CN104168190B - A kind of method and device for calling routing - Google Patents

Abstract

The embodiments of the invention provide a kind of method and device for calling routing, it is related to communication technical field, to carry out traffic carrying using IMS network, solves the problem of upgrading and the energy-saving and emission-reduction of network are unfavorable for by the way of PSTN long distance network traffic offereds.This method includes：The call request that calling subscribe sends is received by the call treatment network element of non-IMS network, the area code of ownership place where obtaining rear subscriber number, whether whether ownership place where determining rear subscriber number configures the first IMS network, and support to enter IMS network nearby, just far go out the routing mode of IMS network；If ownership place where rear subscriber number is configured with the first IMS network, and supports the routing mode, then the call request is routed to the call treatment network element of the first IMS network, to cause the call treatment network element of the first IMS network to route the call request.

Description

A kind of method and device for calling routing

Technical field

The present invention relates to communication technical field, more particularly to a kind of method and device for calling routing.

Background technology

IP multimedia subsystem (IP Multimedia Subsystem, abbreviation IMS) network is by third generation affiliate A kind of IP-based network rack that plan (The 3rd Generation Partnership Project, abbreviation 3GPP) is defined Structure, its central characteristics be using session initiation protocol (Session Initiation Protocol, abbreviation SIP) and with access The independence of technology, i.e. IMS network can pass through MGCF (Media Gateway Control Function, abbreviation MGCF) network element realize with traditional circuit switching (Circuit Switched, abbreviation CS) network, it is such as public The intercommunication of switched telephone network (Public Switched Telephone Network, abbreviation PSTN) or mobile network etc. altogether.

In the prior art, the CS network user carries out the process of audio call to IMS network user, as shown in Figure 1.Assuming that main The PSTN network user for Shanghai is, is called as Pekinese IMS network user, then Calling Side PSTN user is initiated after calling, should Calling can first be routed to the PSTN end office (EO)s of Calling Side, and the PSTN tandem exchanges of Calling Side receive the calling and are routed to PSTN Toll switch, then routes the call to the I-CSCF network elements of callee side by the MGCF network elements of callee side IMS network, callee side I-CSCF network elements are retrieved as the S-CSCF that the user provides service by inquiring about the ENUM/DNS servers in the affiliated province of callee side Network element, then routes to called subscriber by the SBC network elements of callee side, completes whole calling procedure.

When PSTN network user and IMS network user carry out intercommunication, the call request that calling subscribe sends passes through PSTN Long distance network is routed to IMS network from PSTN network, and the traffic is carried using PSTN long distance networks, i.e., using just " just far enter IMS nets The routing mode of network "；It is also to use when carrying out intercommunication simultaneously for traditional PSTN network user and PSTN network user PSTN long distance networks carry out traffic carrying, and PSTN long distance networks are mainly using time division multiplexing (Time Division at present Multiplexing, abbreviation TDM) equipment, the equipment it is long in the net time, and equipment power consumption is high, floor space is big, fault rate Height, therefore, is unfavorable for upgrading and the energy-saving and emission-reduction of network by the way of PSTN long distance network traffic offereds.

The content of the invention

Embodiments of the invention provide a kind of method and device for calling routing, to carry out traffic carrying, solution using IMS network Certainly it is unfavorable for upgrading and the energy-saving and emission-reduction of network by the way of PSTN long distance network traffic offereds.

To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：

In a first aspect, the embodiments of the invention provide a kind of call route method, including：

The call treatment network element of non-IMS network receives the call request that calling subscribe sends, and the call request includes Rear subscriber number；

The area code of ownership place where obtaining the rear subscriber number；

According to the area code of ownership place where the rear subscriber number, determine that rear subscriber number place ownership place is The first IMS network of no configuration, and whether first IMS network support to enter IMS network nearby, just far go out the route of IMS network Mode；

If ownership place where the rear subscriber number configures first IMS network, and first IMS network is supported The routing mode, then route to the call request call treatment network element of first IMS network, to cause described The call treatment network element of one IMS network is route to the call request.

Second aspect, the embodiments of the invention provide a kind of call route method, including：

The call treatment network element of first IMS network receives the call request that the call treatment network element of non-IMS network is sent, institute Stating call request includes called number；

The area code of ownership place where obtaining the called number；

According to the area code of ownership place where the called number, determine that called number place ownership place is It is no configuration the second IMS network and second IMS network whether support to enter IMS network nearby, just far go out the route side of IMS network Formula；

If ownership place where the called number configures second IMS network and second IMS network is supported The routing mode, then obtain the IP address of the call treatment network element of second IMS network；

According to the IP address of the call treatment network element of second IMS network, the call request is routed to described The call treatment network element of two IMS networks, so that the call treatment network element of second IMS network enters walking along the street to the call request By.

The third aspect, the embodiments of the invention provide a kind of call route method, including：

The call treatment network element of second IMS network receives the call request that the call treatment network element of the first IMS network is sent, The call request includes called number；

E.164 Number server of first inquiry request to second IMS network is sent, to cause second IMS network E.164 Number server inquires about the SIP URI for whether including the called number according to first inquiry request, and will inquiry As a result it is sent in the call treatment network element of second IMS network, first inquiry request and includes the called subscriber number Code；

Receive the Query Result that the E.164 Number server of second IMS network is sent；

If including the SIP URI of the called number in the Query Result, the second inquiry request is sent to institute State the home subscriber server HSS of the second IMS network；The described of HSS servers transmission for receiving second IMS network is called The corresponding service call conversation control function net element information of Subscriber Number；The call request is routed into the called subscriber number The corresponding service call conversation control function network element of code, so that the service call conversation control function is by the call request road By the extremely called subscriber；

If not including the SIP URI of the called number in the Query Result, according to the called subscriber number Code, the called subscriber is routed to by the call request by the MGCF network element of second IMS network.

Fourth aspect, the embodiments of the invention provide a kind of call routing device, including：

Receiving unit, the call request for receiving calling subscribe's transmission, the call request includes calling subscribe number Code；

Acquiring unit, the area code of ownership place where for obtaining the rear subscriber number；

Determining unit, for the area code of the ownership place according to where the rear subscriber number, determines the calling subscribe number Whether ownership place where code configures the first IMS network, and whether first IMS network is supported to enter IMS network nearby, just far gone out The routing mode of IMS network；The determining unit is additionally operable to the area code of the ownership place according to where the called number, it is determined that Whether ownership place where the called number configures the second IMS network, and whether second IMS network supports the road By mode；

Routing unit, if configure first IMS network for ownership place where the rear subscriber number, and described the One IMS network supports the routing mode, then the call request is routed to the call treatment net of first IMS network Member, to cause the call treatment network element of first IMS network to route the call request.

5th aspect, the embodiments of the invention provide a kind of call routing device, including：

Receiving unit, for receiving the call request that the call treatment network element of non-IMS network is sent, in the call request Including called number；

Acquiring unit, the area code of ownership place where for obtaining the called number；

Determining unit, for the area code of the ownership place according to where the called number, determines the called subscriber number Ownership place where code whether configures the second IMS network and whether second IMS network is supported to enter IMS network nearby, just far gone out The routing mode of IMS network；

The acquiring unit, if be additionally operable to ownership place where the called number configure second IMS network and Second IMS network supports the routing mode, then obtains the IP address of the call treatment network element of second IMS network；

Routing unit, for the IP address of the call treatment network element according to second IMS network, by the call request The call treatment network element of second IMS network is routed to, so that the call treatment network element of second IMS network is exhaled described Request is made to be route.

6th aspect, the embodiments of the invention provide a kind of call routing device, including：

Receiving unit, for receiving the call request that the call treatment network element of the first IMS network is sent, the call request Include called number；

Transmitting element, it is described to cause for sending E.164 Number server of first inquiry request to second IMS network The E.164 Number server of second IMS network inquires about the SIP for whether including the called number according to first inquiry request URI, and Query Result is sent in the call treatment network element of second IMS network, first inquiry request and includes institute State called number；

The receiving unit, is additionally operable to receive the Query Result that the E.164 Number server of second IMS network is sent；

Routing unit, if for the SIP URI comprising the called number, the acquisition in the Query Result Unit sends home subscriber server HSS of second inquiry request to second IMS network；The receiving unit receives described The corresponding service call conversation control function network element letter of the called number that the HSS servers of second IMS network are sent Breath；The call request is routed into the corresponding service call conversation control function network element of the called number, with toilet State service call conversation control function and the call request is routed into the called subscriber；

The routing unit, if being additionally operable to not include in the Query Result SIP URI of the called number, According to the called number, by MGCF network element of the call request by second IMS network Route to the called subscriber.

