WO2006089463A1 - Méthode pour combiner une émulation de réseau commuté/rnis dans un système ims et système implémentant ladite méthode - Google Patents

Méthode pour combiner une émulation de réseau commuté/rnis dans un système ims et système implémentant ladite méthode Download PDF

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Publication number
WO2006089463A1
WO2006089463A1 PCT/CN2005/000246 CN2005000246W WO2006089463A1 WO 2006089463 A1 WO2006089463 A1 WO 2006089463A1 CN 2005000246 W CN2005000246 W CN 2005000246W WO 2006089463 A1 WO2006089463 A1 WO 2006089463A1
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WO
WIPO (PCT)
Prior art keywords
network
gateway
controller
switched telephone
terminal
Prior art date
Application number
PCT/CN2005/000246
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English (en)
Chinese (zh)
Inventor
Peilin Yang
Jun Hong
Xiaokun Xu
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to CN200580048532.1A priority Critical patent/CN101124812B/zh
Priority to PCT/CN2005/000246 priority patent/WO2006089463A1/fr
Publication of WO2006089463A1 publication Critical patent/WO2006089463A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13098—Mobile subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13196—Connection circuit/link/trunk/junction, bridge, router, gateway
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13204—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13209—ISDN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13335—Simulation, emulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13348—Channel/line reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13389—LAN, internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements

