CN100546285C - Realize method, system and the Session Border Controller of Interworking gateway application layer route - Google Patents

Realize method, system and the Session Border Controller of Interworking gateway application layer route Download PDF

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Publication number
CN100546285C
CN100546285C CN200710107192.6A CN200710107192A CN100546285C CN 100546285 C CN100546285 C CN 100546285C CN 200710107192 A CN200710107192 A CN 200710107192A CN 100546285 C CN100546285 C CN 100546285C
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session border
border controller
soft switch
local terminal
address
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CN101056269A (en
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张晋
毛金强
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN200710107192.6A priority Critical patent/CN100546285C/en
Publication of CN101056269A publication Critical patent/CN101056269A/en
Priority to PCT/CN2008/070780 priority patent/WO2008138245A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/2514—Translation of Internet protocol [IP] addresses between local and global IP addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1033—Signalling gateways
    • H04L65/104—Signalling gateways in the network

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention discloses a kind of method that realizes Interworking gateway application layer route: mutual distribution message between the described Session Border Controller comprises the corresponding relation of subordinate's soft switch of local terminal Session Border Controller and public network port, the public network IP address of local terminal Session Border Controller in the described distribution message; The opposite end Session Border Controller distributes corresponding private network port for the soft switch in the distribution message that receives, and described private network port is corresponding one by one with described opposite end Session Border Controller subordinate's soft switch; The message that described opposite end Session Border Controller subordinate's soft switch sends, carry out the opposite end address transition by described opposite end Session Border Controller, carry out the local terminal address transition by described local terminal Session Border Controller, send to described local terminal Session Border Controller subordinate's soft switch.The invention discloses a kind of Session Border Controller of realizing Interworking gateway application layer route.The present invention has saved a large amount of public network IP address, the application layer routing configuration process of simplification.

Description

Realize method, system and the Session Border Controller of Interworking gateway application layer route
Technical field
The present invention relates to Internet technical field, relate in particular to a kind of method, system and Session Border Controller of realizing Interworking gateway application layer route.
Background technology
Along with popularizing of IP (Internet Protocol, Internet protocol) technology, IP network has been obtained application more and more widely as the NGN (Next Generation Network, next generation network) of bearer network.In the NGN network, SBC (Session Border Controller, Session Border Controller) carries out intercommunication between the soft switch as Interworking gateway, and SBC is bearing the functions such as protocol conversion of charging, signaling protocol conversion, medium in Interworking gateway.
As shown in Figure 1, comprise soft switch a in the NGN network, a user terminal a is arranged below the soft switch a; Comprise soft switch b in another NGN network, a user terminal b is arranged below the soft switch b.If the user terminal a below the soft switch a wishes to call out the user terminal b under the soft switch b, must be with SIP (SessionInitial Protocol, conversation initialized protocol) or other VoIP (Voice ofIP, IP-based voice) signaling message sends on the SBC, after SBC resolves through signaling, source and destination address, port in the conversion message send to soft switch b with newly-generated SIP signaling message then, and follow-up signaling message all passes through similar forwarding process.Through behind the Signalling exchange, the media information of SBC by extracting from signaling message created medium and transmitted, and user terminal a directly sends to media information on the SBC, SBC transmits according to medium media information is forwarded to user terminal b, thereby realizes the intercommunication of two NGN networks.
In the evolution process of NGN network, intercommunication gateway equipment develops into a plurality of soft switch from the intercommunication that realizes two soft switch and exchanges visits from traditional PSTN (Public Switched Telephone Network, PSTN).SBC is by the application layer route of configuring static, and back new source and destination address and port are changed in decision.Configuration is comparatively complicated, because of normally twocouese configuration of Interworking gateway, and old destination address, new source address, new destination address all are essential configurations, all the other also may comprise old destination interface, protocol type, VPN (Virtual Private Network, Virtual Private Network) and wait other configuration information.
Existing application layer routing mode is to decide new source and destination address according to old destination address, if SBC connects a plurality of soft switch, just is necessary for SBC and disposes a plurality of public network IP in the public network side.Because the particularity of intercommunication gateway equipment, the waste of public network IP address and the complexity of configuration are become the bottleneck that intercommunication gateway equipment develops, when the soft switch that connects reaches hundreds and thousands of, configuration just becomes a very difficult task, this point is that institute of many operators is unacceptable, especially when SBC connects some little sip servers, obviously be impossible for it provides a public network IP separately.