A kind of method and device for calling routing provided in an embodiment of the present invention, passes through the call treatment network element of non-IMS network The call request that calling subscribe sends is received, the area code of ownership place where rear subscriber number is obtained, determines rear subscriber number Whether whether place ownership place configures the first IMS network, and support to enter IMS network nearby, just far go out the route side of IMS network Formula；If ownership place where rear subscriber number is configured with the first IMS network, and supports the routing mode, then please by the calling The call treatment network element for routing to the first IMS network is sought, to cause the call treatment network element of the first IMS network to the call request It is route.So, be configured with IMS network and support enter nearby IMS network, just far go out IMS network routing mode area Domain, it is possible to which toll traffic is first routed to local IMS network, bar is provided for follow-up toll traffic via IMS network carrying Part, can select optimal routing mode according to the deployment scenario of actual IMS network.In addition, toll traffic is held by IMS network Carry, can be route to greatest extent using the IP of IMS network, shunt the traffic of PSTN long distance networks, be conducive to energy-saving and emission-reduction, together When, IMS network is progressively replaced equipment power consumption height, the PSTN network that floor space is big, fault rate is high, realize PSTN Network to IMS network is seamlessly transitted.

Brief description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings Obtain other accompanying drawings.

Fig. 1 is the specific routing procedure schematic diagram of the PSTN network user call IMS network user in the prior art；

Fig. 2 is the embodiments of the invention provide a kind of flow chart of call route method；

Fig. 3 is the embodiments of the invention provide the flow chart of another call route method；

Fig. 4 is the flow chart of another call route method provided in an embodiment of the present invention；

Fig. 5 is a kind of specific routing procedure of the PSTN network user call IMS network user provided in an embodiment of the present invention Schematic diagram；

Fig. 6 calls the specific routing procedure of PSTN network user for a kind of PSTN network user provided in an embodiment of the present invention Schematic diagram；

Fig. 7 is a kind of schematic diagram that charging and traffic measurement are carried out to call business provided in an embodiment of the present invention；

Fig. 8 is a kind of schematic diagram of call routing device provided in an embodiment of the present invention；

Fig. 9 is the schematic diagram of another call routing device provided in an embodiment of the present invention；

Figure 10 is the schematic diagram of another call routing device provided in an embodiment of the present invention；

Figure 11 is the schematic diagram of another call routing device provided in an embodiment of the present invention；

Figure 12 is the schematic diagram of another call routing device provided in an embodiment of the present invention；

Figure 13 is the schematic diagram of another call routing device provided in an embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

, it is necessary to which the network element in the IMS network used is more during call is completed, including session Edge position control Device (Session Border Controller, abbreviation SBC) network element, CSCF (Call Session Control Function, abbreviation CSCF) network element, MGCF (Media Gateway Control Function, abbreviation MGCF) network element, electronic number to uniform resource identifier (Uniform Resource Identifier, letter Claim URI) mapping (Electronic Numbers to URI Mapping, abbreviation ENUM) server/domain name resolution server (Domain Name Server, abbreviation DNS), home subscriber server (Home Subscription Server, abbreviation HSS) It is common to participate in realizing.

Wherein, SBC network elements are usually located between access network and IMS network, enter IMS core net as the agency of user, CSCF network elements are the core network elements of whole IMS network, the main signaling control being responsible for during processing multimedia call session, root According to the difference of CSCF Network Element Functions, CSCF network elements particularly may be divided into proxy CSCF (Proxy-CSCF, abbreviation P-CSCF) network element, look into Ask CSCF (Interrogating-CSCF, abbreviation I-CSCF) network elements and serving CSCF (Serving-CSCF, abbreviation S-CSCF) Network element, MGCF network elements are mainly responsible for IMS network and the intercommunication of CS networks, and HSS servers are used to store the information related to user, ENUM/DNS servers define the method being placed on E.164 number translated for domain name form in the database of dns server, often The individual domain name being transformed by E.164 number can correspond to a series of session initiation protocol universal resource identifier (Session Initiation Protocol Uniform Resource Identifier, abbreviation SIP URI) so that international uniform E.164 telephone number turns into the network address resources that can be used in internet.In the prior art, IMS network is according to province Configured, therefore, in the province of configuration IMS network, the ENUM/DNS servers configuration in the IMS network in each province is originally The IMS user data of province and he save the route that area code saves ENUM/DNS servers to him.

Embodiment one

The call route method described in the embodiment of the present invention realization, it is necessary to first to existing ENUM/DNS servers Setting modify, i.e., on the basis of original traditional data region, the H codes of the number that adds your mobile phone, phone number are returned The area code of the corresponding relation and fixed telephone number of possession area code and the home network domain name of phone number and landline telephone number The data area of the corresponding relation of the home network domain name of code.Example, for the fixed telephone subscriber in Shanghai, except in IMS Set in the ENUM/DNS servers of network outside the IMS network user data in Shanghai, there is provision of him and save area code and ownership The corresponding relation of domain names, for example, set Pekinese's area code 010 to Pekinese home network domain name beijing.ims.cn's Corresponding relation, the area code 0532 in Qingdao or the area code 0531 in Jinan are to the home network domain name shandong.ims.cn's in Shandong Corresponding relation.For the mobile subscriber in Shanghai, the IMS except setting Shanghai in the ENUM/DNS servers of IMS network Outside network user data, mobile phone H codes, the number attribution area code pass corresponding with home network domain name of his province there is provision of System, for example, set mobile phone H codes, the number attribution area code 010 and the Pekinese's home network domain name of Beijing user Beijing.ims.cn corresponding relation is, it is necessary to which explanation, following call routing processes are illustrated as premise 's.

As shown in Fig. 2 being a kind of flow chart of call route method provided in an embodiment of the present invention, the call route method Including：

Step 401, the call treatment network element of non-IMS network receive the call request that calling subscribe sends, and the calling please The number of calling subscribe is included in asking.

Wherein, calling subscribe is non-IMS network user, if calling subscribe is fixed telephone subscriber, and non-IMS network is exhaled Cry the PSTN tandem exchanges that processing net element is caller user side, if calling subscribe is mobile phone user, the calling of non-IMS network The gateway exchange of the mobile network of processing net element scope calling subscribe side.Specifically, by the PSTN tandem exchanges of calling subscribe side or shifting Dynamic network gateway exchange receives the call request that calling subscribe sends.

Step 402, the area code for obtaining rear subscriber number place ownership place.

Telephone number (landline telephone or mobile phone) is carried out specifically, the call treatment network element of non-IMS network has The function of analysis, can be according to the area code of ownership place where existing Rule rear subscriber number.Wherein, for fixed number or The mobile number (phone number) of area code is carried, ownership place where the landline telephone can be directly obtained from the fixed number Area code, the area code of ownership place where the mobile number of the carrying area code is directly obtained from the mobile number of the carrying area code；It is right In the mobile phone for not carrying area code, due to each mobile number H codes it is unique, and the H codes of each mobile number and this Ownership place where mobile number is corresponding, therefore, by analyzing the H codes of the mobile phone, obtains mobile phone place The area code of ownership place.Example, moved for Pekinese or fixed user, its ownership place area code is Beijing area code 010.

Step 403, the area code according to ownership place where the rear subscriber number, determine the rear subscriber number place Whether ownership place configures the first IMS network, and whether first IMS network is supported to enter IMS network nearby, just far goes out IMS nets The routing mode of network.

Specifically, the first IMS network whether is configured, and it is relevant with actual IMS network deployment, generally, dispose IMS Network is predetermined according to different provinces and cities.Example, IMS network user whether is supported for Calling Side, can be with Determined as the PSTN network tandem exchange belonging to calling subscribe's ownership place or mobile network's gateway exchange.

If ownership place where step 404, the rear subscriber number configures first IMS network, and the first IMS Routing mode described in network support, then route to the call request call treatment network element of first IMS network, so that The call treatment network element for obtaining first IMS network is route to the call request.

Specifically, be configured without the first IMS network for ownership place where rear subscriber number, then routing mode with it is existing The routing mode of technology is identical, by the call routing to PSTN network, to cause the PSTN network to carry out the calling Route, will not be repeated here.

Further, the call route method also includes：

Step 405, the area code for obtaining called number place ownership place.

Wherein, called number is also contained in the call request.

Step 406, the area code according to ownership place where the called number, determine the called number place Whether ownership place configures the second IMS network, and whether second IMS network supports the routing mode.

Specifically, for the user that Calling Side is PSTN network, by the PSTN network tandem of ownership place where calling number Office is judged；For the user that Calling Side is mobile network, judged by the gateway exchange of ownership place where calling number.Converge Connect whether callee side is configured the second IMS network by office or gateway exchange, and whether support the judged result of the routing mode to add Add in call request, and be sent to the call treatment network element of the first IMS network.

Step 407, it will determine that result is added in the call request, and is sent to the calling of first IMS network Processing net element；In the determination result the second IMS network, and institute whether are configured comprising ownership place where the called number State the mark whether the second IMS network supports the routing mode.

