CN101207547B - System and method for implementing intercommunication of public switched telephone network and IP network - Google Patents
System and method for implementing intercommunication of public switched telephone network and IP network Download PDFInfo
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Abstract
The invention discloses a method which realizes the intercommunication of a public switched telephone network and an IP network, and the method comprises the following steps: A, terminals of the public switched telephone network send out initial signaling messages 7 to gateways which are intercommunicated with the IP network; B, the gateways write IP parameters which contain the IP addresses of the gateways into the initial signaling messages 7, and send out the messages to called parties in the IP network. The invention also discloses a method which realizes the intercommunication of the public switched telephone network and the IP network, and the method comprises the following steps: C, call-initiating parties in the IP network send out expanded signaling messages 7 to gateways which are intercommunicated with the public switched telephone network; D, the gateways record the IP parameters of the call-initiating parties, and send out initial signaling messages 7 which do not containthe IP parameters to terminals in the public switched telephone network. The invention also discloses a system which realizes the intercommunication of the public switched telephone network and the IP network. Applying the invention, the intercommunication of the two networks can be realized without the translation and the packing of the signaling messages at the gateways which are positioned at the boundary of the IP network, thereby greatly reducing the complexity of the gateways and improving the whole performance of the IP network.
Description
Technical field
The present invention relates to communication technical field, concrete be particularly related to a kind of method and system of realizing public switched telephone network and IP network intercommunication.
Background technology
VoIP (networking telephone) technology is a kind of technology of uploading sending voice or video in ICP/IP protocol.It provides based on the cheap voice service of the expense of the Internet, and can further expand to IP-based voice service.VoIP adopts packetizing, the digital transmission technology of computer communication, earlier speech data being carried out compressed encoding handles, then data are pressed related protocol packings such as IP, packet is together in series after being transferred to reception ground by IP network more again, reverts to original voice signal through the decoding decompress(ion).
Existing VoIP adopts IP signaling agreement or own signaling protocol to carry out business control, when they and PSTN (public switched telephone network) carry out intercommunication, existing solution need be provided with the signaling translation gateway at both sides' network boundary, signaling to the inter-network transmission is translated, and transmits then.The structure of existing PSTN and IP network signalling interworking is as shown in Figure 1: public switched telephone network 110 and IP network 120 are carried out the transmission of voice and signaling by gateway, wherein signaling network gateway 130 is used to translate the signaling of transmitting between two kinds of networks, multimedia gateway 140 is used for changing between the voice data format of the voice data format of public switched telephone network and IP network, and multimedia network gateway controller 150 is used to connect SGW and multimedia gateway and coordinates two cooperations between the gateway.
In Fig. 1, when PSTN and IP network are carried out call in net, use the signaling in the net separately respectively.Wherein PSTN uses signalling system No.7 to call out control and management, and H.232 IP network is used, SIP or customized signaling are controlled.When two kinds of networks need inter-network to call out, just must carry out the conversion of call signaling at the gateway place.Fig. 2 shows PSTN and translates the flow chart that carries out intercommunication by signaling with the IP network of using the SIP signaling:
Step 201: the terminal 1 that is positioned at the PSTN net makes a call to terminal called 2 by the initial address message IAM that sends signalling system No.7.
Step 202: the INVITE of being translated into the SIP signaling in the border of IP network IAM message by SG/MGC11.
After step 203:INTITE message is transferred to the another side of IP network, is translated into IAM message by SG/MGC22 again and send to terminal 2.
Step 204: after terminal 2 receives IAM message, return the ACM idle message to terminal 1.
Step 205: the RINGING message of being translated into the SIP signaling in the border of IP network ACM message by SG/MGC22.
After step 206:RINGING message was transferred to the another side of IP network, the ACM message of being translated into Signaling System Number 7 by SG/MGC11 sent to terminal 1, and the expression terminal called is idle this moment.
