CN101047628A - System and method for implementing block service of circuit field terminal access packet network - Google Patents
System and method for implementing block service of circuit field terminal access packet network Download PDFInfo
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- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
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Abstract
A method for realizing packet service in circuit domain terminal access packet network includes receiving input information of user network interface by signaling access adaptive entity to carry out conversion from PSTN/ISDN service logic to analog service logic and converting conversion to be SIP terminal service operation process in analog service, making IMB network access circuit domain terminal provide packet service for said process by converting analog service logic to be PSTN/ISDN service logic and by sending user network protocol information to user terminal. The system used for realizing said method is also disclosed.
Description
[technical field]
The present invention relates to communication technical field, relate in particular to a kind of circuit domain terminal and insert the system and method that packet network is realized Packet Service.
[background technology]
IMS (IP Multimedia Subsystem, IM CN subsystem) is as a kind of network based on packet switching, the subsystem of the support IP multimedia service that to be 3GPP (3 generation partner program) propose at Release 5 versions.Its core characteristics be adopt Session Initiation Protocol (Session Initiation Protocol Session initiation Protocol) and with the independence that inserts.IMS is a multimedia control/calling controlling platform on packet domain, supports conversation class and non-conversation class multimedia service, for the multimedia application in future provides a general business platform.Under the development trend of the network integration, many international and domestic organizing all in the network integration scheme of research based on IMS, the NGN basic framework based on IMS of ETSI (ETSI) subordinate TISPAN (Telecommunications and Internet Converged Services and ProtocolsforAdvanced Networking) committee definition mainly comprises CSCF (CallSession Control Function CSCF server) as shown in Figure 1, MGCF (Media Gateway ControlFunction MGCF), IMS-MGW (IMS-Media GateWay), MRFC (MultimediaResource Function Controller Multimedia resource function controller (MRFC)), MRFP (Multimedia ResourceFunction Processor Multimedia resource function processor (MRFP)), BGCF functional entitys such as (Breakout Gateway Control Function interrupt gateway control function).Wherein CSCF is whole server, supports Session Initiation Protocol treatment S IP session.P-CSCF is the inlet that UE inserts the IMS system, has realized Proxy and UserAgent function in Session Initiation Protocol; MGCF and IMS-MGW are and the functional entity of CS territory and PSTN intercommunication, are responsible for the intercommunication of control signaling and Media Stream respectively; MRFC and MRFP are the functional entitys of realizing Multi-Party Conference, and H.248 the MRFC of control aspect by controlling MRFP; BGCF is the separation of IMS territory and external network, and where interconnected with CS territory or PSTN it is chosen in.
The UE that is applied in Fig. 1 framework is a multimedia packets terminal of supporting Session Initiation Protocol, the business with traditional business feature that TISPAN provides to the sip terminal user in NGN (next generation network) is referred to as PSTN/ISDNSIMULATION SERVICE (PSTN/ISDN analog service, this paper will abbreviate analog service as).The SIMULATION business of TISPAN definition comprises: OIP (session originating end sign shows), OIR (demonstration of session originating end identity restriction), TIP (session termination end sign shows), TIR (session termination end sign shows restriction), MCID (malicious call is traced), HOLD (call out and keep), ECT (clear and definite Call Forwarding), CONF (meeting), AOC (advice of charge), ACR (Anonymous Call Rejection), CDIV (forward-shifting service), CW (Call Waiting), MWI (Messages-Waiting indication), CCBS (calling back when busy), CCNR (no response callback); And CLIP (caller ID display), CLIR (caller ID display restriction), COLP (being connected the wire size sign indicating number shows), COLR (be connected the wire size sign indicating number and show restriction), CF (Call Forwarding) etc., detailed business description and operation flow can be with reference to the TISPAN relevant documentations.
At existing network in IMS network evolution process, can directly support the sip terminal of IP interface to be difficult to popularize at short notice, in one period long period of network evolution transition, can be the traditional circuit domain terminal of IMS network insertion, adopting the IMS network architecture is the actual demand of an objective reality for the traditional circuit domain terminal provides the SIMULATION business.
[summary of the invention]
The technical problem to be solved in the present invention is the defective that analog service can not be provided for traditional circuit domain terminal at IMS network in the prior art, how provides circuit domain terminal by inserting the system and method that passes through signalings realization IMS analog services such as SIP, XCAP that adaptive entity realizes that the SIP block terminal is had.
The present invention realizes by following technical scheme:
A kind of circuit domain terminal inserts the system that packet network is realized Packet Service, comprises
Circuit domain terminal equipment and
The IMS network comprises interconnected each other IMS core network and the IMS application server that is used to provide IMS analog service controlled function, and
At least one signaling inserts adaptive entity, be connected between circuit and terminal equipment and the IMS network, by to PSTN or ISDN business operation logic with the mutual conversion between the SIMULATION business operation logic, realize that sip terminal is with the adaptive and conversion between the mutual signaling between the IMS network in circuit domain user network signal and the IMS analog service flow process.
The present invention further improves and is: described signaling inserts adaptive entity by User Network Interface place in circuit territory terminal, inserts the P-CSCF of IMS network by the Gm of IMS network, and the Ut by the IMS network inserts the IMS application server.
The present invention further improves and is that at least one configuration file server of described system inserts adaptive entity by Co interface and signaling and is connected, and inserts the configuration file that adaptive entity provides the service logic transformation rule to signaling.
The present invention further improves and is: it is a SIP integrated access equipment with service logic control, conversion ability that described signaling inserts adaptive entity, or the IAD controller that access media gateway is controlled.
Further, described circuit domain terminal is PSTN or isdn user's terminal.
Further, described Co interface protocol can be protocol interfaces such as SIP.
Further, described User Network Interface be legacy user's network interface or be carried on that grouping wraps include circuit domain terminal User Network Interface signaling information H.248, MGCP, IUA or V5UA protocol interface.
Further, described legacy user's network interface be meant that artificial line user Z interface, ISDN are basic, primary rate interface or V5 interface.
A kind of circuit domain terminal inserts the method that packet network is realized Packet Service, and circuit domain terminal inserts by signaling and carries out between adaptive entity and the IMS network it is characterized in that may further comprise the steps alternately:
801, signaling inserts the input information that adaptive entity is accepted the circuit domain user network interface, carries out the conversion from PSTN or ISDN service logic to the analog service logic, is converted in one or more analog services the sip terminal operation information and issues the IMS network;
802, signaling inserts the analog service information of adaptive entity acceptance from the IMS network, by the conversion of analog service logic to PSTN or ISDN service logic, is converted at least one circuit domain user network interface information and issues circuit domain terminal.