In summary, the call treatment network element of non-IMS network can by the area code of ownership place where rear subscriber number, Judge whether Calling Side configures IMS network, and whether the IMS network of Calling Side is supported to be put into IMS network, just far goes out IMS nets The routing mode of network, further, by the area code of ownership place where called number, judges whether callee side also configures IMS network, and also whether support is put into IMS network, just far goes out the routing mode of IMS network the IMS network of callee side.Work as master Side and callee side is made to configure IMS network, and the IMS network of configuration is supported be put into IMS network, just far go out the road of IMS network By mode, then traffic carrying can be carried out by IMS network, be route to greatest extent using the IP of IMS network, shunt PSTN length The traffic of way net.

A kind of call route method provided in an embodiment of the present invention, is received by the call treatment network element of non-IMS network and led The call request for making user send, the area code of ownership place where obtaining rear subscriber number determines to return where rear subscriber number Whether whether possession configures the first IMS network, and support to enter IMS network nearby, just far go out the routing mode of IMS network；If Ownership place where rear subscriber number is configured with the first IMS network, and supports the routing mode, then route the call request To the call treatment network element of the first IMS network, to cause the call treatment network element of the first IMS network to enter walking along the street to the call request By.So, be configured with IMS network and support enter nearby IMS network, just far go out IMS network routing mode region, so that it may So that toll traffic first to be routed to local IMS network, condition is provided via IMS network carrying for follow-up toll traffic, can be with According to the deployment scenario of actual IMS network, optimal routing mode is selected., can be with addition, toll traffic is carried by IMS network It is route to greatest extent using the IP of IMS network, shunts the traffic of PSTN long distance networks, be conducive to energy-saving and emission-reduction, meanwhile, also make IMS network can progressively be replaced equipment power consumption height, the PSTN network that floor space is big, fault rate is high, realize that PSTN network is arrived IMS network is seamlessly transitted.

Embodiment two

As shown in figure 3, being a kind of flow chart of call route method provided in an embodiment of the present invention, the call route method Including：

What the call treatment network element that step 501, the call treatment network element of the first IMS network receive non-IMS network was sent exhales Request is cried, the number of called subscriber is included in the call request.

Wherein, the call treatment network element of the first IMS network described in the embodiment of the present invention can be the I- of caller user side CSCF network elements, specifically, the calling that the call treatment network element that the I-CSCF network elements of calling subscribe side receive non-IMS network is sent please Ask

Step 502, the area code for obtaining called number place ownership place.

If called number is fixed number or the phone number for carrying area code, obtained from the called number The area code of ownership place where the called number.Example, should if the called number dialed is 01012345678 The area code of ownership place where called number is 010, if the called number dialed is 053212345678, this is called The area code of ownership place where Subscriber Number is 0532.

If called number is the mobile number for not carrying area code, belong to where the acquisition called number The area code on ground includes：

502a, the first inquiry request of transmission map E.164 Number server to the telephone number of first IMS network, to cause The E.164 Number server of first IMS network obtains the conversation initial of the called number according to first inquiry request Change protocol universal resource mark SIP URI.

Wherein, the called number is included in first inquiry request, the ENUM of first IMS network is serviced H codes comprising the called number, the area code of ownership place where the called number, the called subscriber number in device Corresponding relation between the home network domain name of ownership place where code.Example, if called number is mobile number 18612345678, then, the H codes of the mobile number are 1234, and the EUNM servers of the first IMS network are from including called subscriber The area code of ownership place where the H codes of number, called number and the home network domain name of called number place ownership place Between corresponding relation in find, the area code corresponding to the H codes (1234) be 010, home network domain is entitled Beijing.ims.cn, and then obtain the SIP URI of the Mobile Directory Number, i.e. Sip：861018612345678@ Beijing.ims.cn, user=phone.

The symbol SIP for the called number that 502b, the E.164 Number server of reception first IMS network are sent URI。

Wherein, the SIP URI of the called number include the called number where ownership place area code and The home network domain name of ownership place where the called number.

502c, obtain from the SIP URI of the called number called number where ownership place area Number.

Step 503, the area code according to ownership place where the called number, determine the called number place Whether ownership place configures the second IMS network and whether second IMS network is supported to enter IMS network nearby, just far goes out IMS network Routing mode.

Specifically, the second IMS network whether is configured, and it is relevant with actual IMS network deployment, generally, dispose IMS Network is predetermined according to different provinces.Example, whether configure IMS network and the IMS nets for callee side Whether network support to enter nearby, just far goes out the routing mode of IMS network, can both be judged by the tandem exchange of Calling Side, It can be judged by the I-CSCF network elements of Calling Side IMS network.

If ownership place configures second IMS network and the 2nd IMS where step 504, the called number Routing mode described in network support, then obtain the IP address of the call treatment network element of second IMS network.

Step 505, the IP address according to the call treatment network element of second IMS network, by the call routing to institute The call treatment network element of the second IMS network is stated, is called so as to the call treatment network element of second IMS network into walking along the street described By.

Further, if the called number is fixed number or the mobile number for carrying area code, institute in step 504 Before the IP address for stating the call treatment network element for obtaining second IMS network, methods described also includes：

Step 5040a, E.164 Number server of first inquiry request to first IMS network is sent, to cause described the The E.164 Number server of one IMS network obtains the SIP URI of the called number according to first inquiry request.

Wherein, not only H codes, described comprising the called number in the E.164 Number server of first IMS network Pair between the home network domain name of ownership place where the area code of ownership place, the called number where called number It should be related to, ownership place returns where the area code, the called number also comprising ownership place where the called number Belong to the corresponding relation between domain names.Example, if called number is fixed number 010123456, from the first IMS nets The ownership of ownership place where the EUNM servers of network from the area code comprising ownership place where called number, called number Found in corresponding relation between domain names, the area code corresponding to the fixed number is 010, and home network domain is entitled Beijing.ims.cn, and then obtain the SIP URI of the Mobile Directory Number, i.e. Sip：8610123456@ Beijign.ims.cn, user=phone.Wherein, user=phone identifies for user, for representing not determining that the user is No is IMS user.

The SIP for the called number that step 5040b, the E.164 Number server of reception first IMS network are sent URI。

Wherein, the SIP URI of the called number include the called number where ownership place area code and The home network domain name of ownership place where the called number.

Step 5040c, obtain from the SIP URI of the called number ownership place where the called number Home network domain name.

Specifically, the IP address of the call treatment network element of second IMS network is obtained described in step 504 to be included：

The dns server of step 504a, the second inquiry request of transmission to first IMS network.

Wherein, the home network domain name of ownership place where the called number is included in second inquiry request, Home network domain name and institute comprising ownership place where the called number in the dns server of first IMS network State the corresponding relation of the IP address of the call treatment network element of the second IMS network.

At the calling for second IMS network that step 504b, the dns server of reception first IMS network are sent Manage the IP address of network element.

Example, if the number of called subscriber is：02112345678, then the S-CSCF network elements of the first IMS network first will It is converted into E.164 number：+ 862112345678, then the S-CSCF network elements of the first IMS network are to the first IMS network E.164 Number server sends the first inquiry request for including the number, and E.164 Number server returns to the SIP URI of the number according to request： sip：862112345678@shanghai.ims.cn, user=phone, wherein, shanghai.ims.cn is called subscriber number The home network domain name of code ownership place.The S-CSCF network elements of first IMS network are received after the home network domain name, to the first IMS The dns server of network sends the second inquiry request, and dns server finds corresponding the according to the home network domain name The IP address of the call treatment network element of two IMS networks, and the IP address of the call treatment network element of the affiliated IMS network in Shanghai City is returned Back to the S-CSCF network elements of the first IMS network, according to the IP address of the call treatment network element of the affiliated IMS network of Shanghai province, it will exhale The call treatment network element for routing to the affiliated IMS network of Shanghai province is, subsequently to be route to calling.

Optionally, when the ownership place where called subscriber configures the second IMS network and the second IMS network is supported to enter nearby IMS network, when just far going out the routing mode of IMS network, perform step 506~507；If ownership place where called number does not have There is configuration second IMS network, perform step 508.

Step 506, determine the called subscriber whether be second IMS network user.

Due to configuring the first IMS in the E.164 Number server of the first IMS network where existing calling subscribe ENUM/DNS of the area code of the user data of network and called subscriber place ownership place to the second IMS network where the ownership place The route of server, if the result that the ENUM/DNS servers of the second IMS network are returned includes the SIP URI of the called subscriber, The user that the called subscriber is the second IMS network is determined, then performs step 507；If the ENUM/DNS services of the second IMS network The result that device is returned does not include the SIP URI of the called subscriber, and it is not the user of the second IMS network to determine the called subscriber, Then perform step 508.

The IP address of step 507, the call treatment network element of acquisition second IMS network；According to second IMS network Call treatment network element IP address, the call request is routed to the call treatment network element of second IMS network so that The call treatment network element for obtaining second IMS network is route to the call request.

Wherein, the result that the E.164 Number server of second IMS network is returned includes the SIP URI of the called subscriber, should The home network domain name of ownership place where called subscriber is included in the SIP URI of called subscriber, is obtained according to the home network domain name The IP address of the call treatment network element of the second IMS network is taken, specifically refers to described in step 504, will not be repeated here.

