Apparatus and method for providing other service in IP multimedia subsystem (IMS)

A method for providing other services in an Internet Protocol (IP) Multimedia Subsystem (IMS), the method comprising:

• establishing a connection between a service interworking apparatus and an IMS terminal connected to the service interworking apparatus through an IMS network;
• establishing a connection between the service interworking apparatus and a Voice over IP (VoIP) service network;
• receiving, by the service interworking apparatus, a registration request message from the IMS terminal;
• upon receipt of the registration request message, performing, by the service interworking apparatus, a registration to verify IMS authentication for the IMS terminal;
• mapping, by the service interworking apparatus, access information for the other VoIP services and information of the IMS terminal;
• logging on, by the service interworking apparatus, for the other VoIP services using the access information;
• converting, by the service interworking apparatus, information received from the VoIP service network to information supportable by the IMS terminal and transmitting the converted information to the IMS terminal to interwork the IMS terminal and other VoIP services not supported by the IMS terminal;
• and
• converting, by the service interworking apparatus, information received from the IMS terminal to information supportable by the VoIP service network and transmitting the converted information to the VoIP service network.

A method for providing other services in an Internet Protocol (IP) Multimedia Subsystem (IMS) for enabling communication between a Voice over IP (VoIP) service network and an IMS terminal connected to a service interworking apparatus through an IMS network, the method comprising:

• generating, by an IMS terminal, a registration request message for registering the IMS terminal with a service interworking apparatus;
• transmitting, by the IMS terminal, the generated request message to the service interworking apparatus through a Proxy-Call Session Control Function (P-CSCF);
• receiving, by the IMS terminal, a signal, which is indicating information reconstructed to the signal for the IMS terminal so as to allow the IMS terminal not supporting the VoIP service network to acquire the information of the VoIP service network, from the service interworking apparatus through P-CSCF;
• and
• connecting, by the IMS terminal, the VoIP service network,
• wherein the service interworking apparatus is configured to receive the registration request message from the IMS terminal, upon receipt of the registration request message, to perform a registration to verify IMS authentication for the IMS terminal, to map access information for the other VoIP services and information of the IMS terminal, to log on for the other VoIP services using the access information, to receive service information, and to generate the converted information by converting the received service information to the signal.