Follow-up will the conversation with terminal 1 when terminal 2 is connected, and then can reply message and give terminal 1, when both sides finish to converse, connects if terminal 1 at first finishes conversation, then can send end to terminal 2.With the flow process shown in Fig. 2, terminal 1 and terminal 2 are being undertaken by message in the process of Signalling exchange, message based on Signaling System Number 7 all need convert the another side that the SIP signaling message is delivered to network to by gateway on one side of IP network, and then converts the SIP signaling message to Signaling System Number 7 message by gateway and send to terminal 2.The i.e. calling of two terminal rooms, reply, call out busy, on-hook etc. and all need after the boundary of two networks is through translation, become the signaling message that to discern separately and transmit.
When PSTN and IP network are carried out intercommunication by the mode of signaling parcel, one side at IP network, the Signaling System Number 7 message of terminal 1 is wrapped in the IP signaling message to be transmitted, when this IP signaling transmission of messages arrives the another side of IP network, give terminal 2 with the Signaling System Number 7 message taking-up of wrapping up in the IP signaling message and handle.
By above analysis as can be known, prior art has following shortcoming and defect:
At first,, need to resolve the signaling of PSTN, then parameter maps is sent in the corresponding field of IP network signaling by on gateway, carrying out the intercommunication that the signaling translation realizes PSTN and IP network.This conversion has increased the complexity of gateway, in case and the interpretative function of gateway make mistakes, then all translation all can make mistakes through the signaling of these gateways, finally caused the function bottleneck of network.And wrap up in the intercommunication that realizes PSTN and IP network by on gateway, carrying out signaling packet, two kinds of signaling machineries are superimposed, and can not merge, though save conversion, caused the repetition of signaling message to signaling, serious waste network bandwidth resources.
Secondly,,, have a large amount of message queueings in the network and wait processing, cause message congestion easily, reduced percept of call completed, cause the performance bottleneck of gateway along with the increase of number of users owing to the gateway amount between two networks is limited.
Summary of the invention
The purpose of this invention is to provide a kind of method that realizes public switched telephone network and IP network intercommunication, carry out the intercommunication of PSTN and IP network to overcome in the prior art by the mode of signaling translation or parcel, increased the complexity of gateway, waste network bandwidth resources, cause the problem of network function bottleneck easily.
Another object of the present invention provides a kind of system that realizes public switched telephone network and IP network intercommunication, two kinds of networks carry out intercommunication by the mode of signaling translation or signaling parcel in the prior art to overcome, increase the gateway complexity, caused the problem of network bottleneck easily.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of method that realizes public switched telephone network and IP network intercommunication comprises step:
Terminal in A, the public switched telephone network sends to gateway with the IP network intercommunication with initial Signaling System Number 7 message;
The IP parameter that B, described gateway will comprise self IP address writes in the described initial Signaling System Number 7 message, and sends the message to the callee in the IP network.
Described step B is specially:
B1, receive initial Signaling System Number 7 message with the gateway of IP network intercommunication, described initial Signaling System Number 7 message comprises corresponding domain, and/or the user-user parameter field;
The IP parameter that B2, described gateway will comprise self IP address writes in the user-user parameter field of described initial Signaling System Number 7 message and forms expansion Signaling System Number 7 message;
B3, described gateway send to callee in the IP network with described expansion Signaling System Number 7 message.
Corresponding domain comprises source sign, purpose sign and calls out nature parameters among the described step B1.
Callee in the described IP network is specially another gateway in the IP network, or the terminal in the IP network.
Described method also comprises:
Callee in the IP network replys and comprises this callee IP parameter expanding Signaling System Number 7 message to described gateway;
Described gateway writes down described callee's IP parameter, and replys the initial Signaling System Number 7 message do not comprise this IP parameter terminal in the public switched telephone network.
A kind of method that realizes public switched telephone network and IP network intercommunication comprises step:
Call initiator in C, the IP network will be expanded Signaling System Number 7 message and send to gateway with the public switched telephone network intercommunication;
D, described gateway write down the IP parameter of described call initiator, and send the initial Signaling System Number 7 message do not comprise this IP parameter terminal in the public switched telephone network.
Described step C is specially:
The IP parameter that call initiator in C1, the IP network will comprise self IP address writes in the user-user parameter field of initial Signaling System Number 7 message and forms expansion Signaling System Number 7 message;
C2, described call initiator send to gateway with the public switched telephone network intercommunication with described expansion Signaling System Number 7 message.