Step 508, the call request routed at the calling of PSTN network by MGCF network element Network element is managed, to cause the call treatment network element of the PSTN network to route the call request.

A kind of call route method provided in an embodiment of the present invention, including：The call treatment network element of first IMS network is received The call request that the call treatment network element of non-IMS network is sent, the area code of ownership place where obtaining the called number；Root According to the area code of ownership place where the called number, whether ownership place where determining the called number configures second IMS network, and whether support to enter IMS network nearby, just far go out the routing mode of IMS network；If the called number Place ownership place is configured with the second IMS network and second IMS network supports the routing mode, then obtains described second The IP address of the call treatment network element of IMS network；According to the IP address of the call treatment network element of second IMS network, by institute The call treatment network element that call request routes to second IMS network is stated, so as to the call treatment net of second IMS network Member is route to the call request.So, it is being configured with IMS network and is supporting to enter IMS network nearby, just far go out IMS nets The region of the routing mode of network, toll traffic can just be carried by IMS network, no longer as prior art, and toll traffic is only Can be long-distance net loaded by PSTN, but optimal routing mode can be selected according to the deployment scenario of actual IMS network, i.e., it is long Way business is long-distance net loaded or carried by IMS network by PSTN, in addition, toll traffic is carried by IMS network, can be maximum The IP routes of the utilization IMS network of limit, shunt the traffic of PSTN long distance networks, are conducive to energy-saving and emission-reduction, meanwhile, also make IMS nets Network can progressively be replaced equipment power consumption height, the PSTN network that floor space is big, fault rate is high, realize PSTN network to IMS nets Network is seamlessly transitted.

Embodiment three

As shown in figure 4, being a kind of flow chart of call route method provided in an embodiment of the present invention, the call route method Including：

What the call treatment network element that step 601, the call treatment network element of the second IMS network receive the first IMS network was sent Call request, the call request includes the number of called subscriber.

Wherein, the executive agent of the call treatment network element of the second IMS network described in the embodiment of the present invention is called subscriber side The I-CSCF network elements of IMS network, specifically, the I-CSCF network elements of called subscriber side IMS network receive the calling of the first IMS network The call request that processing net element is sent.

The E.164 Number server of step 602, the first inquiry request of transmission to second IMS network, to cause described second The E.164 Number server of IMS network inquires about the SIP URI for whether including the called number according to first inquiry request, And be sent to Query Result in the call treatment network element of second IMS network, first inquiry request comprising the quilt It is Subscriber Number.

Specifically, whether including the number of the called subscriber in the E.164 Number server of the second IMS network of the inquiry, it is In order to judge whether called subscriber is IMS network user, if Query Result is the SIP URI of the number comprising the called subscriber, It is IMS network user then to illustrate the called subscriber, then the I-CSCF of the second IMS network obtains called subscriber's note by inquiring about HSS The S-CSCF of volume, so that call routing is passed through into S-CSCF to called subscriber；If Query Result is not comprising the called subscriber The SIP URI of number, then it is non-IMS network user to illustrate the called subscriber, and the I-CSCF of the second IMS network carries out called number Analysis, routes the call to the MGCF of dialed field, routed the call to by MGCF be called affiliated PSTN network or Mobile network.

The Query Result that step 603, the E.164 Number server of reception second IMS network are sent.

If including the SIP URI of the called number in step 604, the Query Result, send second and inquire about Ask the home subscriber server HSS to second IMS network；Receive the HSS servers transmission of second IMS network The corresponding service call conversation control function net element information of the called number；The call request is routed into the quilt Cry Subscriber Number corresponding service call conversation control function network element, so that the service call conversation control function is exhaled described Request is made to route to the called subscriber.

It should be noted that HSS servers include user profile, the authentication and mandate of user are performed, and can To provide the information of relevant user physical location, the entity with HSS server communications is CSCF network elements.Usual S-CSCF network element meetings User carry out network registry when download and use this file, so when callee side I-CSCF network elements inquire about HSS servers Afterwards, HSS servers will obtain the address of a S-CSCF network element for providing the user service and according to the address by call routing To the S-CSCF network elements, call business is routed to called subscriber by subsequent S-CSCF network elements by the signalling path set up.

If not including the SIP URI of the called number in step 605, the Query Result, according to the quilt Subscriber Number is, the call request is routed to by the MGCF network element of second IMS network described Called subscriber.

A kind of call route method provided in an embodiment of the present invention, the call treatment network element of the second IMS network receives first The call request that the call treatment network element of IMS network is sent, the ENUM for sending the first inquiry request to the second IMS network is serviced Device, make it that whether the E.164 Number server of the second IMS network includes the called number according to the inquiry of the first inquiry request SIP URI, and Query Result is sent to the call treatment network element of the second IMS network；Receive the ENUM clothes of the second IMS network The Query Result that business device is sent；If including the SIP URI of called number in Query Result, send the second inquiry request to The home subscriber server HSS of second IMS network；Receive the called number pair that the HSS servers of the second IMS network are sent The service call conversation control function net element information answered；Call request is routed into the corresponding service call meeting of called number Control function network element is talked about, so that call request is routed to the called subscriber by service call conversation control function；If inquiry knot Do not include the SIP URI of called number in fruit, then according to called number, call request is passed through into the second IMS network MGCF network element route to called subscriber.So, be configured with IMS network and support enter nearby IMS network, Just far go out the region of the routing mode of IMS network, toll traffic can just be carried by IMS network, no longer as prior art, Toll traffic can only be long-distance net loaded by PSTN, but can select optimal route according to the deployment scenario of actual IMS network Mode, i.e. long-distance service are long-distance net loaded or carried by IMS network by PSTN, in addition, toll traffic is held by IMS network Carry, can be route to greatest extent using the IP of IMS network, shunt the traffic of PSTN long distance networks, be conducive to energy-saving and emission-reduction, together When, IMS network is progressively replaced equipment power consumption height, the PSTN network that floor space is big, fault rate is high, realize PSTN Network to IMS network is seamlessly transitted.

Example IV

For the method for routing shown in Fig. 2 to Fig. 4, with reference to Fig. 5, the PSTN network user by Shanghai of caller is called and is Pekinese IMS network mobile subscriber, the mobile number is 13812345678, and Shanghai and Beijing configure IMS network and IMS Network support enters IMS network, just far goes out the routing mode of IMS network nearby, wherein, ENUM/DNS services in the ims network The H codes data, the area code with ownership place where the number and ownership place where the number that phone number is pre-set in device are returned Exemplified by corresponding relation between category domain names, to being specifically routed through under PSTN network user's call IMS network user scenario Journey is described in detail, and specifically includes following steps：

Step 1a, Calling Side PSTN network user initiate call request.

Wherein, the number comprising rear subscriber number and called subscriber in the call request.

Step 2a, Calling Side PSTN end office (EO)s receive the call request and route it to Calling Side PSTN tandem exchanges.

Ownership place configuration where step 3a, Calling Side PSTN tandem exchanges receive the call request and determine rear subscriber number IMS network, and the IMS network support enter IMS network nearby, just far go out the routing mode of IMS network.

Step 4a, the MGCF network elements of Calling Side receive the call request of Calling Side PSTN tandem exchanges transmission and routed it to The I-CSCF network elements of Calling Side.

Step 5a, the I-CSCF network elements of Calling Side obtain called subscriber number by inquiring about the ENUM/DNS servers of Calling Side The area code of code.

Step 6a, Calling Side I-CSCF network elements determine that callee side configures IMS network according to the area code of called number, and The IMS network is supported enter IMS network nearby, just far go out the routing mode of IMS network.

Specifically, in step 5a, E.164 Number server returns to this and is called SIP URI for the number of Beijing user, wherein Comprising ownership place area code 010 and home network domain name beijing.ims.cn where called subscriber, so as to be determined according to area code 010 Ownership place where called subscriber is configured with IMS network.

Step 7a, Calling Side I-CSCF network elements according to the home network domain name in the SIP URI of called number to The dns server of Calling Side initiates inquiry request.

Step 8a, the I-CSCF network elements of Calling Side receive the callee side I-CSCF network elements that the dns server of Calling Side is returned IP address.

It should be noted that E.164 Number server can be integrated in same server or two with dns server Individual separate server.

Step 9a, the I-CSCF network elements of Calling Side route the call to the I-CSCF network elements of callee side according to the IP address.

Step 10a, the I-CSCF network elements of callee side inquire about the HSS servers of callee side.

Specifically, because called subscriber is Pekinese IMS network user, and the number of the called subscriber is 13812345678, the then information for the user that is stored with certainly in the HSS servers of callee side, so the I-CSCF nets of callee side Member inquiry HSS server successes are (i.e. comprising called user information), then calling passes through callee side S-CSCF network elements and SBC network elements It is routed to called subscriber.