Summary of the invention
The embodiment of the invention provides a kind of method, system and Session Border Controller of realizing Interworking gateway application layer route, with waste and the complicated defective of configuration that solves public network IP address in the prior art.
The embodiment of the invention provides a kind of method that realizes Interworking gateway application layer route, is applied to comprise the system of at least two Session Border Controllers, described each at least one soft switch of Session Border Controller subordinate, and described method comprises:
Mutual distribution message comprises the corresponding relation of subordinate's soft switch of local terminal Session Border Controller and public network port, the public network IP address of local terminal Session Border Controller between the described Session Border Controller in the described distribution message;
The opposite end Session Border Controller distributes corresponding private network port for the soft switch in the distribution message that receives, and described private network port is corresponding one by one with described opposite end Session Border Controller subordinate's soft switch;
The message that described opposite end Session Border Controller subordinate's soft switch sends, carry out the opposite end address transition by described opposite end Session Border Controller, carry out the local terminal address transition by described local terminal Session Border Controller, send to described local terminal Session Border Controller subordinate's soft switch.
The embodiment of the invention also provides a kind of Session Border Controller of realizing Interworking gateway application layer route, be applied to comprise the system of at least two Session Border Controllers, described each at least one soft switch of Session Border Controller subordinate, described Session Border Controller specifically comprises:
Distribution message interaction unit, be used for distributing message alternately with system other Session Border Controller, described distribution message comprises the corresponding relation of described local terminal Session Border Controller subordinate's soft switch and public network port, the public network IP address of local terminal Session Border Controller;
Private network port assignment unit is used to the soft switch in the distribution message of reception to distribute the private network port, and described private network port is corresponding one by one with described local terminal Session Border Controller subordinate's soft switch;
Send the message address converting unit, be used for the private network message that local terminal Session Border Controller subordinate soft switch sends is converted to public net message, send to the opposite end Session Border Controller;
Receive the message address converting unit, be used for the public net message that the opposite end Session Border Controller is sent is converted to the private network message of local terminal, send to local terminal Session Border Controller subordinate soft switch.
The embodiment of the invention also provides a kind of system that realizes Interworking gateway application layer route, comprises at least two Session Border Controllers, described each at least one soft switch of Session Border Controller subordinate, and described Session Border Controller specifically comprises:
Distribution message interaction unit, be used for distributing message alternately with system other Session Border Controller, described distribution message comprises the corresponding relation of described local terminal Session Border Controller subordinate's soft switch and public network port, the public network IP address of local terminal Session Border Controller;
Private network port assignment unit is used to the soft switch in the distribution message of reception to distribute the private network port, and described private network port is corresponding one by one with described local terminal Session Border Controller subordinate's soft switch;
Send the message address converting unit, be used for the private network message that local terminal Session Border Controller subordinate soft switch sends is converted to public net message, send to the opposite end Session Border Controller;
Receive the message address converting unit, be used for the public net message that the opposite end Session Border Controller is sent is converted to the private network message of local terminal, send to local terminal Session Border Controller subordinate soft switch.
In the embodiments of the invention, by between SBC, connecting, and necessary address and the port correspondence relationship information of exchange, SBC just can generate the application layer routing configuration automatically, and on the public network between SBC and the SBC, only use unique IP address to carry out Signalling exchange.Therefore, saved a large amount of public network IP address, the application layer routing configuration process of simplification.
Description of drawings
Fig. 1 uses SBC to realize interworking architecture figure between the soft switch in the prior art;
Fig. 2 is a kind of system construction drawing of realizing Interworking gateway application layer route of the embodiment of the invention;
Fig. 3 is a kind of Session Border Controller structure chart of the embodiment of the invention;
Fig. 4 is the another kind of Session Border Controller structure chart of the embodiment of the invention;
Fig. 5 is the another kind of Session Border Controller structure chart of the embodiment of the invention;
Fig. 6 is a kind of method flow diagram of realizing Interworking gateway application layer route of the embodiment of the invention;
Fig. 7 is the method flow diagram that the embodiment of the invention dynamically arranges Interworking gateway application layer route.