The present invention further improves and is: the input information of the described circuit domain user network interface of step 701 comprises: service feature sign indicating number and/or service parameter, analog subscriber onhook event, isdn user are contained the DSS1 message of supplementary service information behind service feature sign indicating number and/or service parameter, analog subscriber hookflash event, the analog subscriber hooking;
Described sip terminal operation information comprises sip message or the XCAP message that contains analog service information.
The present invention further improves and is: the described analog service information of step 702 is sip message or the XCAP message that includes analog service information;
Described circuit domain user network interface information comprises: announcement information, ring and/or bell signal comprise information, contain the DSS1 message of ISDN supplementary service information or contain the DSS1 message of analog service information in the band.
Further: the described sip message of sip message that contains analog service information: AOC, TIP, TIR, OIP, OIR, MCID, HOLD, ECT, CONF, CCBS, CCNR, CDIV, CW or MWI business in following arbitrary analog service, using.
Further: the DSS1 message of the described ISDN of containing supplementary service information is meant DSS1 FACILITY message or is included in the DSS1 message of information in following arbitrary ISDN supplementary service: CLIP, CLIR, COLP, COLR, CONF, ECT, CCBS, CCNR, MCID, HOLD, CF, AOC or CW business.
A kind of signaling inserts adaptive entity, comprises
First interface is used for connecting circuit territory terminal equipment;
Second interface is used to connect the IMS network;
And
The logical transition device, be used for PSTN or ISDN business operation logic with the mutual conversion between the simulation business operation logic, realize circuit domain user network interface interactive information with sip terminal in the IMS analog service flow process with the adaptive and conversion between the mutual signaling between the IMS network.
Further, described signaling inserts adaptive entity, it is characterized in that also comprising: the 3rd interface is used for the connection profile server.
Further, it is a SIP integrated access equipment with service logic control, conversion ability that described signaling inserts adaptive entity, or the IAD controller that access media gateway is controlled.
Further, described logical transition device comprises a plug-in functional module, is used to carry out PSTN or ISDN business operation logic with the mutual conversion between the simulation business operation logic.
Further, also comprise the configuration file of describing the service logic transformation rule in the described configuration file server, described logical transition device carries out PSTN or the mutual conversion between the simulation business operation logic together of ISDN business operation logic according to this configuration file.
Further, described configuration file is for adopting the configuration file of XML language description.
A kind of signaling inserts the method that adaptive entity obtains configuration file: described signaling inserts adaptive entity and obtains configuration file by the 3rd interface from configuration file server, and configuration file server carries described configuration file by the Session Initiation Protocol conversation message and inserts adaptive entity to described signaling in conversation procedure.
Further, described configuration file server carries configuration file by SIP PUBLISH conversation message and is sent to described signaling and inserts adaptive entity.
Further, may further comprise the steps:
2101, signaling inserts the configuration file of adaptive entity by SIP SUBSCRIBER conversation message booking reader;
2102, configuration file server carries configuration file by SIP NOTIFY conversation message and is sent to signaling and inserts adaptive entity.
A kind of method that realizes the analog subscriber AoC service comprises following steps:
2201, the IMS application server inserts adaptive entity to signaling and sends the conversation message that has analog subscriber AoC service condition code;
2202, signaling inserts adaptive entity and makes response to receiving conversation message;
2203, signaling inserts the described AoC service kind of adaptive Entity recognition, carries out back transmission advice of charge information simulation user terminal and shows.
Further, the described AoC service condition code that has of step 2201 is AOC-D or AOC-E, and described conversation message corresponds to SIP INFO or SIP BYE.
Further, the described advice of charge information of step 2203 is transmitted by User Network Interface FSK or dtmf signal.
Further, step 2203 further comprises: signaling inserts adaptive entity and described AOC business information is converted to H248 andisp/date signal is sent to IAD, transmits advice of charge information to user terminal by IAD by fsk signal and shows.
Further, the described conversation message of step 2201 is INFO or BYE.
Further, step 2203 further comprises: signaling inserts the AOC business information in the adaptive entity extraction message body, translates to the parameter of DSS1 FACILITY information unit, is sent to ISDN terminal by DSS1 FACILITY or DSS1DISCONNECT message.
Owing to adopted above technical scheme, the present invention is further perfect IMS Web-compatible support traditional circuit domain needed concrete enforceable method of user's scheme and technology, make corresponding scheme can obtain actual application, can make operator use unified IMS network and provide professional for various access users such as circuit switch domain terminating end subscriber, wide band multimedia terminal users, and can accomplish unification with following mobile IMS core net, realize the fixing fusion of moving, compatible former PSTN/ISDN/PLMN terminal provides level and smooth evolution scheme; Has very big advantage at aspects such as resource-sharing, the existing cost of investment of protection operator, the cost of investment that reduces operator and management maintenance costs.
[description of drawings]
Fig. 1 is a next generation network IMS Organization Chart.
Fig. 2 is that the IMS network provides SIMULATION service system structure figure for circuit domain terminal.
Fig. 3 is that signaling inserts adaptive entity obtains configuration file alternately with configuration file server flow chart.
Fig. 4 is that analog subscriber activates AoC service (AOC) realization flow figure temporarily.
Fig. 5 is the realization flow figure that analog subscriber is used AoC service (AOC)
Fig. 6 is that analog subscriber is called out maintenance realization flow figure.
Fig. 7 is that the isdn user calls out maintenance realization flow figure.
Fig. 8 is an analog subscriber calling transfer ECT business realizing flow chart.
Fig. 9 is that ECT business realizing flow chart is translated in isdn call.
Figure 10 is that analog subscriber is realized the CONF business process map.
Figure 11 is that the isdn user realizes the CONF business process map.
Figure 12 is the realization flow figure of isdn user's Call Waiting.
Figure 13 is isdn user's Messages-Waiting indication realization flow figure.
Figure 14 is analog subscriber supplementary service registering flow path figure.
Figure 15 is isdn user's supplementary service registering flow path figure.
Figure 16 is that isdn user's terminal realizes the CCBS/CCBR business process map.