So, be configured with IMS network and support enter nearby IMS network, just far go out IMS network routing mode area Domain, toll traffic can just be carried by IMS network, no longer as prior art, and toll traffic can only be held by PSTN long distance networks Carry, but optimal routing mode can be selected, i.e. long-distance service is by PSTN length according to the deployment scenario of actual IMS network It is net loaded on the way or carried by IMS network, in addition, toll traffic is carried by IMS network, IMS nets can be utilized to greatest extent The IP routes of network, shunt the traffic of PSTN long distance networks, are conducive to energy-saving and emission-reduction, meanwhile, IMS network is progressively replaced Equipment power consumption is high, the PSTN network that floor space is big, fault rate is high, realizes PSTN network seamlessly transitting to IMS network.

Embodiment five

For the method for routing shown in Fig. 2 to Fig. 4, with reference to Fig. 6, the PSTN network user by Shanghai of caller is called and is The fixed telephone number user of Pekinese's PSTN network, and the number is 01012345678, and Shanghai and Beijing configure IMS Network, and IMS network support enter IMS network nearby, just far go out the routing mode of IMS network, wherein, in the ims network The area code of ownership place where fixed telephone number is pre-set in ENUM/DNS servers and the ownership of ownership place where the number Exemplified by corresponding relation between domain names, to the specific routing procedure under PSTN network user's call IMS network user scenario It is described in detail, specifically includes following steps：

Step 1b, Calling Side PSTN network user initiate call request.

Wherein, the number comprising rear subscriber number and called subscriber in the call request.

Step 2b, Calling Side PSTN end office (EO)s receive the call request and route it to Calling Side PSTN tandem exchanges.

Ownership place configuration where step 3b, Calling Side PSTN tandem exchanges receive the call request and determine rear subscriber number IMS network, and the IMS network support enter IMS network nearby, just far go out the routing mode of IMS network.

Step 4b, the MGCF network elements of Calling Side receive the call request of Calling Side PSTN tandem exchanges transmission and routed it to The I-CSCF network elements of Calling Side.

The area code of ownership place where step 5b, the I-CSCF network elements of Calling Side obtain called number.

Specifically, for the called subscriber 01012345678 in the present embodiment, the mode that its area code is obtained may be referred to step Rapid 502, it will not be repeated here.

Step 6b, Calling Side I-CSCF network elements determine that callee side configures IMS network according to the area code of called number, and The IMS network is supported enter IMS network nearby, just far go out the routing mode of IMS network.

Step 7b, Calling Side I-CSCF network elements send inquiry request to the E.164 Number server of Calling Side.

Wherein, the number of called subscriber is included in the inquiry request.

Step 8b, the E.164 Number server of Calling Side return to the SIP URI of called number according to the inquiry request.

If specifically, being called as Pekinese's fixed number 01012345678, ENUM/DNS servers can return to this and be called The SIP URI of Subscriber Number：sip：I-CSCFs of 861012345678 the@beijing.ims.cn, user=phone to Calling Side The home network domain name in called subscriber location is included in network element, the SIP URI.

Step 9b, Calling Side I-CSCF network elements according to DNS service from the home network domain name of called subscriber to Calling Side Device initiates inquiry request.

Step 10b, the I-CSCF network elements of Calling Side receive the callee side I-CSCF network elements that the dns server of Calling Side is returned IP address.

Step 11b, the I-CSCF network elements of Calling Side route the call to the I-CSCF network elements of callee side according to the IP address.

Whether step 12b, the ENUM/DNS servers of the I-CSCF network elements inquiry callee side of callee side include called use Family number.

If comprising (i.e. successful inquiring), the called subscriber is that the called subscriber in IMS network user, the present embodiment is IMS The network user, therefore perform step 13b；Otherwise, the called subscriber is non-IMS network user, performs step 14b~16b.

Step 13b, the HSS servers of the I-CSCF network elements inquiry callee side of callee side simultaneously route the call to called use Family.

Specifically, after the I-CSCF network elements of callee side inquire about HSS servers, it is user that HSS servers, which will obtain one, The address of the S-CSCF network elements of service is provided and the S-CSCF network elements, subsequent S-CSCF network elements are routed the call to according to the address By the signalling path set up, call business is routed into called subscriber.

Step 14b, callee side I-CSCF network elements by the ownership place area code of analyzing called number route the call to by It is the MGCF network elements of side.

Step 15b, the MGCF of callee side route the call to PSTN tandem exchanges according to the ownership place area code of called number.

Step 16b, the PSTN end office (EO)s of callee side receive the call request and route it to the PSTN network use of callee side Family.

So, be configured with IMS network and support enter nearby IMS network, just far go out IMS network routing mode area Domain, toll traffic can just be carried by IMS network, no longer as prior art, and toll traffic can only be held by PSTN long distance networks Carry, but optimal routing mode can be selected, i.e. long-distance service is by PSTN length according to the deployment scenario of actual IMS network It is net loaded on the way or carried by IMS network, in addition, toll traffic is carried by IMS network, IMS nets can be utilized to greatest extent The IP routes of network, shunt the traffic of PSTN long distance networks, are conducive to energy-saving and emission-reduction, meanwhile, IMS network is progressively replaced Equipment power consumption is high, the PSTN network that floor space is big, fault rate is high, realizes PSTN network seamlessly transitting to IMS network.

Embodiment six

The need for for network operation, the calling that traffic carrying is carried out by IMS network is needed to carry out business statistics, because This, is for the call route method described in Fig. 2 to Fig. 6, the first IMS network (IMS network of Calling Side) and the second IMS network The call treatment network element of (IMS network of callee side) can call session establishment stage by its IP address be added to Record- In Route header fields, to carry out business statistics to the calling.

It should be noted that in traditional IMS network, I-CSCF network elements are stateless SIP PROXY, so will not Recording conversation state, the i.e. establishment stage in call business, signaling pass through I-CSCF network elements, and the modification of call session and termination Without I-CSCF, so, traditional I-CSCF can not be counted and charging to session.It is therefore desirable to traditional I- The function of CSCF network elements is upgraded.

Specific method is that the call treatment network element of the first IMS network and the second IMS network can be set up in call session Stage adds its IP address or domain name in Record-Route header fields, so that ensure in whole calling procedure (including session Foundation, modification, termination), all signalings all pass through I-CSCF network elements, so can be achieved with carrying out charging and traffic to session Statistics.Wherein, Record-Route header fields are PROXY increased in the request, for forcing the subsequent request in session to be passed through This PROXY.

As shown in fig. 7, for the call route method described in Fig. 2 to Fig. 6, on the basis of this method, by The IP address or home network of the call treatment network element of the first IMS network and the second IMS network are added in Record-Route header fields Network domain name, realization is counted and charging to call business, and the call treatment network element of the second IMS network is in the embodiment of the present invention The I-CSCF network elements of called subscriber side IMS network.

The interaction to the session establishment signaling shown in dotted line frame in Fig. 7 81 is described in detail below, is specifically included：

Step 1c, calling subscribe initiate session establishment signaling to Calling Side MGCF network elements.

Step 2c~6c, Calling Side MGCF network elements receive the session establishment signaling and by Calling Side I-CSCF network elements, master It is side S-CSCF network elements, the I-CSCF network elements of callee side, callee side MGCF network elements to called subscriber.

Step 7c, called subscriber receive the session establishment signaling, generate and send response signaling and give callee side MGCF network elements.

Step 8c~12c, callee side MGCF network elements receive the response signaling and by the I-CSCF network elements of callee side, caller The response message is sent to called subscriber by side S-CSCF network elements, Calling Side I-CSCF network elements, Calling Side MGCF network elements.

Step 13c, calling subscribe, which send, confirms signaling, and passes through Calling Side MGCF network elements, Calling Side I-CSCF network elements, master It is side S-CSCF network elements, the I-CSCF network elements of callee side, callee side MGCF network elements to called subscriber.

Step 14c, Calling Side I-CSCF network elements and callee side I-CSCF network elements are received after the confirmation signaling, are sent charging and are opened Beginning signaling starts charging to Calling Side charge system and callee side charge system.

Specifically, still depending on calling subscribe and called use by the charging of callee side charge system by Calling Side charge system The type at family, i.e., for non-IMS network user, it is desirable to, it is necessary to its charging when being route using IMS network.Example, if Calling subscribe and called subscriber are PSTN network user, then using " entering IMS network nearby " and " just far going out IMS networkings " During routing mode, Calling Side charge system and callee side charge system are required to charging, and example, if calling subscribe is PSTN User, called subscriber is IMS network user, then only needs to carry out charging, callee side IMS network user by the I-CSCF of Calling Side Without charging.