Embodiment
A kind of system that realizes Interworking gateway application layer route of the embodiment of the invention, as shown in Figure 2, comprise Session Border Controller a, Session Border Controller b, Session Border Controller c, these three Session Border Controllers interconnect by public network, Session Border Controller a connects soft switch a, Session Border Controller b connects soft switch b, and Session Border Controller c connects soft switch c.Wherein can comprise a plurality of Session Border Controllers in this system, each Session Border Controller also can connect a plurality of soft switch.
Wherein the Session Border Controller concrete structure as shown in Figure 3, comprise: distribution message interaction unit 100, be used for distributing message alternately, comprise the corresponding relation of public network IP address, the subordinate's soft switch of local terminal Session Border Controller and the public network port of local terminal Session Border Controller in the distribution content of message with system other Session Border Controller; Private network port assignment unit 200 is used to the soft switch in the distribution message of reception to distribute the private network port, and the private network port is corresponding one by one with local terminal Session Border Controller subordinate's soft switch; Send message address converting unit 400, be used for the private network message that local terminal Session Border Controller subordinate soft switch sends is converted to public net message, send to the opposite end Session Border Controller; Receive message address converting unit 300, be used for the public net message that the opposite end Session Border Controller is sent is converted to the private network message of local terminal, send to local terminal Session Border Controller subordinate soft switch.
The corresponding relation of above-mentioned local terminal soft switch and local terminal private network port preexists in the Session Border Controller usually, or need to be provided with temporarily, therefore Session Border Controller should be as shown in Figure 4, also comprise: first correspondence relation storage 500 is used to be provided with the corresponding relation of local terminal soft switch and local terminal private network port; Second correspondence relation storage 600 is used to be provided with the corresponding relation of local terminal soft switch and local terminal public network port.
In addition, if a certain Session Border Controller subordinate's soft switch increases or reduces, this Session Border Controller need upgrade corresponding relation, therefore, as shown in Figure 5, also comprise corresponding relation updating block 700, when being used for Session Border Controller subordinate soft switch increase or minimizing, upgrade corresponding relation with other Session Border Controller subordinate soft switch.
Transmission message address converting unit 400 among Fig. 3 to 5 further comprises: destination address is determined subelement, with the private net address of local terminal Session Border Controller as old destination address, with the public network address of opposite end Session Border Controller as new destination address; Destination interface is determined subelement, with the private network port of local terminal Session Border Controller as old destination interface, with the public network port of opposite end Session Border Controller as new destination interface; Source address is determined subelement, with the public network address of local terminal Session Border Controller as new source address; Source port is determined subelement, is that the public network port that distributes of soft switch is as new source port with the local terminal Session Border Controller.
Receiving message address converting unit 300 further comprises: destination address is determined subelement, with the public network address of local terminal Session Border Controller as old destination address, with local terminal Session Border Controller subordinate's soft switch as new destination address; Destination interface is determined subelement, with the public network port of local terminal Session Border Controller as old destination interface; Source address is determined subelement, with the public network address of opposite end Session Border Controller as old source address, with the private net address of local terminal Session Border Controller as new source address; Source port is determined subelement, with the public network port of opposite end Session Border Controller as old source port, with the private network port of local terminal Session Border Controller as new source port.
The embodiment of the invention also provides a kind of method that realizes Interworking gateway application layer route, as shown in Figure 6, may further comprise the steps:
Step s601, mutual distribution message is distributed the corresponding relation that comprises public network IP address, the subordinate's soft switch of local terminal Session Border Controller and the public network port of local terminal Session Border Controller in the message between the Session Border Controller.Wherein, Session Border Controller also comprises before distributing message alternately: Session Border Controller is provided with the public network port of itself and the corresponding relation of subordinate's soft switch.
Step s602, the opposite end Session Border Controller distributes corresponding private network port for the soft switch in the distribution message that receives at the opposite end Session Border Controller, and this private network port is corresponding one by one with opposite end Session Border Controller subordinate's soft switch.Wherein, the opposite end Session Border Controller also comprises before distributing corresponding private network port for soft switch in the distribution message: the opposite end Session Border Controller is provided with the public network port of itself and the corresponding relation of subordinate's soft switch.