Described method also comprises:
Terminal in the public switched telephone network reply initial Signaling System Number 7 message to the gateway of IP network intercommunication;
Described gateway is replied and is comprised the call initiator of described IP parameter expanding Signaling System Number 7 message in the IP network.
A kind of system that realizes public switched telephone network and IP network intercommunication comprises the public switched telephone network terminal, with the gateway and the IP network terminal of IP network intercommunication,
Described public switched telephone network terminal comprises:
Terminal sends the initialization signaling unit, is used for initial Signaling System Number 7 message is sent to gateway with the IP network intercommunication;
Terminal receives the initialization signaling unit, is used to receive described initial Signaling System Number 7 message of replying with the gateway of IP network intercommunication;
Described and the gateway IP network intercommunication comprises:
Receive signaling unit, be used to receive the signaling message of described public switched telephone network terminal or the transmission of IP network terminal;
Write IP parameter unit, the user-user parameter field that the IP parameter that is used for comprising this gateway ip address writes described initial Signaling System Number 7 message forms expansion Signaling System Number 7 message;
Record IP parameter unit is used for IP reference record with described IP network terminal at described gateway;
Send signaling unit, be used for sending signaling message to described public switched telephone network terminal or IP network terminal;
Described IP network terminal comprises:
Terminal receives the expanded signalling unit, is used to receive the expansion Signaling System Number 7 message that described gateway sends;
Terminal is replied the expanded signalling unit, be used to reply comprise this terminal IP parameter expanding Signaling System Number 7 message to the gateway of IP network intercommunication.
Described reception signaling unit comprises:
Receive the initialization signaling unit, be used to receive the initial Signaling System Number 7 message that described public switched telephone network terminal sends;
Receive the expanded signalling unit, be used to receive the expansion Signaling System Number 7 message that described IP terminal is replied.
Described transmission signaling unit comprises:
Send the expanded signalling unit, be used for described expansion Signaling System Number 7 message is sent to the IP network terminal;
Reply the initialization signaling unit, be used to reply the initial Signaling System Number 7 message that does not comprise described IP parameter and arrive the public switched telephone network terminal.
A kind of system that realizes public switched telephone network and IP network intercommunication comprises the IP network terminal, with the gateway and the public switched telephone network terminal of public switched telephone network intercommunication,
Described IP network terminal comprises:
Terminal sends the expanded signalling unit, be used to send comprise this terminal IP parameter expanding Signaling System Number 7 message to the gateway of public switched telephone network intercommunication;
Terminal receives the expanded signalling unit, is used to receive the expansion Signaling System Number 7 message that described gateway is replied;
Described and the gateway public switched telephone network intercommunication comprises:
Receive signaling unit, be used to receive the signaling message of described public switched telephone network terminal or the transmission of IP network terminal;
Write IP parameter unit, the user-user parameter field that the IP parameter that is used for comprising this gateway ip address writes described initial Signaling System Number 7 message forms expansion Signaling System Number 7 message;
Record IP parameter unit is used for IP reference record with described IP network terminal at described gateway;
Send signaling unit, be used for sending signaling message to described public switched telephone network terminal or IP network terminal;
Described public switched telephone network terminal comprises:
Terminal is replied the initialization signaling unit, be used to reply initial Signaling System Number 7 message to the gateway of public switched telephone network intercommunication;
Terminal receives the initialization signaling unit, is used to receive described initial Signaling System Number 7 message of replying with the gateway of public switched telephone network intercommunication.
Described reception signaling unit comprises:
Receive the expanded signalling unit, be used to receive the expansion Signaling System Number 7 message that described IP terminal sends;
Receive the initialization signaling unit, be used to receive the initial Signaling System Number 7 message that described public switched telephone network terminal is replied.
Described transmission signaling unit comprises:
Send the initialization signaling unit, be used to send the initial Signaling System Number 7 message that does not comprise described IP parameter and arrive the public switched telephone network terminal;
Reply the expanded signalling unit, be used to reply described expansion Signaling System Number 7 message to described IP network terminal.
