CN1487700A - Intercommunication deputizing device and system and method for intercommunicating networks of different protocol - Google Patents
Intercommunication deputizing device and system and method for intercommunicating networks of different protocol Download PDFInfo
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Abstract
The present invention is system and method for intercommunication between network with different protocols. The system includes at least two independent IP networks with different protocols and intercommunication deputy for protocol converting of message packages in different networks. The intercommunication deputy includes at least one intercommunication deputy unit, which consists of message receiving module, message sending module and protocol conversion module, for protocol conversion. During intercommunication between networks of different protocols, the intercommunication deputy converts the message package into protocol capable of being distinguished by the intercommunication network to converge port and ensure simultaneous intercommunication with several protocols in the networking environment.
Description
The present invention relates to IP (Internet Protocol, the Internet protocol) communications field, the protocol conversion device and intercommunicating system and the interoperability methods thereof that are specifically related between networks of different protocol, carry out intercommunication.
Along with the development of IP technology, IP operation has comprised the big focus since phone, fax, multimedia communication become internet development.The IP operation network generally by GW (Gateway, gateway), GK (Gatekeeper, gatekeeper), support the transmission network of IP operation, and corresponding webmaster, charging and business system constitute.It is the key equipment of entire I P network that IP network is kept, be responsible for to make up IP network and finish IP network routing management, safety management and with the docking of other networks, because different existence of runing interest group, the gatekeeper also must provide the charging/settlement function between the heterogeneous networks.
At present, IP telephone service equipment mainly is based on the H.323 agreement of ITU (International Telecommunications Union), but the distinct device that each operator adopts is to the choice difference of expansion, requirement and some agreement items of agreement.Clear for describing, below will expand and require different agreements to be considered as different agreement, the network of forming based on the equipment of different Extended Protocols is called networks of different protocol, otherwise is the same protocol network.Carrying out the IP conversation between the same protocol network implements fairly simple, phone is by the relaying IAD, finish PSTN (Public Switched Telephone Network by gateway, public switched telephone network) to the conversion of IP, send routing inquiry request to the gatekeeper, and connect according to routing address and the other side's gateway; Gateway compresses the digital signal on the relaying and is sent to the other side's gateway behind the closing of the circuit, and the decompression of the other side's gateway is reduced into the voice signal on the relaying.Because agreement is identical between network, transmitting-receiving side can discern signaling packet and normally continue.
Need system to support different procotols for carrying out intercommunication between the networks of different protocol, generally directly intercommunication between the networks of different protocol now.Even the equipment that the equipment supplier who has provides can compatible various protocols, but a kind of equipment also can only adopt a kind of agreement operation during actual the operation, promptly this equipment can only carry out intercommunication with a kind of operator of same protocol, and can not be simultaneously and the various protocols network carry out intercommunication, have significant limitation.
In view of above-mentioned, the objective of the invention is to solve in the prior art limitation of can not be simultaneously carrying out intercommunication with various protocols, a kind of interworking agent that can support various protocols is provided, and based on the networks of different protocol intercommunicating system and the interoperability methods of this interworking agent, it can realize that a set of environments simultaneously carries out intercommunication with the operator of a plurality of different agreements, and is not subjected to the restriction of specific protocol.
For realizing above purpose, an aspect of of the present present invention provides a kind of interworking agent, it is characterized in that comprising at least an interworking agent unit that carries out protocol conversion, described interworking agent unit comprises message sink module, message transmission module, and connects described message sink module and message transmission module wraps in message the protocol conversion module that carries out protocol conversion between intercommunication network and the local network.
Wherein, the number of described interworking agent unit is determined according to call capacity and intercommunication network number.
Further, the intercommunication network number of described interworking agent unit and different agreement is consistent, and reception, conversion and the transmission of message bag between a kind of intercommunication network of different agreement and the local network finished in interworking agent unit.
Further, for different agreement intercommunication network capacious, reception, conversion and transmission that message bag between this intercommunication network and the local network is handled in a plurality of interworking agents unit are set.
Another aspect of the present invention provides a kind of system that sets up intercommunication between networks of different protocol, this system comprises at least two independently different IP network of agreement, each IP network all comprises gateway, gatekeeper, it is characterized in that: also comprise the interworking agent that the message bag between the networks of different protocol is carried out protocol conversion.
Wherein, described interworking agent comprises an interworking agent unit that carries out protocol conversion at least, described interworking agent unit comprises message sink module, message transmission module, and connects described message sink module and message transmission module wraps in message the protocol conversion module that carries out protocol conversion between the networks of different protocol.