Definitions

  • the present invention relates to a method for integrating a switching system in a telecommunications field and a system for implementing the same, and more particularly to a public entity that integrates a traditional terminal under an IP Multimedia Subsystem (IMS) architecture.
  • IMS IP Multimedia Subsystem
  • PSTN/ISDN Public Switched Telephone Network I Integrated Services Digital Network
  • PSTN/ISDN Public Switched Telephone Network I Integrated Services Digital Network
  • the switching systems in the current telecommunications field are basically concentrated on fixed network switching systems and mobile network switching systems. They appear as a stand-alone system in the operating environment, either supporting only fixed switching networks or only mobile switching networks. .
  • many operators are full-service axe operators. They operate both mobile and fixed services. For them, it is not only necessary to spend money to build fixed networks and mobile networks, but also to fix them.
  • Network management maintenance costs for networks and mobile networks Therefore, a core network system that supports both fixed access mode and mobile access mode is proposed, which not only reduces the investment and construction cost of the operator, but also reduces the network management and maintenance cost of the network.
  • IMS is the 3rd Generation Partnership Project) (hereinafter referred to as 3GPP) Subsystem superimposed on the General Packer Radio Service network (hereinafter referred to as GPRS) to support IP multimedia services, as shown in Figure 1, its core feature is the use of session initial The Session Initiation Protocol (hereinafter referred to as the SIP protocol) acts as a call control protocol and implements independence from the access network.
  • SIP protocol The Session Initiation Protocol
  • IMS can achieve the independence of the access network, at present, IMS only supports the mobile access modes of the second generation (2G) and the 3rd generation (hereinafter referred to as 3G). It is still unable to support fixed access methods. Under the development trend of network convergence, some working organizations, operators and equipment vendors in China and other countries are actively studying IMS-based network convergence solutions to provide fixed access methods.
  • the present invention has been developed to solve the technical problem that the IMS can not support the fixed access mode.
  • One object of the present invention is to provide a method for merging the PSTN/ISDN emulation of the legacy terminal under the IMS architecture to achieve the fixed
  • the network is integrated with the mobile network.
  • Another object of the present invention is to provide a system that implements the above method and integrates traditional PSTN/ISDN emulation.
  • the present invention provides a method for merging PSTN/ISDN emulation of a legacy terminal under an IMS architecture, which is characterized by the following steps - 51.
  • At least include a Call Session Control Function (hereinafter referred to as CSCF), a Media Gateway Control Function (hereinafter referred to as MGCF), and an Exit Gateway Controller (Breakout Gateway Control Function) (hereinafter referred to as BGCF), Home Subscriber Server (HSS) and Subscription Locator Function (hereinafter referred to as SLF), which can implement the IMS architecture of 3G terminal user multimedia services, and add an emulation gateway controller ( Emulation Gateway Control Function) (hereinafter referred to as EGCF);
  • CSCF Call Session Control Function
  • MGCF Media Gateway Control Function
  • BGCF Exit Gateway Controller
  • HSS Home Subscriber Server
  • SLF Subscription Locator Function
  • GW gateway
  • GW gateway
  • the EGCF has a corresponding interface with the CSCF, the BGCF, the HSS, and the GW, respectively.
  • the interface between the EGCF and the CSCF can forward the traditional PSTN/ISDN emulation user-initiated session signaling to the CSCF, and can forward the CSCF-side user-initiated session signaling to the EGCF.
  • the interface between the EGCF and the BGCF can forward the signaling by the PSTN/ISDN emulation user to the user under the network interworking with the Media Gateway Control Function (hereinafter referred to as MGCF).
  • MGCF Media Gateway Control Function
  • the above interface between the EGCF and the HSS supports the transfer of information between the HSS and the EGCF.
  • the interface between the EGCF and the GW controls the gateway through the media gateway control protocol (including H.248/MGCP/SIP/H.232, etc.), and can implement PSTN/ISDN emulation. User access.
  • media gateway control protocol including H.248/MGCP/SIP/H.232, etc.
  • the network that communicates with the MGCF includes a network such as PSTN/ISDN.
  • the information transmitted between the HSS and the EGCF includes information such as allocation information and user information of the EGCF.
  • the GW can connect the traditional PSTN/ISDN terminal to the packet network, complete voice/fax conversion on the PSTN/ISDN terminal side, and voice/fax on the terminal side of the packet network side, and accept the EGCF through the gateway control protocol. control.
  • the present invention also proposes a system for integrating PSTN/ISDN emulation of a legacy terminal under an IMS architecture.
  • a new logical network element entity, EGCF is proposed.
  • the gateway On the fixed access side, the gateway is connected to the traditional PSTN/ISDN terminal, and the EGCF controls the gateway through the media gateway control protocol.
  • the PSTN/ISDN emulation function for the legacy terminal is implemented under the IMS architecture.
  • the system for merging PSTN/ISDN emulation in the IMS system includes EGCF and edge connections.
  • the EGCF mainly performs the following functions: controlling the gateway through the media gateway control protocol; receiving the call request initiated by the traditional PSTN/ISDN terminal, and forwarding the call request to the network to which the destination user belongs; receiving other network elements or starting the network
  • the destination user is a call request of a traditional PSTN/ISDN terminal; interacting with the HSS to obtain user information and the like.
  • the above EGCF has corresponding interfaces with CSCF, BGCF, HSS and GW, respectively.
  • the above-mentioned conventional terminal device is connected to the packet network through the fixed access side of the GW.
  • IMS which represents the development direction of the next generation network, will eventually provide rich multimedia services for intelligent terminal users.
  • the circuit domain will coexist with the multimedia domain for a long time. Therefore, support the tradition under the IMS architecture.
  • PSTN/ISDN terminal emulation is very necessary, but when the circuit domain does not exist, in order not to affect the IMS architecture supporting multimedia services, under the original IMS core architecture, a new logical network element EGCF supports PSTN/ISDN.
  • the simulation not only realizes the IMS system to provide multimedia services for mobile users, but also provides the PSTN/ISDN emulation function of the traditional terminal, and realizes the fusion of the fixed and mobile networks under the IMS architecture. Therefore, the fusion system of the present invention, It not only facilitates the use of users, but also enhances the market competitiveness of telecom operators.
  • Figure 1 is a basic architecture diagram of the 3GPP IMS core control layer.
  • Figure 2 is an IMS architecture diagram supporting PSTN/ISDN emulation.
  • FIG. 3 is a block diagram of a preferred embodiment of a fixed access of a PSTN/ISDN emulation supporting a legacy terminal in a WCDMA network based on a 3GPP architecture.
  • the invention is an access method for supporting PSTN/ISDN simulation of a traditional terminal under the IMS architecture, and realizing a method and an architecture for combining mobile and fixed networks.
  • This system is mainly composed of network element entities such as CSCF, MGCF, BGCF, HSS and SLF under the current IMS architecture, radio access network and its mobile terminal, EGCF supporting PSTN/ISDN emulation and corresponding gateway and its traditional PSTN.
  • /ISDN fixed terminal component as shown in Figure 2, the mobile user can communicate with the traditional PSTN/ISDN fixed terminal user via the gateway device.
  • FIG. 3 shows a preferred embodiment of the fixed access of the PSTN/ISDN emulation supporting the legacy terminal in the WCDMA network based on the 3GPP architecture.
  • HSS 101
  • EGCF 200
  • inquiry call session controller I-CSCF 201
  • service call session controller S-CSCF 202
  • BGCF BGCF
  • MGCF MGCF
  • gateway of traditional PSTN/ISDN fixed terminal 301
  • packet switched network equipment gateway of GPRS network
  • GGSN Gateway GPRS Supporting Node
  • SGSN Serving GPRS Supporting Node
  • RNS Radio Network Subsystem
  • the remaining network element entities can implement IP multimedia services in current WCDMA networks, and with SIP
  • the combination of services such as AS, OSA SCS and intelligent network provides colorful multimedia services for mobile users.
  • the EGCF (200) controls the protocol control through the media gateway.
  • PSTN/ISDN gateway (301) of the legacy terminal and access to the traditional PSTN/ISDN fixed terminals (701, 702 and 703), and finally implemented on the IMS subsystem, not only providing multimedia calls to the mobile terminal Control, and achieve integration with fixed access methods, providing IMS services for traditional PSTN/ISDN fixed terminals.
  • a mobile user (601) shown in FIG. 3 is called to call the traditional PSTN/ISDN emulation terminal user ( The typical flow of 701), and the typical process of the traditional PSTN/ISDN emulation end user (701) calling the user (801) under the PSTN/ISDN network, the specific process is as follows.