By above technical scheme provided by the invention as seen, the present invention has following characteristics and advantage:
At first, the present invention writes in the user-user parameter field of Signaling System Number 7 message by the IP address with network, make when PSTN and IP network are mutual, need not to carry out the translation or the parcel of signaling at the gateway place on IP network border, but directly will in IP network, transmit with the Signaling System Number 7 of IP parameter, this mode has greatly reduced the complexity of gateway, need not Signaling System Number 7 is translated or wrapped up, reduced because the signaling that the signaling translation causes is made mistakes, improved the function of IP network integral body.
Secondly,, make the gateway place be difficult for producing a large amount of pending signalings, improved the call completing rate of calling network, strengthened the performance of network owing to can directly transmit without the Signaling System Number 7 of translating or wrapping up between PSTN and the IP network.
Description of drawings
Fig. 1 is the structure chart of existing PSTN and IP network signalling interworking;
Fig. 2 is the flow chart that PSTN and IP network are carried out intercommunication by the signaling translation;
Fig. 3 is the method flow diagram of PSTN terminal for calling party of the present invention;
Fig. 4 is the preferred embodiment flow chart of PSTN terminal for calling party of the present invention;
Fig. 5 organizes the signaling message flow chart for the present invention;
Fig. 6 resolves the signaling message flow chart for the present invention;
Fig. 7 is the method flow diagram of IP network terminal for calling party of the present invention;
Fig. 8 is the preferred embodiment flow chart of IP network terminal for calling party of the present invention;
Fig. 9 is the preferred embodiment block diagram of system of the present invention;
Figure 10 is the preferred embodiment block diagram of the another system of the present invention.
Embodiment
Core of the present invention provides a kind of method that realizes public switched telephone network and IP network intercommunication, terminal in the public switched telephone network sends to gateway with the IP network intercommunication with initial Signaling System Number 7 message, the IP parameter that this gateway will comprise self IP address writes in the described initial Signaling System Number 7 message, and sends the message to the callee in the IP network; Or the call initiator in the IP network will be expanded Signaling System Number 7 message and send to gateway with the public switched telephone network intercommunication, this gateway metered call initiator's IP parameter, and send the initial Signaling System Number 7 message do not comprise this IP parameter terminal in the public switched telephone network.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Calling party of the present invention be the PSTN terminal method flow as shown in Figure 3:
Step 301: the terminal in the public switched telephone network sends initial Signaling System Number 7 message to gateway.
Signaling System Number 7 message comprises corresponding domain, and/or the user-user parameter field, wherein carries parameters such as calling number, called number, calling character in the corresponding domain.
Step 302: gateway writes self IP parameter in the initial Signaling System Number 7 message.
Receive initial Signaling System Number 7 message with the gateway of IP network intercommunication, and the IP parameter that will comprise self IP address writes in the user-user parameter field of initial Signaling System Number 7 message and forms expansion Signaling System Number 7 message.
The user-user parameter field of initial Signaling System Number 7 message is used to transmit the information between the user, and its form can be defined voluntarily by the user, and the length range of this parameter field is that 3 bytes are to 131 bytes.The length of parameter the regulation length range in the time, the user-user parameter field does not influence PSTN to be analyzed and handles other territory in the Signaling System Number 7 message.The present invention is caller in the IP network and called IP address, and other calls out parameters needed and be included in this user-user parameter field on IP network, and the length of parameter is in the scope of user-user parameter field regulation.Therefore, the expansion Signaling System Number 7 message that has comprised the IP address can directly be transmitted in PSTN and two kinds of networks of IP network, in the PSTN net, parameter in the user-user parameter field is not processed, only carry out transparent transmission, switch among the PSTN only need can be finished existing calling with the initial Signaling System Number 7 parameter of existing process analysis; In IP network, gateway can find the IP parameter of calling out the counterparty from the user-user parameter field of expansion Signaling System Number 7 message, need not to define in addition signaling format.
Step 303: gateway sends expansion Signaling System Number 7 message to the IP network terminal.
After callee in the IP network receives expansion Signaling System Number 7 message, answer comprise this callee IP parameter expanding Signaling System Number 7 message to the gateway of IP network intercommunication, this gateway record callee's IP parameter then, and reply the initial Signaling System Number 7 message that do not comprise the IP parameter terminal in the public switched telephone network.