It should be noted that for the IMS network using Session Initiation Protocol, in order to ensure the success rate of calling, improving and using Family is experienced, and in whole calling procedure, the interaction of signaling uses three-way handshake mechanism, example, and called subscriber receives meeting Words are set up after signaling, can send a 200ok signaling (the response signaling i.e. shown in Fig. 7) to calling subscribe, calling subscribe receives To after 200ok signalings, ACK (the confirmation signaling i.e. shown in Fig. 7) can be returned to successively to called subscriber, complete three-way handshake mistake Journey, such as other signalings, the interaction of session modification signaling and session termination signaling are same, are required for sending 200ok signalings, But ACK whether is carried out to 200ok signalings to confirm depending on needing as the case may be.Example, in Session Initiation Protocol, reINVITE letters Order and UPDATE signalings may serve to change calling parameter.Unlike, using during reINVITE signalings, it is necessary to reply ACK； During using UPDATE signalings, it is not necessary to reply ACK.It should be noted that calling subscribe or called subscriber are not drawn into Fig. 6, Receive the ACK returned when session modification signaling and session termination signaling and confirm signaling.Dotted line frame 82, dotted line frame 83, dotted line frame 84 With the transmission process of the response signaling in dotted line frame 85 with the process in dotted line frame 81 as, all forward successively, for letter Change Fig. 6 signalling interactive process, eliminate the repeating process of centre.

When session context needs change, such as voice call is changed to video calling, can be believed by sending session modification Order is modified to session context, and the specific interaction of session modification signaling refers to dotted line frame 82 and dotted line frame 83 in Fig. 7 Shown signalling interactive process, wherein, the session modification signaling of dotted line frame 82 is initiated by calling subscribe, then via Calling Side MGCF network elements, Calling Side I-CSCF network elements, Calling Side S-CSCF network elements, callee side I-CSCF network elements and callee side MGCF network elements are arrived Up to called subscriber, callee side I-CSCF network elements send the confirmation signaling message of session modification signaling message receiving called subscriber Afterwards, charging modification signaling information is sent to Calling Side or callee side charge system, changes charging mode；The session of dotted line frame 83 is repaiied Convert to order to be initiated by called subscriber, via callee side MGCF network elements, callee side I-CSCF network elements, Calling Side S-CSCF nets Member, Calling Side I-CSCF network elements, Calling Side MGCF network elements to calling subscribe, Calling Side or callee side I-CSCF network elements are receiving master After the confirmation signaling of session modification signaling for crying user's transmission, send charging and change signaling information to Calling Side or callee side charging System.

When the session is ended, this session, the friendship of session termination signaling can be terminated by sending session termination signaling Mutual process may be referred to the signalling interactive process shown in dotted line frame 84 and dotted line frame 85 in Fig. 7, and the same session termination signaling can To be initiated by calling subscribe, it can also be initiated by called subscriber, wherein, the session modification signaling of dotted line frame 84 is by calling subscribe Initiate, then via Calling Side MGCF network elements, Calling Side I-CSCF network elements, Calling Side S-CSCF network elements, callee side I-CSCF nets Member and callee side MGCF network elements reach called subscriber, and callee side I-CSCF network elements are receiving called subscriber's transmission session termination signaling After the confirmation signaling message of message, charging termination signaling information is sent to Calling Side or callee side charge system, this time meeting is completed The charging of words；The session modification signaling of dotted line frame 85 is initiated by called subscriber, via callee side MGCF network elements, callee side I- CSCF network elements, Calling Side S-CSCF network elements, Calling Side I-CSCF network elements, Calling Side SBC network elements to calling subscribe, Calling Side or by Side I-CSCF network elements are after the confirmation signaling of session termination signaling of calling subscribe's transmission is received, charging termination signaling letter is sent Cease to Calling Side or callee side charge system, complete the charging of this session, meanwhile, Calling Side or callee side I-CSCF network elements will This time calling is added in traffic measurement, the information such as record call successful rate, call duration.

It should be noted that, it is necessary to identify from PSTN network entering IMS network nearby for the I-CSCF network elements of Calling Side Traffic, and charging is carried out to the traffic of the type, in call list, it is necessary to which increase wherein shows that the traffic is main call switching The mark of type ticket, outgoing type statistics are done to the ticket of the type.Concrete methods of realizing is, according to Calling Side MGCF network elements IP address or home network domain name, the trunk group standard of Calling Side MGCF network elements, rear subscriber number or above-mentioned three It is combined to identify.

Just far go out IMS network, it is necessary to identify for callee side I-CSCF network elements, the traffic of PSTN network is entered nearby, and Charging is carried out to the traffic of the type, in call list, it is necessary to which increase wherein shows that the traffic is by call switching type ticket Mark, calling type statistics are done to the ticket of the type.Concrete methods of realizing is, can be according to callee side I-CSCF network elements IP address or home network domain name represent, can also according to the IP address or home network domain name of Calling Side I-CSCF network elements, Any combination of rear subscriber number or above-mentioned three is identified.

Charging method provided in an embodiment of the present invention, by increasing call treatment network element IP in Record-Route header fields The method of address realize call business is counted and charging function, the information such as the success rate and duration of calling can be entered Row statistics, to the demand of funds when can meet network operation again and safeguard.

Embodiment seven

The embodiments of the invention provide a kind of call routing device 80, as shown in figure 8, the device includes：

Receiving unit 801, the call request for receiving calling subscribe's transmission, the call request includes calling subscribe Number；

Acquiring unit 802, the area code of ownership place where for obtaining the rear subscriber number；

Determining unit 803, for the area code of the ownership place according to where the rear subscriber number, determines the calling subscribe Whether ownership place where number configures the first IMS network, and first IMS network whether support to enter IMS network nearby, it is just remote Go out the routing mode of IMS network；The determining unit 803 is additionally operable to the area of the ownership place according to where the called number Number, whether ownership place where determining the called number configures the second IMS network, and whether second IMS network props up Hold the routing mode；

Routing unit 804, if configuring first IMS network, and institute for ownership place where the rear subscriber number State the first IMS network and support the routing mode, then the call request is routed to the call treatment of first IMS network Network element, to cause the call treatment network element of first IMS network to route the call request.

Further, as shown in figure 9, the call routing device also includes：Adding device 805 and transmitting element 806；

Wherein, the acquiring unit 802, is additionally operable to the area code of ownership place where obtaining the called number；

Determining unit 803, is additionally operable to the area code according to ownership place where the called number, determines the called use Whether ownership place where the number of family configures the second IMS network, and whether second IMS network supports the routing mode；

The adding device 805, for that will determine that result is added in the call request；

The transmitting element 806, for first IMS network will to be sent to added with the call request for determining result Call treatment network element；The second IMS network whether is configured comprising ownership place where the called number in the determination result, And whether second IMS network supports the mark of the routing mode.

A kind of call routing device provided in an embodiment of the present invention, the calling that calling subscribe sends is received by receiving unit Request, the area code of rear subscriber number place ownership place is obtained by acquiring unit, and determining unit is determined where rear subscriber number Whether whether ownership place configures the first IMS network, and support to enter IMS network nearby, just far go out the routing mode of IMS network； , then will by routing unit if ownership place where rear subscriber number is configured with the first IMS network, and supports the routing mode The call request routes to the call treatment network element of the first IMS network, to cause the call treatment network element of the first IMS network to this Call request is route.So, it is being configured with IMS network and is supporting to enter IMS network nearby, just far go out the route of IMS network The region of mode, it is possible to which toll traffic is first routed to local IMS network, is that follow-up toll traffic is held via IMS network Offer condition is provided, optimal routing mode can be selected according to the deployment scenario of actual IMS network.In addition, toll traffic by IMS network is carried, and can be route to greatest extent using the IP of IMS network, be shunted the traffic of PSTN long distance networks, be conducive to energy-conservation Emission reduction, meanwhile, IMS network is progressively replaced equipment power consumption height, the PSTN network that floor space is big, fault rate is high, Realize PSTN network seamlessly transitting to IMS network.

Embodiment eight

The embodiments of the invention provide a kind of call routing device 100, as shown in Figure 10, the device includes：

Receiving unit 1001, for receiving the call request that the call treatment network element of non-IMS network is sent, the calling please Asking includes called number；

Acquiring unit 1002, the area code of ownership place where for obtaining the called number；

Determining unit 1003, for the area code according to ownership place where the called number, determines the called use Whether ownership place where family number configures the second IMS network and whether second IMS network supports to enter nearby IMS network, just Far go out the routing mode of IMS network；

The acquiring unit 1002, if configuring second IMS network for ownership place where the called number And second IMS network supports the routing mode, the IP address of the call treatment network element of second IMS network is obtained；

Routing unit 1004, for the IP address of the call treatment network element according to second IMS network, by the calling Request routes to the call treatment network element of second IMS network, so as to second IMS network call treatment network element to institute Call request is stated to be route.

Further, as shown in Figure 10, the determining unit 1003, is additionally operable to determine whether included in the call request Determine whether ownership place where including the called number in result, the determination result configures the second IMS network, and institute State the mark whether the second IMS network supports the routing mode；

If the acquiring unit 1002 obtains the quilt specifically for not including the determination result in the call request The area code of ownership place where being Subscriber Number.