[embodiment]
The present invention is further elaborated below in conjunction with the drawings and specific embodiments:
Fig. 2 is that the IMS network provides SIMULATION service system structure figure for circuit domain terminal.As shown in the figure, the traditional circuit domain terminal inserts adaptive entity by signaling and inserts the IMS network.The traditional circuit domain terminal comprises PSTN, ISDN terminal; The IMS network comprises IMS core network and the IMS application server that connects each other; The IMS core network is the IMS core network of normal structure definition such as 3GPP or TISPAN or ITU-T, the IMS application server is the IMS application server of normal structure definition such as 3GPP, TISPAN, ITU-T, be connected with I/S-CSCF (inquiring/service call conversation control function) by ISC interface, be used to provide the IMS SIMULATION controlled function of applied business.
Signaling inserts adaptive entity by User Network Interface place in circuit territory terminal, inserts IMS network P-CSCF (Proxy Call Session Control Function) by Gm, inserts the IMS application server by Ut, inserts configuration file server by the Co interface.Signaling insert adaptive entity realize the User Network Interface signaling with the explanation of IMS SIP signaling, translate, realize the adaptive and conversion between the signaling of the narrow-band user network signal of traditional circuit domain terminal and IMS network; With the mutual conversion between the SIMULATION business operation logic, make the IMS network provide SIMULATION business by PSTN/ISDN business operation logic for the circuit domain terminal that inserts adaptive entity access by signaling.It physically can be a SIP IAD (SIP integrated access equipment) with service logic control, conversion ability that signaling inserts adaptive entity, or the IAD controller that access media gateway is controlled.
The User Network Interface here can be legacy user's network interface,, basic group digit rate interface basic as analog subscriber circuit interface, ISDN, Z interface, S/T interface, V5 interface; When circuit domain terminal accesses to signaling when inserting adaptive entity by other networking entities (as media gateway), User Network Interface also can be carried on that grouping wraps include circuit domain terminal User Network Interface signaling information H.248, protocol interfaces such as MGCP, IUA, V5UA.
The Gm here, Ut are the standard interface that defines in the IMS relevant criterion; The grouping signaling that is based on IP of this interface transmission is as SIP, XCAP etc.; The interface protocol of the IP-based grouping signaling of Co interface is as Session Initiation Protocol.
The present invention is on the basis of the network architecture of Fig. 2, signaling inserts adaptive entity by internal processes control or by accepting the configuration file of configuration file server, carry out of the conversion of PSTN/ISDN service logic with the SIMULATION service logic, according to one or more circuit domain user network operations information, with PSTN/ISDN business operation logic, be adapted for the operation signaling information that sip terminal participates in the SIMULATION operation flow, insert the IMS network by Gm, Ut again; Accepting the SIMULATION business information from the IMS network of Gm, Ut simultaneously, is one or more User Network Interface signaling informations with SIMULATION business operation logic transfer, carries out alternately with circuit domain terminal.
Specifically set forth signaling below in conjunction with Fig. 3 and insert adaptive entity obtains configuration file alternately with configuration file server method:
1, configuration file server sends SIP PUBLISH to signaling and inserts adaptive entity.
Comprise the configuration information that uses XML to describe in the SIP PUBLISH body wherein for the service logic transformation rule.
Signaling inserts adaptive entity, also can be initiatively when configuration file server obtain configuration information, and then above-mentioned steps becomes:
1, signaling inserts adaptive entity and sends SUBSCRIBER message subscribing user configuration information;
2, configuration file server transmission NOTIFY carries XML configuration information to signaling and inserts adaptive entity.
Can finish signaling by said process and insert the acquisition process of adaptive entity for configuration file.Insert adaptive entity with signaling below realize that according to configuration file the user preengages the example of CLIR service temporarily, illustrate that signaling inserts the process that adaptive entity application configuration file carries out the service logic conversion.
1) signaling inserts the configuration of adaptive entity acceptance from configuration server, realizes the interim activation CLIR service of analog subscriber, and the configuration file that adopts XML to describe is:
<?xml?version="1.0"encoding="UTF-8"?>
<profile?xmlns="urn:ietf:params:xml:profile"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:ietf:params:xml:profile:\XML\profile\ppptest.xsd
"state="full"version="0">
<offhook?allow="true">
<to-network?needed="false"/>
<to-user?needed="true"tonetype="DialTone"timelengh="60000"/>
<timer?startup="false"/>
</offhook>
<hooking?allow="false"/>
<dial?allow="true">
<dial-pattern>
<regex?method="invite"
special="Pravicy:header;From:"Anonymous"
<sip:anonymous@anonymous.invalid>"cleanup="true"
tag="temp-OIR">*62</regex>
</dial-pattern>
</dial>
<onhook?allow="false"/>
</profile>
Wherein, at label＜offhook〉in, the action of carrying out when current signaling inserts adaptive entity handles off-hook event is described, attribute allow=" true " describes current permission and handles the off-hook action; Label＜to-network〉message of giving network side when the pre-treatment off-hook is described, attribute allow=" false " expression need not to send message to network side; Label＜to-user〉instruction of giving the user when the pre-treatment off-hook is described, to instruct to sending sound to the user, the sound type is dialing tone (tonetype=" dial-tone "), send 60000ms (timelengh=" 60000 "); Label＜timer〉be described in and need not to start timer (startup=" false ") when handling off-hook event; At label＜hooking〉and label＜onhook in, the processing of current hooking and onhook event has been described respectively, wherein allow=" false " represents the current above-mentioned incident that need not to handle; At label＜dial〉in, the processing of current dialer event has been described, dialer event (allow=" true ") is handled in current permission, allow the user according to given dialing normal form (＜dial-pattern 〉) dialing, the user is when dialling " * 62 ", signaling inserts adaptive entity and sends invite request message (method=" invite "), statement special=" Pravicy:header; From:﹠amp; Quot; Anonymous﹠amp; Quot; ﹠amp; Lt; Sip:anonymous@anonymous.invalid﹠amp; Gt represents; In message, insert header field Pravicy:header and From: " Anonymous "＜sip:anonymous@anonymous.invalid 〉, wherein, additional character＜〉" use escape character (ESC) to replace, and deletion number " * 62 " empty dialing buffer memory (cleanup=" true ")
After signaling inserts adaptive entity reception configuration, dial " * 62 called numbers " as the analog subscriber off-hook, signaling inserts that adaptive entity is dialled the number the user and the configuration file that obtained mates, dialing normal form according to dialer event in the configuration file is handled description, obtain the action that to carry out, send the invite request message by this requirement, in the invite request message user being dialled " called number " inserts among the Request-URI (request-unified resource sign) with the form of tel URL, carry the Privacy header field, be set to " header ", the preceding anonymous keyword of inserting in the From header field.