  • the mobile subscriber (601) and the traditional PSTN/ISDN emulated end user (701) are both registered in the IMS domain supported by the invention (!spoon control).
  • the mobile subscriber (601) communicates with the GGSN (401) and SGSN (402) network elements of the GPRS network and the IMS subsystem by the first network element node P-CSCF (203) of the mobile subscriber.
  • the simulated PSTN/ISDN fixed terminal user (701) requests to establish a call;
  • the P-CSCF (203) forwards the call request to the S-CSCF according to the name of the owned S-CSCF recorded in the mobile subscriber registration procedure (202);
  • the S-CSCF (202) After receiving the call request, the S-CSCF (202) processes the service requirement of the mobile user (601), and performs destination address analysis, and finds that the destination user is a user under the home domain. Forward the call request to the I-CSCF of the home domain (201);
  • the I-CSCF (201) by querying the HSS (101), knows that the user belongs to the EGCF (200), and forwards the call request to the EGCF (200) of the home domain;
  • the EGCF (200) finds that the destination user is the traditional PSTN/ISDN fixed terminal user to which the EGCF (200) belongs, and then passes the media gateway control protocol to the gateway of the traditional PSTN/ISDN fixed terminal ( 301) initiating a call request;
  • the gateway (301) of the conventional PSTN/ISDN fixed terminal initiates a call request to the fixed terminal user (701);
  • the gateway (301) of the traditional PSTN/ISDN fixed terminal notifies the EGCF (200) to respond to the call request;
  • the I-CSCF (201) responds to the S-CSCF (202);
  • the S-CSCF (202) responds to the P-CSCF (203);
  • the P-CSCF (203) passes the GGSN (401) and the SGSN (402) network element of the GPRS network, and the RNS (501) forwards the response to the mobile user (601);
  • the mobile terminal (601) determines the media resources required for the session, and returns a response confirmation to the P-CSCF (203);
  • the S-CSCF (202) forward response is confirmed to the I-CSCF (201);
  • the I-CSCF (201) forward response is confirmed to EGCF (200);
  • EGCF (200) returns confirmation to I-CSCF (201) and informs the traditional The gateway (301) of the PSTN/ISDN fixed terminal reserves corresponding resources for the session;
  • the S-CSCF (202) forward confirmation confirms the P-CSCF (203);
  • the P-CSCF (203) passes the GGSN (401) and the SGSN (402) network element of the GPRS network, and the RNS (501) forwards the confirmation confirmation to the mobile terminal (601);
  • the mobile terminal (601) reserves a success message to the P-CSCF (203).
  • the P-CSCF (203) forwards the resource reservation success message to the S-CSCF (202);
  • the S-CSCF (202) forwards the resource reservation success message to the I-CSCF (201);
  • the I-CSCF (201) forwards the resource reservation success message to the EGCF (200);
  • the gateway (301) of the traditional PSTN/ISDN fixed terminal notifies the EGCF (200) after the allocation of the session resource is completed;
  • the EGCF (200) reserves a success message to the I-CSCF (201) forwarding receiver resource;
  • the I-CSCF (201) forwards the success message to the S-CSCF (202) to the receiver resource;
  • the S-CSCF (202) reserves a success message to the P-CSCF (203) forwarding receiver resource;
  • the RNS (501) forwards the receiver resource reservation success message to the mobile terminal (601);
  • the gateway (301) of the traditional PSTN/ISDN fixed terminal notifies the EGCF (200) that the fixed terminal (701) is ringing. Prompt
  • the EGCF (200) forwards the temporary ringing information to the I-CSCF (201);
  • the I-CSCF (201) forwards the temporary ringing information to the S-CSCF (202);
  • the S-CSCF (202) forwards the temporary ringing information to the P-CSCF (203);
  • P-CSCF (203) via the GPRS network GGSN (401) and SGSN (402) network element, RNS (501) forwards the temporary response ringing information to the mobile terminal (601);
  • the mobile terminal (601) prompts the mobile user to remind the destination user;
  • the gateway (301) of the traditional PSTN/ISDN fixed terminal notifies the EGCF (200), and the fixed terminal user (701) has answered;
  • the mobile user After receiving the final response of the call request, the mobile user (601) returns a call confirmation message to the P-CSCF (203);
  • the P-CSCF (203) forwards the call confirmation message to the S-CSCF (202);
  • the S-CSCF (202) forwards the call confirmation message to the I-CSCF (201);
  • I-CSCF (201) forwards the call confirmation message to the EGCF (200);
  • the mobile user (601) establishes a media stream with the fixed terminal user (701) via the gateway (301) of the PSTN/ISDN fixed terminal to implement the call; 45. After the call ends, the mobile user (601) hangs up, and sends the on-hook message to the P-CSCF (203) via the RNS (501) and the GGSN (401) and SGSN (402) network elements of the GPRS network;
  • P-CSCF (203) forwards the on-hook request to the S-CSCF (202);
  • the S-CSCF (202) forwards the on-hook request to the I-CSCF (201);
  • I-CSCF (201) forwards the on-hook request to the EGCF (200);
  • the EGCF (200) notifies the gateway (301) of the PSTN/ISDN fixed terminal to hang up the request, and returns an on-hook response to the I-CSCF (201);
  • the gateway (301) of the PSTN/ISDN fixed terminal releases the resources allocated for the session;
  • I-CSCF (201) forwards the hook response to the S-CSCF (202);
  • the S-CSCF (202) forwards the response to the P-CSCF (203);
  • the P-CSCF (203) responds to the GGSN (401) and SGSN (402) network elements of the GPRS network, and the RNS (501) forwards to the mobile user (601).
  • the traditional simulated PSTN/ISDN fixed terminal user (701) requests the user (801) under the PSTN/ISDN network to establish a call;
  • the gateway (301) of the PSTN/ISDN fixed terminal notifies the EGCF (200) end user to request to establish a call request through the media gateway control protocol after receiving the user call request; 3. After receiving the notification request, the EGCF (200) performs a number analysis on the destination user, and finds that the destination user is a user of the network, and sends a call request to the BGCF (204);
  • the BGCF (204) determines that the destination user is a user under the PSTN network (901) interconnected by the network, selects the MGCF (205) that interworks with the PSTN network (901), and sends the call request to the MGCF (205). ;
  • the MGCF (205) notifies the Media Gateway (hereinafter referred to as MGW) to create a connection through the media gateway control protocol, and determines the media resource description information of the MGW;
  • the MGCF (205) includes the media resource description information allocated by the media gateway in the call response, and forwards to the BGCF (204);
  • BGCF forward call response to EGCF (200);
  • the EGCF (200) notifies the gateway (301) of the PSTN/ISDN fixed terminal to receive the call response;
  • the gateway (301) of the PSTN/ISDN fixed terminal After receiving the call response, the gateway (301) of the PSTN/ISDN fixed terminal prepares to allocate the corresponding resource and notifies the EGCF (200);
  • the EGCF (200) sends a response confirmation to the BGCF (204) for the resources required to successfully reserve the session;
  • the BGCF (204) forward response is confirmed to the MGCF (205);
  • the MGCF (205) checks the connection through the media gateway control protocol, instructs the MGW to reserve the resources required for the session, and returns a confirmation message to the initiator.
  • the EGCF (200) After receiving the confirmation confirmation message, the EGCF (200) confirms the PSTN/ISDN fixed.
  • the BGCF (204) forwards the resource reservation success message to the MGCF (205);
  • the MGCF (205) After receiving the resource, the MGCF (205) initiates a call request message to the user (801) in the PSTN network via the PSTN network (901), and returns a message for successfully reserving the resource to the initiator.
  • the MGCF (205) After receiving the reminder message sent by the user (801) in the PSTN network, the MGCF (205) sends a temporary response ringback message to the BGCF (204);
  • the BGCF (204) forwards the temporary response to the ringback information to the EGCF (200);
  • the EGCF (200) notifies the gateway (301) of the PSTN/ISDN fixed terminal that the destination user is being notified through the media control protocol;
  • the gateway (301) of the PSTN/ISDN fixed terminal notifies the traditional simulated PSTN/ISDN fixed terminal user (701);
  • the MGCF (205) After receiving the response message sent by the user (801) in the PSTN network, the MGCF (205) sends a final response to the call request to the BGCF (204);
  • the EGCF (200) notifies the gateway (301) of the PSTN/ISDN fixed terminal through the media control protocol that the destination user has answered and returns a call confirmation message to the BGCF (204);
  • the gateway (301) of the PSTN/ISDN fixed terminal notifies the traditional simulated PSTN/ISDN fixed terminal user (701);
  • the BGCF (204) forwards the call confirmation message to the MGCF (205);
  • the user (801) in the PSTN/ISDN network hangs up, and sends an on-hook message to the MGCF (205) via the PSTN network (901);
  • the MGCF (205) releases the resource allocated for the session through the media gateway, and forwards the on-hook request to the BGCF (204);
  • BGCF forwards the on-hook request to the EGCF (200);
  • the EGCF (200) notifies the gateway (301) of the PSTN/ISDN fixed terminal to hang up the request, and returns a response to the BGCF (204);
  • the gateway (301) of the PSTN/ISDN fixed terminal releases the funds allocated for the session.
  • BGCF forwards the response to the MGCF (205).