Step s603, the message that opposite end Session Border Controller subordinate's soft switch sends, carry out the opposite end address transition by the opposite end Session Border Controller, carry out the local terminal address transition, send to local terminal Session Border Controller subordinate's soft switch by the local terminal Session Border Controller.Wherein, the opposite end address transition specifically comprises: with the private net address of opposite end Session Border Controller and private network port as application layer route old destination address and destination interface, with the opposite end Session Border Controller is that the public network port that distributes of soft switch is as new source port, with the public network address of opposite end Session Border Controller as new source address, with the public network address of local terminal Session Border Controller and public network port as new destination address and destination interface.The local terminal address transition specifically comprises: with the public network address of opposite end Session Border Controller and public network port as old source address and source port, with the public network address of local terminal Session Border Controller and public network port as old destination address and destination interface; With the private network port of local terminal Session Border Controller and private net address as new source address and source port, with the soft switch of local terminal Session Border Controller subordinate correspondence as new destination address.
After the step s603, when Session Border Controller subordinate soft switch increases or reduces, upgrade corresponding relation with other Session Border Controller subordinate soft switch, specifically comprise: the Session Border Controller of initiating to upgrade sends update request to other Session Border Controller, comprise the soft switch of renewal in the update request, and corresponding public network port; Receive the Session Border Controller of update request, upgrade corresponding corresponding relation, and will return and upgrade response according to the soft switch in the update request; The Session Border Controller of initiating to upgrade upgrades local corresponding relation.Wherein, when Session Border Controller subordinate soft switch reduced, the Session Border Controller of initiating to upgrade upgraded local corresponding relation and specifically comprises: behind the corresponding relation of deletion private net address and soft switch, discharge the public network port of soft switch correspondence automatically.
With in the NGN network, the embodiment that adopts the method that dynamically arranges Interworking gateway application layer route as shown in Figure 7, may further comprise the steps for example describes the present invention in detail below:
Step s701, the SBC adding group in a convergence domain, and unique public network IP address of interior all SBC of configuration group.Wherein, convergence domain comprises the SBC and the subordinate's of a plurality of intercommunications soft switch.
Step s702, SBC is that each soft switch in the local private network distributes a public network port dynamically, this public network port can not duplicate allocation, this corresponding relation is corresponding one by one, and it is reversible, if and the corresponding relation of last private net address of SBC and soft switch is deleted, then Dui Ying public network port also is released automatically.
Step s703, SBC sends to all SBC in the group with the corresponding relation of soft switch address in the private network and public network port.
Step s704, SBC creates the application layer routing table according to above-mentioned corresponding relation.
Be example with SBC wherein below, this equipment be described after receiving the distribution message that comprises corresponding relation, create local application layer routing table process.Wherein, specifying the SBC of distribution message is a; Receive the distribution message, and the SBC of establishment application layer route is b; The soft switch of SBC_a correspondence is soft switch a; The soft switch of SBC_b correspondence is soft switch b.After SBC_b receives the distribution message, be that each soft switch distributes a private network port in the message at private network side immediately, this private network port is corresponding one by one with the soft switch address on the SBC_a; With the private net address of SBC_b and private network port old destination address and port as the application layer route, SBC_b is gone up public network port for soft switch b distribution as new source port, with the public network address of SBC_b as source address, the public network address of SBC_a and public network port as new destination address and port, have just been created an application layer route from soft switch b to soft switch a automatically; The task that this application layer route is finished is with from soft switch b, and the signaling message that arrives SBC_b is forwarded to the public network address of SBC_a.
Make signaling message can arrive soft switch a, also will on SBC_a, dispose an application layer route automatically; This needs SBC_b also to send a distribution message that comprises soft switch address and public network port corresponding relation; SBC_a is that each soft switch (i.e. the public network port of a SBC_b) of SBC_b private network side distributes the port of a SBC_a private network side immediately, and guarantees the corresponding one by one of this corresponding relation.Then, with the public network address of SBC_b and public network port as old source address and port, with the public network address of SBC_a and public network port as old destination address and port, with the newly assigned private network port of SBC_a private network side and private net address as new source address and port, with soft switch a and public network port as new destination address and destination interface; This task of using route is to be forwarded to soft switch a from SBC_b, the signaling message that arrives SBC_a.
More than describing is to have set up an application layer route on SBC_a and SBC_b respectively, has guaranteed that the application layer route from soft switch b to soft switch a can reach, and in like manner, can be established to the application layer route of soft switch b from soft switch a, has just realized complete Interworking gateway.Reverse application layer route foundation is repeated no more, and its flow process and forward application layer route are identical.