Wherein, the number of described interworking agent unit is determined according to the networks of different protocol number of call capacity and intercommunication.
Further, the networks of different protocol number of described interworking agent unit and intercommunication is consistent, and reception, conversion and the transmission of message bag between a kind of intercommunication networks of different protocol and the local network finished in an interworking agent unit.
Further, for networks of different protocol capacious, reception, conversion and transmission that message bag between the networks of different protocol of this intercommunication and the local network is handled in a plurality of interworking agents unit are set.
One side more of the present invention provides a kind of method of carrying out intercommunication between networks of different protocol, comprises step:
A, initiate a call to interworking agent by the calling party gateway;
The message related to calls bag of setting up that b, interworking agent will be received is converted to callee's procotol message bag, and is transmitted to callee's gateway, inquires about routing iinformation to callee gatekeeper simultaneously;
C, callee's gateway receive the message bag of being sent by interworking agent, and respond Alerting (prompting) message and give interworking agent with Connect (connection) message;
D, interworking agent unit send to called gateways Alerting is become calling party's procotol message bag with the Connect message conversion after, realize continuing of calling.
The effect of the inventive method is: by interworking agent forwarded call message, played the convergence port, the effect of identification protocol type, accomplished to support simultaneously the various protocols flow process from gateway simultaneously, so just guaranteed that same network environment can be simultaneously carries out intercommunication and is not limited to the certain protocol agreement with the networks of different protocol of a plurality of operators.
Describe in detail below in conjunction with drawings and Examples.
Fig. 1 is an interworking agent theory diagram of the present invention;
Fig. 2 is the theory diagram of interworking agent unit among Fig. 1;
Fig. 3 is the intercommunicating system schematic diagram of networks of different protocol of the present invention.
As shown in Figure 3, network 1, network 2 ..., network M is respectively different IP network, each network all has gatekeeper, gateway, all use the consolidated network agreement in each IP network inside, but the agreement between each network is inconsistent.Clear for illustrating, present embodiment is a local network with network 1, he by interworking agent and network 2, network 3 ..., network M carries out intercommunication, network 2, network 3 ..., network M is intercommunication network.Interworking agent is registered to the gatekeeper of local network and the gatekeeper of intercommunication network simultaneously as gateway, in the networks of different protocol intercommunication to the message related to calls bag receive, protocol conversion and transmission.Therefore, the intercommunication network that local network, interworking agent and at least one are different from native protocol constitutes the IP intercommunicating system jointly, and interworking agent is the key of this intercommunicating system.
According to Fig. 1, interworking agent is made up of one group of interworking agent unit, can be according to the number how many interworking agent unit is set of capacity and intercommunication network.Interworking agent unit is provided with a kind of interworking protocol and the local gateway agreement realizes two kinds of conversions between the agreement during realization, so the networks of different protocol number of interworking agent unit and intercommunication is consistent.If big, a plurality of interworking agents unit can also be set act on behalf of this agreement with certain IP network intercommunication capacity.See that to external interworking agent is acting server or the server group that can support a plurality of interworking protocols, realized realizing intercommunication with a kind of gateway of agreement and the operator of multiple different agreement.
Fig. 2 is the theory diagram of interworking agent unit, and each interworking agent unit comprises message sink module, protocol conversion module, message transmission module.The message sink module is responsible for receiving the H.323 message bag that the caller gateway is sent, and by protocol conversion module the message bag is carried out protocol conversion then, and the message bag after will changing via message transmission module sends to called gateway.
Below in conjunction with intercommunicating system, be that to be described in detail in networks of different protocol be the method for carrying out intercommunication between local network and the intercommunication network to example with local network (calling party) call intercommunication network (callee).
At first, initiate IP by the calling party gateway and call out interworking agent.In the present embodiment, the local network gateway will be set up message related to calls bag (Setup message bag) and be dealt into the interworking agent unit of supporting callee's agreement in the interworking agent;
Then, the message related to calls bag of setting up that corresponding interworking agent unit will be received is converted to callee's procotol message bag, and is transmitted to callee's gateway, inquires about routing iinformation to callee gatekeeper simultaneously;
Callee's gateway receives the message bag of being sent by the interworking agent unit, because the message bag converts callee's agreement to through interworking agent, so callee's gateway can be discerned the message bag that receives.Callee's gateway is given interworking agent according to message related to calls bag response Alerting (prompting) message of setting up that receives with Connect (connection) message;
The interworking agent unit sends to called gateways Alerting is become calling party's procotol message bag with the Connect message conversion after, realizes continuing of calling.