Calling party of the present invention be the PSTN terminal the preferred embodiment flow process as shown in Figure 4, terminal 1 is positioned at PSTN among this embodiment, terminal 2 is positioned at IP network:
Step 401: the terminal 1 that is positioned at PSTN sends initial IAM message to SG/MGC.
Wherein initial IAM is the initial address message of Signaling System Number 7, and the terminal 1 that is positioned at PSTN sends to SG/MGC (SGW/multi-media network controller) with the IP network intercommunication with initial IAM message.
Step 402:SG/MGC writes the IP parameter that comprises current gateway IP address in the initial IAM message that receives.
The IP parameter that SG/MGC will comprise current gateway IP address writes in the user-user parameter field of initial IAM message, and the IAM message after this expansion can not changed signaling format and just can transmit on IP network.
Step 403:SG/MGC will comprise IP parameter expanding IAM message and send to the terminal 2 that is positioned at IP network.
Step 404: after terminal 2 received and comprises IP parameter expanding IAM message, the IP parameter that will comprise the IP address write in the initial ACM message of answer.
Terminal 2 in the step 405:IP net will comprise IP parameter expanding ACM message and send on the SG/MGC.
The initial ACM message that step 406:SG/MGC will not comprise the IP parameter sends to the terminal 1 that is arranged in PSTN.
Concrete, the flow process of organizing signaling message in the step 402 as shown in Figure 5:
Step 501: IP network parameters such as IP address and IP address character are write in the user-user parameter field of initial Signaling System Number 7 message.The form of IP network parameter field is as shown in table 1 below:
| Parameter type: IAM, ACM, ANM etc. |
| Purpose IP address: |
| Source IP address: |
| Purpose ID: |
| Source ID: |
| The network mark of coming in and going out is remembered: (from outer net, or to outer net) |
| Calling parameter: |
Step 502: organize calling number, called number, speech channel number and call out command parameter such as character.
Step 503: for parameter adds command header.
Step 504: for message adds OPC (purpose signalling coding) and DPC (source signalling coding).
When terminal 1 is set up when calling out by IAM message, and do not know the IP address of called IP terminal, so need not to insert purpose IP address in the table 1, only will insert the source IP address territory and get final product with the IP address of the gateway of IP network intercommunication.
Concrete, the IAM message of 2 pairs of receptions of terminal is resolved to obtain signaling parameter in the step 404, the flow process of resolving signaling message as shown in Figure 6:
Step 601: extract OPC and DPC in the signaling message.
OPC and DPC are used for the described calling of verification signaling message, when DPC is not this signalling point, and can according to its described calling or called number positions and with the message forward pass.
Step 602: the particular type of judging signaling.
Judge that signaling makes a call, responding call, answer or on-hook, when signaling is the initial message IAM message of call, set up the data of call according to the parameter of IAM message, as the described calling of subsequent message.
Step 603: extract calling number, called number, speech channel number and call out signaling parameter such as character.
Step 604: extract the parameter of IP networks such as IP address and IP address character, in order to send data to IP network according to the IP address.
Calling party of the present invention be the IP network terminal method flow as shown in Figure 7:
In the step 701:IP net call initiator send expansion Signaling System Number 7 message to the gateway of PSTN net interconnecting.
The IP parameter that call initiator in the IP network will comprise self IP address writes in the user-user parameter field of initial Signaling System Number 7 message and forms expansion Signaling System Number 7 message, and will expand Signaling System Number 7 message and send to gateway with the PSTN net interconnecting.
Step 702: the IP parameter of call initiator in this gateway record IP network.
After receiving the expansion Signaling System Number 7 message that call initiator sends in the IP network with the gateway of PSTN net interconnecting, the IP reference record of the call initiator in this message user-customer parameter territory is got off, so that reply expansion Signaling System Number 7 message according to the IP parameter of this record to call initiator next time.
Step 703: this gateway sends initial Signaling System Number 7 message to the public switched telephone network terminal.
After terminal in the public switched telephone network receives the initial Signaling System Number 7 message of gateway transmission, reply initial Signaling System Number 7 message to the gateway of IP network intercommunication, this gateway IP parameter that will comprise its IP address writes in the initial Signaling System Number 7 message of answer and forms expansion Signaling System Number 7 message then, and sends the message to the call initiator in the IP network.