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne une méthode pour combiner une émulation de réseau commuté/RNIS de terminal classique dans une structure de système IMS et un système implémentant ladite méthode. La présente invention ajoute une fonction de contrôle de passerelle d’émulation (emulating gateway control function, EGCF) dans une structure de système IMS pouvant implémenter un service multimédia utilisateur de terminal 3G. La présente invention ajoute également des terminaux réseau commuté/RNIS classique accédant à une passerelle GW et des équipements classiques de terminal et, par conséquent, peut fournir un accès utilisateur réseau commuté/RNIS classique au sein du système multimédia IP et peut implémenter la fonction d’émulation de réseau commuté/RNIS. La présente invention gère l’accès en fixe et en mobile dans une structure système IMS, implémente la combinaison réseau fixe - réseau mobile et est particulièrement adaptée pour assurer simultanément un service complet fixe et mobile.
PCT/CN2005/000246 2005-02-28 2005-02-28 Méthode pour combiner une émulation de réseau commuté/rnis dans un système ims et système implémentant ladite méthode WO2006089463A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200580048532.1A CN101124812B (zh) 2005-02-28 2005-02-28 Ims体系中融合pstn/isdn仿真的方法及实现该方法的体系
PCT/CN2005/000246 WO2006089463A1 (fr) 2005-02-28 2005-02-28 Méthode pour combiner une émulation de réseau commuté/rnis dans un système ims et système implémentant ladite méthode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2005/000246 WO2006089463A1 (fr) 2005-02-28 2005-02-28 Méthode pour combiner une émulation de réseau commuté/rnis dans un système ims et système implémentant ladite méthode