Wherein, the dialing normal form that provides is " * 62 ", when the user dials " * 62 ", " * 62 " are disposed (cleanup=" tme ") from the number buffering area, continue to accept user's dialing, in the calling of user's initiation, insert header field Pravicy:header and From: " Anonymous "＜sip:anonymous@anonymous.invalid (special=" Pravicy:header; From:﹠amp; Quot; Anonymous﹠amp; Quot; ﹠amp; Lt; Sip:anonymous@anonymous.invalid﹠amp; Gt; ", wherein, additional character＜" use escape character (ESC) to replace) to invite (method=" in the invite ") request.
Need to prove, when signaling inserts mode that adaptive entity adopts plug-in and carries out logical transition, do not need above-mentioned layoutprocedure, be signaling insert adaptive entity automatically analyzing called number * 62 be judged as interim reservation calling identification limit service, in the INVITE of initiation session, insert header field Pravicy:header and revise header field as from: " Anonymous "＜sip:anonymous@anonymous.invalid〉to realize the preengaging OIR business temporarily.
2) signaling inserts the adaptive configuration file that passes through, and realizes isdn user's interim activation CLIR service, and the configuration file that adopts XML to describe is:
<?xml?version="1.0"encoding="UTF-8"?>
<ISDN_Service_Profile
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="C:\Documents?and?Settings\Administrator\
Desktop ISDN.xsd " state=" full " version=" 0 " 〉
<Public_Identiy>28788996</Public_Identiy>
<Service_Profile>
<Condition?ID="0">
<ConditionTypeCNF>false</ConditionTypeCNF>
<SPT-Message?Message_Type="SETUP">
<SPT-IE?IE-name="CALLING_PARTY_NUMBER">
<ConditionNegated>false</ConditionNegated>
<Group>0</Group>
<Field?Field_desc="PI">1</Field>
</SPT-IE>
</SPT-Message>
</Condition>
<Processing>
<Start-line>
<Method>invite</Method>
</Start-line>
<Header>Privacy:header</Header>
<Header>From:Anonymous</Header>
</Processing>
</Service_Profile>
</ISDN_Service_Profile>
Preengage in the caller ID display limitation arrangement at above-mentioned ISDN temporarily, provide the user when signaling inserts adaptive entity handles user conversation request, trigger condition and processing that ISDN preengages CLIR service temporarily.
Wherein, label＜Public_Identiy〉provide user's public identify label, be designated " 28788996 ", at label＜Service_Profile〉in provide the configuration of above-mentioned business,
Its trigger condition is " SETUP " message (＜SPT-Message Message_Type=" SETUP " 〉), comprise cell " CALLING_PARTY_NUMBER " (＜SPT-IEIE-name=" CALLING_PARTY_NUMBER " 〉) in the message, comprise field in the cell and be " PI ", its assignment be 1 (＜FieldField_desc=" PI "〉1＜/Field), after the above-mentioned trigger condition of coupling, signaling inserts the processing＜Processing of adaptive entity〉be: transmission invite message (＜Method〉invite＜/Method 〉), carry in the message Privacy and From header field (＜Header〉Privacy:header＜/Header,＜Header〉From:Anonymous＜/Header).
Signaling inserts adaptive entity receive SETUP message from the isdn user after, mate according to configuration file, PI as wherein dialing number information unit is masked as " 1 " (i.e. restriction shows), then the adaptive entity of signaling inserts in INVITE and is set to " ID " the Privacy header field, and in the FROM header field, insert the Anonymous keyword.
Need to prove equally, when signaling inserts adaptive entity and uses internal processes control to carry out the logical transition process, do not need above-mentioned layoutprocedure, promptly insert setting of adaptive entity according to internal processes according to signaling, carry out business and judge, finish the activation of above-mentioned interim reservation caller number restriction.
Fig. 4 realizes the interim activation of AOC business when adaptive entity inserts pseudo-terminal for signaling inserts, and specifically may further comprise the steps:
1, service request: user's request of making a call, transmit called number * 11*FTN# by User Network Interface, wherein to dial and be called number, * 11* be AOC service feature sign indicating number in the FTN representative.
2, traffic identification, coupling: signaling inserts adaptive entity and resolves user's incoming traffic condition code, is judged as interim activation AOC service feature key.
3, signaling conversion, adaptive: signaling inserts adaptive entity and sends INVITE to P-CSCF by Gm, in INVITE, insert P_AOC header field (also can be other header fields of representing the AOC activation of service, parameter), finish the signaling adaptation procedure of interim activation AOC.
As access terminal and be ISDN, then AOC business step 1～3 process is as follows:
1, service request: the user is by sending call control signalling SETUP message, and the FACILITY information unit carries AOC activation of service composition in the message;
2, signaling inserts adaptive entity and resolves FACILITY information unit in the SETUP message, is judged as the AOC activation of service;
3, signaling conversion, adaptive: signaling inserts adaptive entity and sends INVITE to P-CSCF by Gm, in the conversation request INVITE, insert P_AOC (also can be other header fields of representing the AOC activation of service, parameter) header field, proxy requests AOC activation of service.
Fig. 5 uses the specific implementation process of AOC business for analog subscriber:
1, the IMS application server sends SIPINFO (also can be SIP MESSAGE) message to the signaling that has AOC-D (advice of charge in the communication process) business information and inserts adaptive entity;
2, signaling inserts adaptive entity and uses SIP 200OK message to respond;
3, signaling inserts adaptive entity and carries out the AOC-D service logic, FSK or dtmf signal transmission advice of charge information to pseudo subscriber terminal by User Network Interface show (when analog subscriber inserts by IAD, signaling inserts adaptive entity the data block parameter that the AOC business information is converted in the H248 andisp/date signal is sent to IAD, transmits AOC-D advice of charge information to user terminal by IAD by fsk signal and shows).