Calling party of the present invention be the IP network terminal the preferred embodiment flow process as shown in Figure 8, terminal 11 is positioned at IP network among this embodiment, terminal 22 is positioned at PSTN:
Step 801: the terminal 11 that is positioned at IP network sends expansion REL message to SG/MGC.
Wherein Initial R EL message is the terminated call message of Signaling System Number 7, the terminal 11 that is arranged in IP network writes the IP parameter formation expansion REL message that comprises this IP address of terminal at the user-user parameter field of Initial R EL message, and sends this expansion REL message to SG/MGC.
Step 802:SG/MGC recorder to the user-user parameter field of expansion REL message in the IP parameter of terminal 11.
The Initial R EL message that step 803:SG/MGC will not comprise the IP parameter of terminal 11 sends to the terminal 22 of public switched telephone network.
Step 804: after terminal 22 receives Initial R EL message, reply Initial R LC message to SG/MGC.
Step 805:SG/MGC writes the IP parameter that comprises current gateway IP address in the Initial R LC message that receives.
The IP parameter that SG/MGC will comprise current gateway IP address writes in the user-user parameter field of Initial R LC message, and the RLC message after this expansion can not changed signaling format and just can transmit on IP network.
Step 806:SG/MGC will comprise IP parameter expanding RLC message and send to the terminal 11 that is positioned at IP network.
The preferred embodiment block diagram of system of the present invention is as shown in Figure 9:
This system comprises: public switched telephone network terminal 910, IP network terminal 930 be used to be connected two terminals and the gateway 920 IP network intercommunication.
Public switched telephone network terminal 910 comprises that terminal sends initialization signaling unit 911, is used for initial Signaling System Number 7 message is sent to gateway with the IP network intercommunication; Terminal receives initialization signaling unit 912, is used to receive the initial Signaling System Number 7 message of replying with the gateway of IP network intercommunication.
Comprise reception signaling unit 921 with the gateway 920 of IP network intercommunication, be used to receive the signaling message of public switched telephone network terminal or the transmission of IP network terminal; Write IP parameter unit 924, the user-user parameter field that the IP parameter that is used for comprising this gateway ip address writes initial Signaling System Number 7 message forms expansion Signaling System Number 7 message; Send signaling unit 925, be used for sending signaling message to public switched telephone network terminal or IP network terminal; Record IP parameter unit 928 is used for IP reference record with the IP network terminal at gateway.
Wherein, receive signaling unit 921 and comprise reception initialization signaling unit 922, be used to receive the initial Signaling System Number 7 message that the public switched telephone network terminal sends; Receive expanded signalling unit 923, be used to receive the expansion Signaling System Number 7 message that the IP terminal is replied.Send signaling unit 925 and comprise answer initialization signaling unit 926, be used to reply the initial Signaling System Number 7 message that does not comprise the IP parameter and arrive the public switched telephone network terminal; Send expanded signalling unit 927, be used for expansion Signaling System Number 7 message is sent to the IP network terminal.
The preferred embodiment block diagram of another system of the present invention is as shown in figure 10:
This system comprises: public switched telephone network terminal 1010, IP network terminal 1030 be used to be connected two terminals and the gateway 1020 public switched telephone network intercommunication.
Public switched telephone network terminal 1010 comprises that terminal replys initialization signaling unit 1011, be used to reply initial Signaling System Number 7 message to the gateway of public switched telephone network intercommunication; Terminal receives initialization signaling unit 1012, is used to receive the initial Signaling System Number 7 message of replying with the gateway of public switched telephone network intercommunication.
Comprise reception signaling unit 1021 with the gateway 1020 of public switched telephone network intercommunication, be used to receive the signaling message of public switched telephone network terminal or the transmission of IP network terminal; Write IP parameter unit 1024, the user-user parameter field that the IP parameter that is used for comprising this gateway ip address writes initial Signaling System Number 7 message forms expansion Signaling System Number 7 message; Send signaling unit 1025, be used for sending signaling message to public switched telephone network terminal or IP network terminal; Record IP parameter unit 1028 is used for IP reference record with the IP network terminal at gateway.
