SYSTEM AND METHOD FOR PROCESSING PACKET DOMAIN SIGNAL
First Claim
1. A system for processing a packet domain service signal, comprising:
- an Internet Protocol Multimedia Subsystem (IMS);
at least one access gateway function for implementing a function of conversion between a narrowband voice in a circuit domain and an Internet Protocol (IP) media flow in a packet domain, and a function of conversion between user interface signalling in the circuit domain and call control signalling in the packet domain; and
at least one access gateway control function for implementing access management and call control for the access gateway function, and enabling the user equipment which accesses the access gateway control function through the access gateway function to access a Call Session Control Function (CSCF) in the IMS.
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Abstract
Embodiments of the present invention disclose a system and a method for processing a packet domain service signal, which enable a terminal that does not support an access control protocol of an Internet Protocol Multimedia Subsystem (IMS) to access the IMS and acquire the services in the IMS. An AGCF is added for shielding the differences of the users on the basis of the IMS defined in the 3GPP R5/R6 standard, specifically, a PSTN/ISDN user accesses an AGF first, accesses the IMS through an agent function of the AGCF, and the AGCF also manages and controls the AGF. Control of the PSTN/ISDN services may be implemented in the AGCF, or in an AS added to the IMS, or the control of basic services and supplementary services may be implemented in the AGCF while the control of value-added services may be implemented in the AS.
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Citations
19 Claims
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1. A system for processing a packet domain service signal, comprising:
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an Internet Protocol Multimedia Subsystem (IMS);
at least one access gateway function for implementing a function of conversion between a narrowband voice in a circuit domain and an Internet Protocol (IP) media flow in a packet domain, and a function of conversion between user interface signalling in the circuit domain and call control signalling in the packet domain; and
at least one access gateway control function for implementing access management and call control for the access gateway function, and enabling the user equipment which accesses the access gateway control function through the access gateway function to access a Call Session Control Function (CSCF) in the IMS. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for processing a packet domain service signal, when a user makes an outgoing call, the method comprising:
- transferring a first message to an access gateway control function upon receiving a dialling signal from a user equipment processing a service signal of a Public Switched Telephone Network (PSTN)/Integrated Services Digital Network (ISDN);
upon receiving the first message, obtaining, by the access gateway control function, a user identity according to an identity of the access gateway function and a user port identity, converting the first message to an Session Initiation Protocol (SIP) request message, and sending the SIP message to a Call Session Control Function (CSCF) in an Internet Protocol Multimedia Subsystem (IMS);
implementing, by the CSCF, service triggering according to user subscription information, and sending a second message to a first application server;
upon receiving the second message, implementing, by the first application server, service control of the PSTN/ISDN, and notifying the CSCF to continue to implement session control by a third message. - View Dependent Claims (10, 11, 12, 13, 14)
- transferring a first message to an access gateway control function upon receiving a dialling signal from a user equipment processing a service signal of a Public Switched Telephone Network (PSTN)/Integrated Services Digital Network (ISDN);
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15. A method for processing a packet domain service signal, when a user makes an incoming call, the method comprising:
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upon receiving a Session Initiation Protocol (SIP) request message, triggering, by a Call Session Control Function (CSCF) in a home domain of a called user, a service according to user subscription information, and sending a fourth message to a first application server;
upon receiving the fourth message, implementing, by the first application server, service control of a Public Switched Telephone Network (PSTN)/Integrated Services Digital Network (ISDN), and sending a fifth message to the CSCF;
upon receiving the fifth message, implementing, by the CSCF, connection control and routing, and sending a Session Initiation Protocol (SIP) request message to an access gateway control function;
upon receiving the SIP request message, locating, by the access gateway control function, an access gateway function that a called user accesses and a user port according to a called user identity, converting the SIP request message to a sixth message, and notifying the access gateway function to send an incoming call signal to a user equipment processing a service signal of the PSTN/ISDN. - View Dependent Claims (16, 17, 18, 19)
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Specification