4, the IMS application server sends SIP BYE message to the signaling that has AOC-E (by the advice of charge after finishing) business information and inserts adaptive entity;
5, signaling inserts adaptive entity and uses SIP 200OK message to respond
6, signaling inserts adaptive entity and carries out the AOC-E service logic, FSK or dtmf signal transmission advice of charge information to pseudo subscriber terminal by User Network Interface show (when analog subscriber inserts by IAD, signaling inserts adaptive entity the data block parameter that the AOC business information is converted in the H248 andisp/date signal is sent to IAD, transmits AOC-D advice of charge information to user terminal by IAD by fsk signal and shows).
When the access user is the isdn user,
Signaling insert adaptive entity receive have the INFO, BYE message of AOC business information from the IMS application server after, extract message body AOC business information, translate to the relevant parameter of DSS1 FACILITY information unit, be sent to ISDN terminal by DSS1 message such as FACILITY or DISCONNECT.
Specifically set forth the specific implementation process of the ongoing activation of service of session below in conjunction with Fig. 6 and Fig. 7:
Fig. 4 is for after the POTS session sets up, and the flow process that supplementary service HOLD (call out and keep) realizes may further comprise the steps:
1, replenish to call out: the POTS terminal after session is set up, report hookflash event or hooking by User Network Interface after service feature sign indicating number to signaling insert adaptive entity;
2, traffic identification: signaling inserts the User Network Interface input in the adaptive entity parsing user conversation process, and based on context service logic is judged as SIMULATION and calls out maintenance/recovery business;
3, signaling is adaptive: signaling inserts adaptive entity agency and sends re-Invite message to the IMS core net by Gm, revise remote subscriber session SDP and be described as " send only " (when calling out when keeping), " send receive " (when call recovery time), finish the maintenances/recovery business of calling out.
Similar flow process is equally applicable to POTS user's MCID business, specifically may further comprise the steps:
1, service request: the POTS terminal after session is set up, report hookflash event or hooking by User Network Interface after service feature sign indicating number to signaling insert adaptive entity;
2, traffic identification, coupling: signaling inserts the User Network Interface input in the adaptive entity parsing user conversation process, and based on context service logic is judged as SIMULATION MCID service request,
3, signaling is adaptive: signaling inserts adaptive entity agency and sends SUBSCRIBER message to the IMS core net by Gm, subscribes to MCID incident bag, carries out professional activation request, this message will be routed to IMS MCID application service function, to finish the follow-up business operation.
As access terminal and be ISDN, it is as follows that then supplementary services call keeps realization flow, as shown in Figure 7:
1, user terminal sends HOLD message request call hold service;
2, signaling inserts adaptive entity parsing user request and is judged to be call hold service; The industry of going forward side by side affair logical transition sends re-INVTIE message modification SDP by Gm and is described as " send only ";
3-4, signaling inserts the 200OK message that adaptive entity is received P-CSCF, carries out the service logic conversion, sends HOLD ACKNOWLEDGE message to user terminal, the call hold service success.
5, user terminal sends HOLD message request call recovery business;
6, signaling inserts adaptive entity and resolves user's request call maintenance business, carries out the service logic conversion, sends re-INVTIE message modification SDP by Gm and is described as " send receive ";
7-8, signaling inserts the 200OK message that adaptive entity is received P-CSCF, carries out the service logic conversion, starts HOLD ACKNOWLEDGE message to give user terminal, the professional success of call recovery.
Similarly, ISDN application MCID business step is as follows:
1, user terminal sends the FACILITY message request, band MCID service request activate constituent;
2, signaling inserts adaptive entity and receives the laggard industry affair of FACILITY message logical transition, sends SUBSCRIBERSIP message subscribing MCID incident, carries out the operation of SIMULATION MCID service request.
3, signaling inserts adaptive entity and receives from the 200 OK response messages of acting on behalf of the session control node, carries out the SIMULATION service logic to the conversion of ISDN service logic, sends FACILITY message, carries the MCID business and Returns Result component.
Fig. 8 realizes the ECT operation flow for analog subscriber inserts adaptive entity by signaling, specifically may further comprise the steps:
1, after analog subscriber is set up with remote subscriber A, remote subscriber C session, the analog subscriber on-hook;
2, signaling inserts adaptive entity, and according to the onhook event that User Network Interface reports, based on context service logic is judged as the ECT service request;
3, the adaptive entity of signaling is carried out ECT service terminal operation logic, sends the Refer message request and sets up the session of user A to user C, and this message is toggled to the IMS application server by the IMS core net, finishes follow-up business procedure by the IMS application server controls.
Fig. 9 realizes the ECT operation flow for the isdn user inserts adaptive entity by signaling, specifically may further comprise the steps:
1, ISDN terminal sends FACILITY message to signaling and inserts adaptive entity, carries the ECT service request in the message.
2, signaling inserts adaptive entity, resolve the FACILITY message content, be judged as the ECT business, carry out SIMULATIONECT service terminal operation logic, send Refer message by Gm, the session between A and the user C is set up in request, this message will be toggled to the application service controlled function by the IMS core net, finish professional control.
3, signaling inserts adaptive entity and receives that remote subscriber uses SIP 202 Accept response, the success of expression ECT business operation.
4-9, signaling inserts adaptive entity, carries out the translation function of SIMULATION service logic to the ISDN service logic, discharges the session of user terminal with remote subscriber A, remote subscriber C.
Figure 10 realizes the CONF operation flow for analog subscriber inserts adaptive entity by signaling, specifically may further comprise the steps:
1, the user is under the session activation state, and hooking is dialled and made meeting increase square number newly, and these incidents report to signaling by User Network Interface and insert adaptive entity.
2, signaling inserts based on context service logic of adaptive entity, the User Network Interface input information, judge analog subscriber meeting use beginning service logic, carry out of the conversion of PSTN service logic to the SIMULATION service logic, carry out terminal traffic operating process in the CONF business, send INVITE and set up with the session between the meeting control Application service element conference-factory.
3, signaling inserts adaptive entity and carries out SIMULATION terminal traffic operation logic, sends Refer message to the conference applications service control unit, and request conference applications service control unit is set up the session with remote subscriber.
4, user terminal carries out the hooking operation, dials behind the hooking and makes meeting increase square number newly, and this reporting events to signaling inserts adaptive entity.
5, signaling inserts adaptive entity and continues to carry out terminal operation logic in the CONF business, the agency sends Refer message to the conference applications service control unit, and request conference applications service control unit is set up with the session between the newly-increased side of meeting so that the newly-increased side of meeting is added in the meeting.