Further, as shown in figure 11, the call routing device 100 also includes：Transmitting element 1005；Wherein, it is described Transmitting element 1005, if being when not carrying the mobile number of area code, to send the first inquiry request for the called number Telephone number to first IMS network maps E.164 Number server, to cause the E.164 Number server root of first IMS network The session initiation protocol universal resource identifier SIP URI of the called number, institute are obtained according to first inquiry request State to include in the first inquiry request and the quilt is included in the called number, the E.164 Number server of first IMS network Ownership place where the area code of ownership place, the called number where being the H codes of Subscriber Number, the called number Corresponding relation between home network domain name；

The receiving unit 1001 is additionally operable to receive the called use that the E.164 Number server of first IMS network is sent The SIP URI of family number, the area code of ownership place where the SIP URI of the called number include the called number With the home network domain name of ownership place where the called number；

The acquiring unit 1002 is additionally operable to from the SIP URI of the called number obtain the called subscriber number The area code of ownership place where code.

Further, as shown in figure 11, the transmitting element 1005, if it is fixed number to be additionally operable to the called number When code or the mobile number of carrying area code, E.164 Number server of first inquiry request to first IMS network is sent, to cause The E.164 Number server of first IMS network obtains the SIP URI of the called number according to first inquiry request, The area code of ownership place where the E.164 Number server of first IMS network also includes the called number and the called use The corresponding relation of the home network domain name of ownership place where the number of family；

The receiving unit 1001, the described of E.164 Number server transmission for being additionally operable to receive first IMS network is called The SIP URI of Subscriber Number, the area of ownership place where the SIP URI of the called number include the called number Number and the called number where ownership place home network domain name；

The acquiring unit 1002, is additionally operable to from the SIP URI of the called number obtain the called subscriber The home network domain name of ownership place where number.

Further, as shown in figure 11, the transmitting element 1005, is additionally operable to send the second inquiry request to described first The domain name mapping dns server of IMS network, ownership place where second inquiry request includes the called number Home network domain name comprising ownership place where the called number in home network domain name, the dns server and the The corresponding relation of the IP address of two IMS networks；

The receiving unit 1001, be additionally operable to receive and obtain first IMS network dns server send it is described The IP address of second IMS network.

Further, as shown in figure 11, the call routing device 100 also includes：Statistic unit 1006；Wherein, it is described Acquiring unit 1002, is additionally operable to obtain the IP address of the media gateway controlling network element of first IMS network；

The determining unit 1003, is additionally operable to the IP address of the media gateway controlling network element according to first IMS network, Determine the type of call of the call request；

The statistic unit 1006, will be described if the type of call for the call request calls for main call switching The IP address of the call treatment network element of first IMS network is route in Record-Route header fields added to record, to the calling Request carries out business statistics.

A kind of call routing device provided in an embodiment of the present invention, receiving unit receives the call treatment net of non-IMS network The call request that member is sent, the area code of called number place ownership place is obtained by acquiring unit；Determining unit according to Whether the area code of ownership place where called number, ownership place where determining called number configures the second IMS network, with And whether support to enter IMS network nearby, just far go out the routing mode of IMS network；If ownership place configuration where called number There is the second IMS network and second IMS network supports the routing mode, then obtain the call treatment net of the second IMS network The IP address of member；According to the IP address of the call treatment network element of the second IMS network, call request is routed into institute by routing unit The call treatment network element of the second IMS network is stated, so that the call treatment network element of second IMS network enters to the call request Walking along the street by.So, be configured with IMS network and support enter nearby IMS network, just far go out IMS network routing mode region, Toll traffic can just be carried by IMS network, no longer as prior art, and toll traffic can only be long-distance net loaded by PSTN, But optimal routing mode can be selected, i.e. long-distance service is by PSTN long distance networks according to the deployment scenario of actual IMS network Carrying is still carried by IMS network, in addition, toll traffic is carried by IMS network, IMS network can be utilized to greatest extent IP is route, and is shunted the traffic of PSTN long distance networks, is conducive to energy-saving and emission-reduction, meanwhile, IMS network is progressively replaced equipment Power consumption is high, the PSTN network that floor space is big, fault rate is high, realizes PSTN network seamlessly transitting to IMS network.

Embodiment nine

The embodiments of the invention provide a kind of call routing device 120, as shown in figure 12, the device includes：

Receiving unit 1201, for receiving the call request that the call treatment network element of the first IMS network is sent, the calling Request includes called number；

Transmitting element 1202, for sending E.164 Number server of first inquiry request to second IMS network, to cause The E.164 Number server of second IMS network inquires about whether include the called number according to first inquiry request SIP URI, and Query Result is sent in the call treatment network element of second IMS network, first inquiry request and wraps Containing the called number；

The receiving unit 1201, is additionally operable to receive the Query Result that the E.164 Number server of second IMS network is sent；

Routing unit 1203, if for the SIP URI comprising the called number in the Query Result, it is described Acquiring unit sends HSS server of second inquiry request to second IMS network；The receiving unit receives described second The corresponding service call conversation control function net element information of the called number that the HSS servers of IMS network are sent；Will The call request routes to the corresponding service call conversation control function network element of the called number, so as to the service The call request is routed to the called subscriber by CSCF；

The routing unit 1203, if being additionally operable to not include in the Query Result SIP of the called number URI, then according to the called number, by media gateway controlling work(of the call request by second IMS network Energy network element routes to the called subscriber.

Further, as shown in figure 13, the call routing device 120 also includes：

Acquiring unit 1204, is additionally operable to obtain the IP address and described of the call treatment network element of first IMS network The IP address of the MGCF network element of two IMS networks；

Determining unit 1205, is additionally operable to the IP address according to the call treatment network element of first IMS network and described The IP address of the MGCF network element of two IMS nets, determines the type of call of the call request；

Statistic unit 1206, if the type of call for the call request is called relayed call, by the 2nd IMS The IP address of the call treatment network element of network is added in Record-Route header fields, and business system is carried out to the call request Meter.

A kind of call routing device provided in an embodiment of the present invention, the call treatment network element of the second IMS network receives first The call request that the call treatment network element of IMS network is sent, the ENUM for sending the first inquiry request to the second IMS network is serviced Device, make it that whether the E.164 Number server of the second IMS network includes the called number according to the inquiry of the first inquiry request SIP URI, and Query Result is sent to the call treatment network element of the second IMS network；Receive the ENUM clothes of the second IMS network The Query Result that business device is sent；If including the SIP URI of called number in Query Result, send the second inquiry request to The home subscriber server HSS of second IMS network；Receive the called number pair that the HSS servers of the second IMS network are sent The service call conversation control function net element information answered；Call request is routed into the corresponding service call meeting of called number Control function network element is talked about, so that call request is routed to the called subscriber by service call conversation control function；If inquiry knot Do not include the SIP URI of called number in fruit, then according to called number, call request is passed through into the second IMS network MGCF network element route to called subscriber.So, be configured with IMS network and support enter nearby IMS network, Just far go out the region of the routing mode of IMS network, toll traffic can just be carried by IMS network, no longer as prior art, Toll traffic can only be long-distance net loaded by PSTN, but can select optimal route according to the deployment scenario of actual IMS network Mode, i.e. long-distance service are long-distance net loaded or carried by IMS network by PSTN, in addition, toll traffic is held by IMS network Carry, can be route to greatest extent using the IP of IMS network, shunt the traffic of PSTN long distance networks, be conducive to energy-saving and emission-reduction, together When, IMS network is progressively replaced equipment power consumption height, the PSTN network that floor space is big, fault rate is high, realize PSTN Network to IMS network is seamlessly transitted.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with Realize by another way.For example, device embodiment described above is only schematical, for example, the unit Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, such as multiple units or component Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings of device or unit by some interfaces Close or communicate to connect, can be electrical, machinery or other forms.

The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs 's.

In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also That the independent physics of unit includes, can also two or more units it is integrated in a unit.Above-mentioned integrated list Member can both be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.

The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in an embodied on computer readable and deposit In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are to cause a computer Equipment (can be personal computer, server, or network equipment etc.) performs the portion of each embodiment methods described of the invention Step by step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various to store The medium of program code.

Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic； And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and Scope.

Claims (12)

1. a kind of call route method, it is characterised in that including：

The call treatment network element of non-IMS network receives the call request that calling subscribe sends, and the call request includes caller Subscriber Number；

The area code of ownership place where obtaining the rear subscriber number；

Whether the area code of ownership place according to where the rear subscriber number, ownership place where determining the rear subscriber number matches somebody with somebody The first IMS network is put, and whether first IMS network is supported to enter IMS network nearby, just far goes out the routing mode of IMS network；

If ownership place where the rear subscriber number configures first IMS network, and first IMS network supports described Routing mode, then route to the call request call treatment network element of first IMS network, to cause described first The call treatment network element of IMS network is route to the call request；

Also include called number in the call request；Methods described also includes：

The area code of ownership place where obtaining the called number；The area of ownership place according to where the called number Number, whether ownership place where determining the called number configures the second IMS network, and whether second IMS network props up Hold the routing mode；

It will determine that result is added in the call request, and be sent to the call treatment network element of first IMS network；It is described Determine whether ownership place where including the called number in result configures the second IMS network, and second IMS network Whether the mark of the routing mode is supported.