In addition, if the soft switch of a certain SBC_a private network side increases or reduces, this SBC can send all SBC that upgrade the corresponding relation message to the adding group immediately, remaining SBC is through after resolving, upgrade local application layer route, and replying a bar response message immediately to SBC_a, SBC_a upgrades local application layer route according to message content.
In the embodiment of the invention, by the corresponding relation of setting soft switch and public network port, and each SBC uses well-determined public network IP address in the whole network, and mutual above-mentioned corresponding relation, has saved public network IP address; In addition, by the address translation feature that receives and send message is set, realized the automation configuration of communication route between the soft switch in SBC.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (16)

1, a kind of method that realizes Interworking gateway application layer route is applied to comprise the system of at least two Session Border Controllers, and described each at least one soft switch of Session Border Controller subordinate is characterized in that described method comprises:
Mutual distribution message comprises the corresponding relation of subordinate's soft switch of local terminal Session Border Controller and public network port, the public network IP address of local terminal Session Border Controller between the described Session Border Controller in the described distribution message;
The opposite end Session Border Controller distributes corresponding private network port for the soft switch in the distribution message that receives, and described private network port is corresponding one by one with described opposite end Session Border Controller subordinate's soft switch;
The message that described opposite end Session Border Controller subordinate's soft switch sends, carry out the opposite end address transition by described opposite end Session Border Controller, carry out the local terminal address transition by described local terminal Session Border Controller, send to described local terminal Session Border Controller subordinate's soft switch.
2, realize the method for Interworking gateway application layer route according to claim 1, it is characterized in that described Session Border Controller also comprises before distributing message alternately:
Described local terminal Session Border Controller is provided with the corresponding relation of subordinate's soft switch and described local terminal Session Border Controller public network port.
3, realize the method for Interworking gateway application layer route according to claim 1, it is characterized in that described opposite end Session Border Controller is that soft switch also comprises before distributing corresponding private network port in the described distribution message:
Described opposite end Session Border Controller is provided with the corresponding relation of subordinate's soft switch and described opposite end Session Border Controller private network port.
4, realize the method for Interworking gateway application layer route according to claim 1, it is characterized in that described opposite end address transition specifically comprises:
With the private net address of described opposite end Session Border Controller and private network port as application layer route old destination address and destination interface, with described opposite end Session Border Controller is that the public network port that distributes of described soft switch is as new source port, with the public network address of described opposite end Session Border Controller as new source address, with the public network address of described local terminal Session Border Controller and public network port as new destination address and destination interface.
5, realize the method for Interworking gateway application layer route according to claim 1, it is characterized in that described local terminal address transition specifically comprises:
With the public network address of opposite end Session Border Controller and public network port as old source address and source port, with the public network address of local terminal Session Border Controller and public network port as old destination address and destination interface; With the private network port of local terminal Session Border Controller and private net address as new source address and source port, with the soft switch of local terminal Session Border Controller subordinate correspondence as new destination address.
6, realize the method for Interworking gateway application layer route according to claim 1, it is characterized in that, when Session Border Controller subordinate soft switch increases or reduces, upgrade corresponding relation with other Session Border Controller subordinate soft switch.
As the method for realization Interworking gateway application layer route as described in the claim 6, it is characterized in that 7, described corresponding relation upgrades and specifically comprises:
The Session Border Controller of initiating to upgrade sends update request to other Session Border Controller, comprises the soft switch of renewal in the described update request, and corresponding public network port;
Receive the Session Border Controller of described update request, upgrade corresponding corresponding relation, and return and upgrade response according to the soft switch in the described update request;
The Session Border Controller that described initiation is upgraded upgrades local corresponding relation.
8, as the method for realization Interworking gateway application layer route as described in the claim 7, it is characterized in that, when described Session Border Controller subordinate soft switch reduces, the Session Border Controller that described initiation is upgraded upgrades local corresponding relation and specifically comprises: behind the corresponding relation of deletion private net address and described soft switch, discharge the public network port of described soft switch correspondence automatically.