Figure-11 inserts the flow process that adaptive entity realizes that meeting (CONF) is professional for the isdn user passes through signaling, specifically may further comprise the steps:
1, the isdn user sends SETUP message, and the FACILITY information unit carries [beginning meeting] activate constituent in the message, and this message reports to signaling by user network inferface and inserts adaptive entity;
2, signaling inserts adaptive entity analysis message content, is judged as the meeting conference flow, carries out terminal operation logic in the SIMULATIONCONF business, passes through Gm and sends INVITE to meeting application service function;
3～4, set up the isdn user with the session between the conference applications service function, after the session response message of receiving the application service function, signaling inserts adaptive entity transmission and has the CONNECT message of return results information to the isdn user.
5～8, the isdn user carries out call hold service (idiographic flow is with aforesaid call hold service).
9～10, the isdn user sends FACILITY message and carries [increasing by a side] activate constituent, signaling inserts adaptive entity the ISDN service logic is translated to the SIMULATION service logic, send Refer message to the conference applications service function by Gm, indication conference applications service function is set up the session with remote subscriber, and remote subscriber is added in the meeting.
11, signaling inserts adaptive entity and receives conference applications service function 202 accept message.
12, signaling inserts adaptive entity and carries out the conversion of Simulation service logic to the ISDN service logic, carries [increasing by a side] by DISCONNECT message and Returns Result component.
Figure 12 specifically may further comprise the steps for the isdn user realizes Call Waiting (CW) operation flow by the adaptive entity of signaling:
1, signaling inserts adaptive entity and receives from the new conversation request Invite of IMS core net;
2, signaling inserts adaptive entity and " hurries " for the user according to the business contexts logic determines;
3, signaling inserts adaptive entity and translates to ISDN CW service logic, sends the SETUP message that has indication " nonpassage can be used " and is sent to ISDN terminal, and indicating call is waited for
4, isdn user's terminal uses ALERTING message to respond, and signaling inserts adaptive entity and translates this message for the SIMULATION terminal participates in the CW service logic, sends 182 Queue message to the IMS core net.
The above-mentioned steps flow process be applicable to analog subscriber then realization flow become:
1, signaling inserts adaptive entity and receives from the new conversation request Invite of IMS core net;
2, signaling inserts adaptive entity and " hurries " for the user according to the business contexts logic determines;
3, signaling inserts adaptive entity by the in-band tone mode, and indicating call is waited for;
4, signaling inserts adaptive entity and carries out SIMULATION business operation logic, sends 182 Queue message to the IMS core net.
Figure 13 realizes Messages-Waiting indication (MWI) realization flow for the user inserts adaptive entity by signaling, specifically may further comprise the steps:
1, signaling inserts the MESSAGE message that contains the MWI business information that adaptive entity receives the IMS network, comprises the MWI business information in the message body.
2, signaling inserts adaptive entity and is sent in the irrelevant DSS1 FACILITY message of calling to user terminal, and the MWI business information is included in DISPLAY information unit in the FACILITY message in the Message message body; And transmission corresponding message 200 OK to IMS networks.
Above-mentioned flow process is equally applicable to pseudo subscriber terminal, specifically may further comprise the steps:
1, signaling inserts the MESSAGE message that contains the MWI business information that adaptive entity receives the IMS network, comprises the MWI business information in the message body.
2, signaling inserts adaptive entity and gives user terminal by the FSK or the interior MWI business information of DTMF bell signal transmission MESSAGE message body of User Network Interface.
Figure 14 specifically may further comprise the steps for analog subscriber carries out registration (CDIV) process with the irrelevant supplementary service of session:
1, analog subscriber off-hook dialing, incoming traffic condition code and registration parameter (representing the forward-shifting service registration as * 57*FTN#) insert adaptive entity to signaling;
2, signaling inserts adaptive entity and resolves user's input information, is judged as the business datum enrollment process, extracts service related information according to user's input, and these information translation are by XCAP agreement associated description;
3, signaling inserts adaptive entity and passes through the XCAP agreement of Ut to IMS application server RT register traffic information;
4, signaling inserts adaptive entity, according to the interaction results (XCAP 200 OK) of IMS application server, by User Network Interface to user's play service enrollment results prompt tone.
Above-mentioned steps also can be similarly realizes in ISDN terminal, Figure 13 shows that ISDN function of use view carries out the enrollment process of CDIV, specifically may further comprise the steps:
1, ISDN terminal sends FACILITY message and carries professional register information, and this message is sent to signaling by User Network Interface and inserts adaptive entity;
2, signaling inserts adaptive entity analysis FACILITY message body content (as being Call Forwarding Unconditional (CFU) registration), extracts register information wherein, and these information translation are by XCAP agreement associated description;
3, signaling inserts the register information that adaptive entity will be converted to the XCAP protocol description and registers to the IMS application server by Ut;
4, signaling inserts the enrollment results information (as xcap 200ok confirm) of adaptive entity according to business, carry out the translation function of SIMULATION business operation logic, send and carry the FACILITY message of return results information to ISDN terminal to ISDN business operation logic.
Specify the implementation method of calling out release stage supplementary service CCBS (calling back when busy), CCNR (no response callback) below in conjunction with Figure 16.
Figure 16 realizes the CCBS operation flow for isdn user's terminal inserts adaptive entity by signaling, specifically may further comprise the steps:
1, signaling inserts the 486 BUSY message (the CCBS business is supported in indication) that adaptive entity receives that CCBS application service function sends;
2, signaling inserts adaptive entity and finishes the conversion of SIMUALTION service logic to the ISDN service logic, and transmission has the disconnect message of indication CCBS business information to user terminal;
3-4, user terminal transmission FACILITY message request CCBS business, signaling inserts adaptive entity and carries out the ISDN service logic to the conversion of SIMULATION service logic, sends Subscriber to application service function subscription CCBS business.
5-6, signaling inserts the 200OK response message of adaptive entity according to subscriber, translates to FACILITY and Returns Result component to the caller ISDN terminal
7-8, signaling inserts adaptive entity receive Refer message from the indication call back service of application service after, carry out of the conversion of simulation service logic to the ISDN service logic, send the Facility message indicating remote free time, the notice caller information that makes a call.