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WO2006089463A1 true WO2006089463A1 (fr) 2006-08-31

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002032154A2 (fr) * 2000-10-09 2002-04-18 General Bandwidth, Inc. Systeme et procede permettant l'interfaçage entre des protocoles de signalisation
WO2002104057A1 (fr) * 2001-06-18 2002-12-27 Nokia Corporation Itinerance d'un domaine ims au domaine cs
KR100383552B1 (ko) * 2001-05-12 2003-05-12 에스케이 텔레콤주식회사 복수개의 착신 인식자를 가진 차세대 이동 통신망 가입단말기의 착신 방법
CN1428985A (zh) * 2001-11-21 2003-07-09 阿尔卡塔尔公司 对ip多媒体通信会话收费的方法、电信***及网络元件

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002032154A2 (fr) * 2000-10-09 2002-04-18 General Bandwidth, Inc. Systeme et procede permettant l'interfaçage entre des protocoles de signalisation
KR100383552B1 (ko) * 2001-05-12 2003-05-12 에스케이 텔레콤주식회사 복수개의 착신 인식자를 가진 차세대 이동 통신망 가입단말기의 착신 방법
WO2002104057A1 (fr) * 2001-06-18 2002-12-27 Nokia Corporation Itinerance d'un domaine ims au domaine cs
CN1428985A (zh) * 2001-11-21 2003-07-09 阿尔卡塔尔公司 对ip多媒体通信会话收费的方法、电信***及网络元件

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CN101124812A (zh) 2008-02-13

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