Identical for intercommunication network calling local network and said process.
More than be the general process that between networks of different protocol, carries out intercommunication,, then finish Route Selection, comprise and select the interworking agent unit by the calling party gatekeeper if intercommunication network is many.When the calling party makes a call, GK finishes Route Selection according to called number by caller, selects the address of called gateway.The corresponding a plurality of intercommunication networks of same called number possibility, for example a plurality of operators manage the business of areal simultaneously.At this moment GK is according to some prices, and policy selection such as time and performance one tame operator is promptly with the intercommunication network complete connection of this operator.If the only corresponding operator of this called number then also has only an intercommunication network to continue.At first call out and be dealt on the corresponding interworking agent unit, when the corresponding intercommunication network in an interworking agent unit, route just drops on this interworking agent unit, if the corresponding intercommunication network in a plurality of interworking agents unit, GK selects route to drop on which unit according to the priority of interworking agent unit.
Because the present invention, has played the effect of convergence port by interworking agent forwarded call message, has shielded the agreement difference between gateway, can realize the intercommunication between local gateway while and the various protocols like this.
Claims (10)
1, a kind of interworking agent device, it is characterized in that, at least comprise an interworking agent unit that carries out protocol conversion, described interworking agent unit comprises message sink module, message transmission module, and connect described message sink module and message transmission module, message is wrapped in the protocol conversion module that carries out protocol conversion between intercommunication network and the local network.
2, interworking agent device according to claim 1 is characterized in that, the number of described interworking agent unit is determined according to call capacity and intercommunication network number.
3, interworking agent device according to claim 1 and 2, it is characterized in that, the intercommunication network number of described interworking agent unit and different agreement is consistent, and reception, conversion and the transmission of message bag between a kind of intercommunication network of different agreement and the local network finished in interworking agent unit.
4, interworking agent device according to claim 1 and 2 is characterized in that, for different agreement intercommunication network capacious, reception, conversion and transmission that message bag between this intercommunication network and the local network is handled in a plurality of interworking agents unit is set.
5, a kind of system that between networks of different protocol, sets up intercommunication, this system comprises at least two independently different IP network of agreement, each IP network all comprises gateway, gatekeeper, it is characterized in that: also comprise the interworking agent that the message bag between the networks of different protocol is carried out protocol conversion.
6, the system that between networks of different protocol, sets up intercommunication according to claim 5, it is characterized in that: described interworking agent comprises an interworking agent unit that carries out protocol conversion at least, described interworking agent unit comprises message sink module, message transmission module, and connects described message sink module and message transmission module wraps in message the protocol conversion module that carries out protocol conversion between the networks of different protocol.
7, intercommunicating system according to claim 6 is characterized in that: the number of described interworking agent unit is determined according to the networks of different protocol number of call capacity and intercommunication.
8, according to claim 6 or 7 described intercommunicating systems, it is characterized in that: the networks of different protocol number of described interworking agent unit and intercommunication is consistent, and reception, conversion and the transmission of message bag between a kind of intercommunication networks of different protocol and the local network finished in an interworking agent unit.
9, according to claim 6 or 7 described intercommunicating systems, it is characterized in that:, reception, conversion and transmission that message bag between the networks of different protocol of this intercommunication and the local network is handled in a plurality of interworking agents unit are set for networks of different protocol capacious.
10, a kind of method of carrying out intercommunication between networks of different protocol comprises step:
A, initiate a call to interworking agent by the calling party gateway;
The message related to calls bag of setting up that b, interworking agent will be received is converted to callee's procotol message bag, and is transmitted to callee's gateway, inquires about routing iinformation to callee gatekeeper simultaneously;
C, callee's gateway receive the message bag of being sent by interworking agent, and respond Alerting (prompting) message and give interworking agent with Connect (connection) message;
D, interworking agent unit send to called gateways Alerting is become calling party's procotol message bag with the Connect message conversion after, realize continuing of calling.
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| CN 01103595 CN1266886C (en) | 2001-03-10 | 2001-03-10 | Intercommunication deputizing device and system and method for intercommunicating networks of different protocol |
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| CN 01103595 CN1266886C (en) | 2001-03-10 | 2001-03-10 | Intercommunication deputizing device and system and method for intercommunicating networks of different protocol |
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