Above-mentioned flow process is used in the CCNR business equally, specifically may further comprise the steps:
1, signaling inserts the 180Ringing message (the CCNR business is supported in indication) that adaptive entity receives that CCNR application service function sends;
2, signaling inserts adaptive entity and finishes the conversion of SIMUALTION service logic to the ISDN service logic, and transmission has the ALERTING message of indication CCNR business information to user terminal;
3-4, user terminal transmission FACILITY message request CCBS business, signaling inserts adaptive entity and carries out the ISDN service logic to the conversion of SIMULATION service logic, sends Subscriber to application service function subscription CCNR business.
5-6, signaling inserts the 200OK response message of adaptive entity according to subscriber, translates to FACILITY and Returns Result component to the caller ISDN terminal, carries out the call clearing program according to ISDN CCNR operation flow simultaneously
7-8, signaling inserts adaptive entity receive Refer message from the indication call back service of application service after, carry out of the conversion of simulation service logic to the ISDN service logic, send the Facility message indicating remote free time, the notice caller information that makes a call.
Above-mentioned flow process is equally applicable to analog subscriber, and the CCBS/CCNR business specifically comprises the steps:
1, signaling inserts 486 BUSY message (the CCBS business is supported in indication) or the 180Ringing (indication CCNR business) that adaptive entity receives that agent conversation control function sends;
2, signaling inserts adaptive entity control in-band tone information user terminal is carried out service informing;
3-6, analog subscriber report hooking and service feature sign indicating number, and signaling inserts adaptive entity and resolves the service feature sign indicating number, and are converted to SIMULATION service logic transmission SUBSCRIBER message, carry out the CCBS/CCNR activation of service.
7-8, remote subscriber be after the free time, and signaling inserts adaptive entity and receives REFER message indication callback from the application service function; Signaling inserts adaptive entity and reminds to user's ring, and behind user's off-hook, signaling inserts adaptive entity agency transmission INVITE and sets up callback.
Insert adaptive entity by signaling and realize that OIP, the TIP operational approach of analog subscriber are as follows:
Signaling inserts adaptive entity and receives from the OIP in the IMS network, TIP business information, and signaling inserts the bell signal transmission number information of adaptive entity by User Network Interface.
Same method is applicable to isdn user's OIP, TIP business, and step is as follows:
Signaling inserts adaptive entity and receives from the OIP in the IMS network, TIP business information, and signaling inserts adaptive entity caller or the called number information unit that number information is converted in the DSS1 message is sent to isdn user's terminal by User Network Interface.
Use the present invention, can be in the IMS network, for the PSTN/ISDN terminal provides the SIMULATION that defines in the IMS network business, at PSTN/ISDN in the evolution process of IMS network, can make full use of original circuit domain terminal ability and provide SIMULATION business experience for the user, adopt of the present invention simultaneously, the access that can use same set of IMS network architecture compatible circuit territory terminal, wideband multimedia terminal provides SIMULATION business for it, for PSTN/ISDN provides level and smooth evolution scheme to the evolution of IMS network; Use the IMS network system, place in circuit territory terminal has been avoided the construction of the go-between system in the network evolution process, has protected operator's investment, has reduced running cost.
Claims (34)
1, a kind of circuit domain terminal inserts the system that packet network is realized Packet Service, comprises
Circuit domain terminal equipment and
The IMS network comprises interconnected each other IMS core network and the IMS application server that is used to provide IMS analog service controlled function,
It is characterized in that also comprising:
At least one signaling inserts adaptive entity, be connected between circuit domain terminal equipment and the IMS network, by to PSTN or ISDN business operation logic with the mutual conversion between the simulation business operation logic, realize circuit domain user network interface interactive information with sip terminal in the IMS analog service flow process with the adaptive and conversion between the mutual signaling between the IMS network.
2, system according to claim 1, it is characterized in that: described signaling inserts adaptive entity by User Network Interface place in circuit territory terminal, Gm by the IMS network inserts the P-CSCF of IMS network, and the Ut by the IMS network inserts the IMS application server.
3, system according to claim 1 is characterized in that: also comprise at least one configuration file server, insert adaptive entity by Co interface and signaling and be connected, insert adaptive entity to signaling the configuration file that comprises the service logic transformation rule is provided.
4, according to the described system of 1 to 3 arbitrary claim, it is characterized in that: it is a SIP integrated access equipment with service logic control, conversion ability that described signaling inserts adaptive entity, or the IAD controller that access media gateway is controlled.
5, according to the described system of 1 to 2 arbitrary claim, it is characterized in that: described circuit domain terminal is PSTN or isdn user's terminal.
6, according to claim 2 or 3 described systems, it is characterized in that: described User Network Interface be legacy user's network interface or be carried on that grouping wraps include circuit domain terminal User Network Interface signaling information H.248, MGCP, IUA or V5UA protocol interface; Described Co interface is the Session Initiation Protocol interface.
7, system according to claim 6 is characterized in that: described legacy user's network interface is meant artificial line user Z interface, ISDN is basic or primary rate interface or V5 interface.
8, a kind of circuit domain terminal inserts the method that packet network is realized Packet Service, and circuit domain terminal inserts by signaling and carries out between adaptive entity and the IMS network it is characterized in that may further comprise the steps alternately:
801, signaling inserts the input information that adaptive entity is accepted the circuit domain user network interface, carries out the conversion from PSTN or ISDN service logic to the analog service logic, is converted in one or more analog services the sip terminal operation information and issues the IMS network;
802, signaling inserts the analog service information of adaptive entity acceptance from the IMS network, by the conversion of analog service logic to PSTN or ISDN service logic, is converted at least one circuit domain user network interface information and issues circuit domain terminal.
9, circuit domain terminal according to claim 8 inserts the method that packet network is realized Packet Service, it is characterized in that:
The input information of the described circuit domain user network interface of step 801 comprises: service feature sign indicating number and/or service parameter, analog subscriber onhook event, isdn user are contained the DSS1 message of supplementary service information behind service feature sign indicating number and/or service parameter, analog subscriber hookflash event, the analog subscriber hooking;
Described sip terminal operation information comprises sip message or the XCAP message that contains analog service information.
10, circuit domain terminal according to claim 8 inserts the method that packet network is realized Packet Service, it is characterized in that:
The described analog service information of step 802 is sip message or the XCAP message that includes analog service information;
Described circuit domain user network interface information comprises: announcement information, ring and/or bell signal comprise information, contain the DSS1 message of ISDN supplementary service information or contain the DSS1 message of analog service information in the band.