9, a kind of Session Border Controller of realizing Interworking gateway application layer route, be applied to comprise the system of at least two Session Border Controllers, described each at least one soft switch of Session Border Controller subordinate is characterized in that described Session Border Controller specifically comprises:
Distribution message interaction unit, be used for distributing message alternately with system other Session Border Controller, described distribution message comprises the corresponding relation of described local terminal Session Border Controller subordinate's soft switch and public network port, the public network IP address of local terminal Session Border Controller;
Private network port assignment unit is used to the soft switch in the distribution message of reception to distribute the private network port, and described private network port is corresponding one by one with described local terminal Session Border Controller subordinate's soft switch;
Send the message address converting unit, be used for the private network message that local terminal Session Border Controller subordinate soft switch sends is converted to public net message, send to the opposite end Session Border Controller;
Receive the message address converting unit, be used for the public net message that the opposite end Session Border Controller is sent is converted to the private network message of local terminal, send to local terminal Session Border Controller subordinate soft switch.
10, as the Session Border Controller of realization Interworking gateway application layer route as described in the claim 9, it is characterized in that, also comprise:
First correspondence relation storage is used to be provided with the corresponding relation of local terminal soft switch and local terminal private network port;
Second correspondence relation storage is used to be provided with the corresponding relation of local terminal soft switch and local terminal public network port.
11, as the Session Border Controller of realization Interworking gateway application layer route as described in the claim 9, it is characterized in that, send the message address converting unit and further comprise:
Destination address is determined subelement, with the private net address of local terminal Session Border Controller as old destination address, with the public network address of opposite end Session Border Controller as new destination address;
Destination interface is determined subelement, with the private network port of local terminal Session Border Controller as old destination interface, with the public network port of opposite end Session Border Controller as new destination interface;
Source address is determined subelement, with the public network address of local terminal Session Border Controller as new source address;
Source port is determined subelement, is that the public network port that distributes of described soft switch is as new source port with the local terminal Session Border Controller.
12, as the Session Border Controller of realization Interworking gateway application layer route as described in the claim 9, it is characterized in that, receive the message address converting unit and further comprise:
Destination address is determined subelement, with the public network address of local terminal Session Border Controller as old destination address, with local terminal Session Border Controller subordinate's soft switch as new destination address;
Destination interface is determined subelement, with the public network port of local terminal Session Border Controller as old destination interface;
Source address is determined subelement, with the public network address of opposite end Session Border Controller as old source address, with the private net address of local terminal Session Border Controller as new source address;
Source port is determined subelement, with the public network port of opposite end Session Border Controller as old source port, with the private network port of local terminal Session Border Controller as new source port.
13, as the Session Border Controller of realization Interworking gateway application layer route as described in the claim 9, it is characterized in that, also comprise the corresponding relation updating block, when being used for Session Border Controller subordinate soft switch increase or minimizing, upgrade corresponding relation with other Session Border Controller subordinate soft switch.
14, a kind of system that realizes Interworking gateway application layer route comprises at least two Session Border Controllers, and described each at least one soft switch of Session Border Controller subordinate is characterized in that described Session Border Controller specifically comprises:
Distribution message interaction unit, be used for distributing message alternately with system other Session Border Controller, described distribution message comprises the corresponding relation of described local terminal Session Border Controller subordinate's soft switch and public network port, the public network IP address of local terminal Session Border Controller;
Private network port assignment unit is used to the soft switch in the distribution message of reception to distribute the private network port, and described private network port is corresponding one by one with described local terminal Session Border Controller subordinate's soft switch;
Send the message address converting unit, be used for the private network message that local terminal Session Border Controller subordinate soft switch sends is converted to public net message, send to the opposite end Session Border Controller;
Receive the message address converting unit, be used for the public net message that the opposite end Session Border Controller is sent is converted to the private network message of local terminal, send to local terminal Session Border Controller subordinate soft switch.
15, as the system of realization Interworking gateway application layer route as described in the claim 14, it is characterized in that described Session Border Controller also comprises:
First correspondence relation storage is used to be provided with the corresponding relation of local terminal soft switch and local terminal private network port;
Second correspondence relation storage is used to be provided with the corresponding relation of local terminal soft switch and local terminal public network port.
16, as the system of realization Interworking gateway application layer route as described in the claim 14, it is characterized in that, described Session Border Controller also comprises the corresponding relation updating block, when being used for Session Border Controller subordinate soft switch increase or minimizing, upgrade corresponding relation with other Session Border Controller subordinate soft switch.
CN200710107192.6A 2007-05-09 2007-05-09 Realize method, system and the Session Border Controller of Interworking gateway application layer route Expired - Fee Related CN100546285C (en)

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