2. a kind of call route method, it is characterised in that including：

The call treatment network element of first IMS network receives the call request that the call treatment network element of non-IMS network is sent, and determines institute State whether to include in call request and determine to include whether called number place ownership place configures in result, the determination result Second IMS network, and whether second IMS network supports the mark of the routing mode；

Also include called number in the call request；

The area code of ownership place where obtaining the called number；

The area code for obtaining called number place ownership place includes：If not including in the call request described true Determine result, then the area code of ownership place where obtaining the called number；

Whether the area code of ownership place according to where the called number, ownership place where determining the called number matches somebody with somebody Put the second IMS network and whether second IMS network is supported to enter IMS network nearby, just far goes out the routing mode of IMS network；

If ownership place where the called number configures second IMS network and second IMS network supports described Routing mode, then obtain the IP address of the call treatment network element of second IMS network；

According to the IP address of the call treatment network element of second IMS network, the call request is routed into the 2nd IMS The call treatment network element of network, so that the call treatment network element of second IMS network is route to the call request.

3. call route method according to claim 2, it is characterised in that the called number be fixed number or Carry the mobile number of area code or do not carry the mobile number of area code；

If the called number is the mobile number for not carrying area code, belong to where the acquisition called number The area code on ground includes：

The telephone number that the first inquiry request is sent to first IMS network maps E.164 Number server, to cause described first The session initiation protocol that the E.164 Number server of IMS network obtains the called number according to first inquiry request leads to With resource identification SIP URI, the called number is included in first inquiry request, first IMS network H codes comprising the called number, the area code of ownership place where the called number, the quilt in E.164 Number server Corresponding relation between the home network domain name of ownership place where being Subscriber Number；

Receive the SIP URI of the called number of the E.164 Number server transmission of first IMS network, the called use Belong to where the area code and the called number of ownership place where the SIP URI of family number include the called number The home network domain name on ground；

The area code of ownership place where the called number is obtained from the SIP URI of the called number.

4. call route method according to claim 3, it is characterised in that if the called number is fixed number Or carry the mobile number of area code, before the IP address of the call treatment network element of acquisition second IMS network, the side Method also includes：

E.164 Number server of first inquiry request to first IMS network is sent, to cause the ENUM of first IMS network Server obtains the SIP URI, the ENUM of first IMS network of the called number according to first inquiry request The area code of ownership place where also including the called number in server and ownership place where the called number The corresponding relation of home network domain name；

Receive the SIP URI of the called number of the E.164 Number server transmission of first IMS network, the called use Belong to where the area code and the called number of ownership place where the SIP URI of family number include the called number The home network domain name on ground；

The home network domain of ownership place where the called number is obtained from the SIP URI of the called number Name.

5. the call route method according to claim 3 or 4, it is characterised in that acquisition second IMS network The IP address of call treatment network element includes：

Send in domain name mapping dns server of second inquiry request to first IMS network, second inquiry request and wrap The called subscriber number is included in the home network domain name of ownership place, the dns server where including the called number The corresponding relation of the home network domain name of ownership place and the IP address of the second IMS network where code；

Receive and obtain the IP address of second IMS network of the dns server transmission of first IMS network.

6. call route method according to claim 2, it is characterised in that methods described also includes：

Obtain the IP address of the media gateway controlling network element of first IMS network；

According to the IP address of the media gateway controlling network element of first IMS network, the type of call of the call request is determined；

If the type of call of the call request calls for main call switching, by the call treatment network element of first IMS network IP address added to record route Record-Route header fields in, to the call request carry out business statistics.

7. a kind of call routing device, it is characterised in that including：

Receiving unit, the call request for receiving calling subscribe's transmission, the call request includes rear subscriber number；

Acquiring unit, the area code of ownership place where for obtaining the rear subscriber number；

Determining unit, for the area code of the ownership place according to where the rear subscriber number, determines the rear subscriber number institute The first IMS network whether is configured in ownership place, and whether first IMS network is supported to enter IMS network nearby, just far goes out IMS The routing mode of network；The determining unit is additionally operable to the area code of the ownership place according to where called number, determines the quilt Whether ownership place where being Subscriber Number configures the second IMS network, and whether second IMS network supports the route side Formula；

Routing unit, if configuring first IMS network, and described first for ownership place where the rear subscriber number IMS network supports the routing mode, then the call request is routed to the call treatment network element of first IMS network, To cause the call treatment network element of first IMS network to route the call request；

The call routing device also includes：Adding device and transmitting element；

The acquiring unit, is additionally operable to the area code of ownership place where obtaining the called number；

The adding device, for that will determine that result is added in the call request；

The transmitting element, for will be sent to added with the call request for determining result at the calling of first IMS network Manage network element；The second IMS network whether is configured comprising ownership place where the called number in the determination result, and it is described Whether the second IMS network supports the mark of the routing mode.

8. a kind of call routing device, it is characterised in that including：

Receiving unit, for receiving the call request that the call treatment network element of non-IMS network is sent, the call request includes Called number；

Determining unit, after the call request of call treatment network element transmission for receiving non-IMS network in the receiving unit, Determine whether to include in the call request and determine in result, the determination result comprising ownership where the called number Whether ground configures the second IMS network, and whether second IMS network supports the mark of the routing mode；

Acquiring unit, the area code of ownership place where for obtaining the called number；

The acquiring unit, if specifically for not including the determination result in the call request, obtaining the called use The area code of ownership place where the number of family；

The determining unit, for the area code of the ownership place according to where the called number, determines the called subscriber number Ownership place where code whether configures the second IMS network and whether second IMS network is supported to enter IMS network nearby, just far gone out The routing mode of IMS network；

The acquiring unit, if ownership place where being additionally operable to the called number configures second IMS network and described Second IMS network supports the routing mode, then obtains the IP address of the call treatment network element of second IMS network；

Routing unit, for the IP address of the call treatment network element according to second IMS network, the call request is route , please to the calling so as to the call treatment network element of second IMS network to the call treatment network element of second IMS network Ask and route.

9. call routing device according to claim 8, it is characterised in that the call routing device also includes：Send Unit,

The transmitting element, if being when not carrying the mobile number of area code, to send first and inquire about for the called number Ask to map E.164 Number server to the telephone number of the first IMS network, to cause the E.164 Number server root of first IMS network The session initiation protocol universal resource identifier SIP URI of the called number, institute are obtained according to first inquiry request State to include in the first inquiry request and the quilt is included in the called number, the E.164 Number server of first IMS network Ownership place where the area code of ownership place, the called number where being the H codes of Subscriber Number, the called number Corresponding relation between home network domain name；

The receiving unit, is additionally operable to receive the called number that the E.164 Number server of first IMS network is sent SIP URI, the area code of ownership place where the SIP URI of the called number include the called number and described The home network domain name of ownership place where called number；

The acquiring unit, is additionally operable to obtain the called number place from the SIP URI of the called number The area code of ownership place.

10. call routing device according to claim 9, it is characterised in that

The transmitting element, if be additionally operable to the called number for fixed number or the mobile number of carrying area code, hair E.164 Number server of first inquiry request to first IMS network is sent, to cause the E.164 Number server of first IMS network The SIP URI of the called number, the E.164 Number server of first IMS network are obtained according to first inquiry request In also include the called number where ownership place area code and the called number where ownership place home network The corresponding relation of network domain name；

The receiving unit, is additionally operable to receive the called number that the E.164 Number server of first IMS network is sent SIP URI, the area code of ownership place where the SIP URI of the called number include the called number and described The home network domain name of ownership place where called number；

The acquiring unit, is additionally operable to obtain the called number place from the SIP URI of the called number The home network domain name of ownership place.

11. the call routing device according to claim 9 or 10, it is characterised in that

The transmitting element, is additionally operable to send domain name mapping dns server of second inquiry request to first IMS network, The home network domain name of ownership place, the dns server where second inquiry request includes the called number In the pass corresponding with the IP address of the second IMS network of the home network domain name comprising ownership place where the called number System；

The receiving unit, is additionally operable to receive and obtains the 2nd IMS that the dns server of first IMS network is sent The IP address of network.

12. call routing device according to claim 8, it is characterised in that described device also includes：Statistic unit；

The acquiring unit, is additionally operable to obtain the IP address of the media gateway controlling network element of the first IMS network；

The determining unit, is additionally operable to the IP address of the media gateway controlling network element according to first IMS network, it is determined that described The type of call of call request；

The statistic unit, if the type of call for the call request calls for main call switching, by the first IMS nets The IP address of the call treatment network element of network is route in Record-Route header fields added to record, and industry is entered to the call request Business statistics.