11, insert the method that packet network is realized Packet Service according to claim 9 or 10 described circuit domain terminals, it is characterized in that: the described sip message of sip message that contains analog service information: advice of charge AOC in following arbitrary analog service, using, session termination end sign shows TIP, session termination end sign shows restricted T IR, session originating end sign shows OIP, session originating end identity restriction shows OIR, MCID is traced in malicious call, call out and keep HOLD, clear and definite Call Forwarding ECT, meeting CONF, calling back when busy CCBS, no response callback CCNR, forward-shifting service CDIV, Call Waiting CW or Messages-Waiting indication MW business.
12, insert the method that packet network is realized Packet Service according to claim 9 or 10 described circuit domain terminals, it is characterized in that: the DSS1 message of the described ISDN of containing supplementary service information is meant DSS1 FACILITY message or is included in the DSS1 message of information in following arbitrary ISDN supplementary service: caller ID display CLIP, caller ID display restriction CLIR, be connected the wire size sign indicating number and show COLP, be connected the wire size sign indicating number and show restriction COLR, meeting CONF, clear and definite Call Forwarding ECT, calling back when busy CCBS, no response callback CCNR, MCID is traced in malicious call, call out and keep HOLD, Call Forwarding CF, advice of charge AOC or Call Waiting CW business.
13, a kind of signaling inserts adaptive entity, it is characterized in that: comprise
First interface is used for connecting circuit territory terminal equipment;
Second interface is used to connect the IMS network;
And
The logical transition device, be used for PSTN or ISDN business operation logic with the mutual conversion between the simulation business operation logic, realize circuit domain user network interface interactive information with sip terminal in the IMS analog service flow process with the adaptive and conversion between the mutual signaling between the IMS network.
14, signaling according to claim 13 inserts adaptive entity, it is characterized in that: also comprise the 3rd interface, be used for the connection profile server.
15, signaling according to claim 13 inserts adaptive entity, it is characterized in that: it is a SIP integrated access equipment with service logic control, conversion ability that described signaling inserts adaptive entity, or the IAD controller that access media gateway is controlled.
16, insert adaptive entity according to claim 13 or 14 described signalings, it is characterized in that: described logical transition device comprises a plug-in functional module, is used to carry out PSTN or ISDN business operation logic with the mutual conversion between the simulation business operation logic.
17, signaling according to claim 14 inserts adaptive entity, it is characterized in that: also comprise the configuration file of describing the service logic transformation rule in the described configuration file server, described logical transition device carries out PSTN or the mutual conversion between the simulation business operation logic together of ISDN business operation logic according to this configuration file.
18, signaling according to claim 17 inserts adaptive entity, it is characterized in that: described configuration file is for adopting the configuration file of XML language description.
19, a kind of signaling inserts the method that adaptive entity obtains configuration file: described signaling inserts adaptive entity and obtains configuration file by the 3rd interface from configuration file server, and configuration file server carries described configuration file by the Session Initiation Protocol conversation message and inserts adaptive entity to described signaling in conversation procedure.
20, signaling according to claim 19 inserts the method that adaptive entity obtains configuration file, it is characterized in that: described configuration file server carries configuration file by SIP PUBLISH conversation message and is sent to described signaling and inserts adaptive entity.
21, signaling according to claim 19 inserts the method that adaptive entity obtains configuration file, it is characterized in that may further comprise the steps:
2101, signaling inserts the configuration file of adaptive entity by SIP SUBSCRIBER conversation message booking reader;
2102, configuration file server carries configuration file by SIP NOTIFY conversation message and is sent to signaling and inserts adaptive entity.
22, a kind of method that realizes the analog subscriber AoC service comprises following steps:
2201, the IMS application server inserts adaptive entity to signaling and sends the conversation message that has analog subscriber AoC service condition code;
2202, signaling inserts adaptive entity and makes response to receiving conversation message;
2203, signaling inserts the described AoC service kind of adaptive Entity recognition, carries out back transmission advice of charge information and shows to pseudo subscriber terminal.
23, the method for realization analog subscriber AoC service according to claim 22, it is characterized in that: step 2201 is described, and to have the AoC service condition code be the advice of charge AOC-D in the communication process or by the advice of charge AOC-E after finishing, described conversation message corresponds to SIP INFO, SIP MESSAGE or SIP BYE.
24, the method for realization analog subscriber AoC service according to claim 23 is characterized in that: the described advice of charge information of step 2203 is transmitted by User Network Interface FSK or dtmf signal.
25, the method for realization analog subscriber AoC service according to claim 23, it is characterized in that step 2203 further comprises: signaling inserts adaptive entity and described AOC business information is converted to H248 andisp/date signal is sent to IAD, transmits advice of charge information to user terminal by IAD by fsk signal and shows.
26, the method for realization analog subscriber AoC service according to claim 22 is characterized in that: the described conversation message of step 2201 is INFO or BYE.
27, the method for realization analog subscriber AoC service according to claim 26, it is characterized in that step 2203 further comprises: signaling inserts the AOC business information in the adaptive entity extraction message body, translate to the parameter of DSS1FACILITY information unit, be sent to ISDN terminal by DSS1 FACILITY or DSS1 DISCONNECT message.
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| CN200610077921.3A CN101047628A (en) | 2006-03-30 | 2006-04-26 | System and method for implementing block service of circuit field terminal access packet network |
| PCT/CN2006/003633 WO2007115455A1 (en) | 2006-03-30 | 2006-12-27 | A method device and system for the circuit switched domain terminals accessing packet network realizing packet service |
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| CN200610034822.7 | 2006-03-30 | ||
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| CN200610077921.3A CN101047628A (en) | 2006-03-30 | 2006-04-26 | System and method for implementing block service of circuit field terminal access packet network |
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| WO2009079960A1 (en) * | 2007-12-25 | 2009-07-02 | Huawei Technologies Co., Ltd. | Method, system and equipment for outband dtmf signaling interworking |
| CN101742448A (en) * | 2008-11-26 | 2010-06-16 | 华为技术有限公司 | Method, device and system for realizing call forwarding service |
| CN102027800A (en) * | 2008-03-31 | 2011-04-20 | 法国电信公司 | Method of managing a data transmission service |
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| US20030210678A1 (en) * | 2002-05-10 | 2003-11-13 | Nokia Corporation | Functionality split between mobile terminal and terminal equipment for internet protocol multimedia signal exchange |
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