call transfer by utilizing SIP protocol and method thereof |
| CN102255906A (en) * | 2011-07-08 | 2011-11-23 | 中国联合网络通信集团有限公司 | Data transmission and receiving methods, equipment and systems |
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