Wherein, receive signaling unit 1021 and comprise reception initialization signaling unit 1022, be used to receive the initial Signaling System Number 7 message that the public switched telephone network terminal is replied; Receive expanded signalling unit 1023, be used to receive the expansion Signaling System Number 7 message that the IP terminal sends.Send signaling unit 1025 and comprise transmission initialization signaling unit 1026, be used to send the initial Signaling System Number 7 message that does not comprise the IP parameter and arrive the public switched telephone network terminal; Reply expanded signalling unit 1027, be used for replying expansion Signaling System Number 7 message to described IP network terminal.
By above embodiment as can be known, signaling message such as initial IAM no longer is translated or wraps up in IP network, only need at the gateway place that enters with the IP network intercommunication, the IP address of this gateway is write in the user-user parameter field of initial Signaling System Number 7, can on IP network, transmit after the formation expansion Signaling System Number 7 message.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (12)
1. a method that realizes public switched telephone network and IP network intercommunication is characterized in that, comprises step:
Terminal in A, the public switched telephone network sends to gateway with the IP network intercommunication with initial Signaling System Number 7 message;
The IP parameter that B, described gateway will comprise self IP address writes in the described initial Signaling System Number 7 message, and sends the message to the callee in the IP network, wherein,
Described step B is specially:
B1, receive initial Signaling System Number 7 message with the gateway of IP network intercommunication, described initial Signaling System Number 7 message comprises corresponding domain and user-user parameter field;
The IP parameter that B2, described gateway will comprise self IP address writes in the user-user parameter field of described initial Signaling System Number 7 message and forms expansion Signaling System Number 7 message;
B3, described gateway send to callee in the IP network with described expansion Signaling System Number 7 message.
2. method according to claim 1 is characterized in that, corresponding domain comprises source sign, purpose sign and calls out nature parameters among the described step B1.
3. method according to claim 1 is characterized in that, the callee in the described IP network is specially another gateway in the IP network, or the terminal in the IP network.
4. method according to claim 1 is characterized in that, described method also comprises:
Callee in the IP network replys and comprises this callee IP parameter expanding Signaling System Number 7 message to described gateway;
Described gateway writes down described callee's IP parameter, and replys the initial Signaling System Number 7 message do not comprise this IP parameter terminal in the public switched telephone network.
5. a method that realizes public switched telephone network and IP network intercommunication is characterized in that, comprises step:
Call initiator in C, the IP network will be expanded Signaling System Number 7 message and send to gateway with the public switched telephone network intercommunication;
D, described gateway write down the IP parameter of described call initiator, and send the initial Signaling System Number 7 message do not comprise this IP parameter terminal in the public switched telephone network; Wherein,
Described step C is specially:
The IP parameter that call initiator in C1, the IP network will comprise self IP address writes in the user-user parameter field of initial Signaling System Number 7 message and forms expansion Signaling System Number 7 message;
C2, described call initiator send to gateway with the public switched telephone network intercommunication with described expansion Signaling System Number 7 message.
6. method according to claim 5 is characterized in that, described method also comprises:
Terminal in the public switched telephone network reply initial Signaling System Number 7 message to the gateway of IP network intercommunication;
Described gateway is replied and is comprised the call initiator of described IP parameter expanding Signaling System Number 7 message in the IP network.
7. a system that realizes public switched telephone network and IP network intercommunication comprises the public switched telephone network terminal, and gateway and IP network terminal with the IP network intercommunication is characterized in that,
Described public switched telephone network terminal comprises:
Terminal sends the initialization signaling unit, is used for initial Signaling System Number 7 message is sent to gateway with the IP network intercommunication;
Terminal receives the initialization signaling unit, is used to receive described initial Signaling System Number 7 message of replying with the gateway of IP network intercommunication;
Described and the gateway IP network intercommunication comprises:
Receive signaling unit, be used to receive the signaling message of described public switched telephone network terminal or the transmission of IP network terminal;
Write IP parameter unit, the user-user parameter field that the IP parameter that is used for comprising this gateway ip address writes described initial Signaling System Number 7 message forms expansion Signaling System Number 7 message;
Record IP parameter unit is used for IP reference record with described IP network terminal at described gateway;
Send signaling unit, be used for sending signaling message to described public switched telephone network terminal or IP network terminal;
Described IP network terminal comprises:
Terminal receives the expanded signalling unit, is used to receive the expansion Signaling System Number 7 message that described gateway sends;
Terminal is replied the expanded signalling unit, be used to reply comprise this terminal IP parameter expanding Signaling System Number 7 message to the gateway of IP network intercommunication.
8. system according to claim 7 is characterized in that, described reception signaling unit comprises:
Receive the initialization signaling unit, be used to receive the initial Signaling System Number 7 message that described public switched telephone network terminal sends;
Receive the expanded signalling unit, be used to receive the expansion Signaling System Number 7 message that described IP terminal is replied.
9. system according to claim 7 is characterized in that, described transmission signaling unit comprises:
Send the expanded signalling unit, be used for described expansion Signaling System Number 7 message is sent to the IP network terminal;
Reply the initialization signaling unit, be used to reply the initial Signaling System Number 7 message that does not comprise described IP parameter and arrive the public switched telephone network terminal.
10. a system that realizes public switched telephone network and IP network intercommunication comprises the IP network terminal, and gateway and public switched telephone network terminal with the public switched telephone network intercommunication is characterized in that,
Described IP network terminal comprises:
Terminal sends the expanded signalling unit, be used to send comprise this terminal IP parameter expanding Signaling System Number 7 message to the gateway of public switched telephone network intercommunication;
Terminal receives the expanded signalling unit, is used to receive the expansion Signaling System Number 7 message that described gateway is replied;
Described and the gateway public switched telephone network intercommunication comprises:
Receive signaling unit, be used to receive the signaling message of described public switched telephone network terminal or the transmission of IP network terminal;
Write IP parameter unit, the user-user parameter field that the IP parameter that is used for comprising this gateway ip address writes described initial Signaling System Number 7 message forms expansion Signaling System Number 7 message;
Record IP parameter unit is used for IP reference record with described IP network terminal at described gateway;
Send signaling unit, be used for sending signaling message to described public switched telephone network terminal or IP network terminal;
Described public switched telephone network terminal comprises:
Terminal is replied the initialization signaling unit, be used to reply initial Signaling System Number 7 message to the gateway of public switched telephone network intercommunication;
Terminal receives the initialization signaling unit, is used to receive described initial Signaling System Number 7 message of replying with the gateway of public switched telephone network intercommunication.
11. system according to claim 10 is characterized in that, described reception signaling unit comprises:
Receive the expanded signalling unit, be used to receive the expansion Signaling System Number 7 message that described IP terminal sends;
Receive the initialization signaling unit, be used to receive the initial Signaling System Number 7 message that described public switched telephone network terminal is replied.
12. system according to claim 10 is characterized in that, described transmission signaling unit comprises:
Send the initialization signaling unit, be used to send the initial Signaling System Number 7 message that does not comprise described IP parameter and arrive the public switched telephone network terminal;
Reply the expanded signalling unit, be used to reply described expansion Signaling System Number 7 message to described IP network terminal.
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| CN2006101678614A CN101207547B (en) | 2006-12-20 | 2006-12-20 | System and method for implementing intercommunication of public switched telephone network and IP network |
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| CN101207547B true CN101207547B (en) | 2011-05-25 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030016806A1 (en) * | 2001-07-18 | 2003-01-23 | Emerson Harry E. | Integrated telephone central office systems for integrating the internet with the public switched telephone network |
| CN1469605A (en) * | 2002-06-17 | 2004-01-21 | Lg电子株式会社 | Routing system in next generation open network and method for controlling the same route system |
| CN1501650A (en) * | 2002-11-14 | 2004-06-02 | 华为技术有限公司 | A call flow setting up method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030016806A1 (en) * | 2001-07-18 | 2003-01-23 | Emerson Harry E. | Integrated telephone central office systems for integrating the internet with the public switched telephone network |
| CN1469605A (en) * | 2002-06-17 | 2004-01-21 | Lg电子株式会社 | Routing system in next generation open network and method for controlling the same route system |
| CN1501650A (en) * | 2002-11-14 | 2004-06-02 | 华为技术有限公司 | A call flow setting up method |
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