US 9,001,715 B2 · Apparatus and method for gateway and program

Abstract

A gateway apparatus arranged between the mobile circuit switched network and the mobile IMS network, includes a call control unit which converts a control signal output from the mobile circuit switched network into at least one of SIP and SDP to output a signal converted to the mobile IMS network and a conversion unit which receives a line switching protocol for an audio signal output from the mobile circuit switched network. The conversion unit decides, using at least one of SIP and SDP, output from the mobile IMS network and received by the call control unit, on whether the partner terminal is to be connected via the mobile IMS network to the mobile circuit switched network, via the mobile IMS network to a fixed network or via the mobile IMS network to a mobile broadband network, then converts the line switching protocol to one of different protocol, depending on a result of the decision, and outputs the protocol converted signal to the mobile IMS network (FIG. 2).

Claims14

Dependent claims

A gateway apparatus arranged between a mobile circuit switched network and a mobile IMS (IP Multimedia Subsystem) network, the apparatus comprising:

a call control unit that converts a control signal received from the mobile circuit switched network and outputs a signal converted to the mobile IMS network;
and
a conversion unit that checks a plurality of types of a network to perform protocol conversion of a line switching protocol for an audio signal received from a communication terminal on the mobile circuit switched network side, and makes a decision on a type of a network beyond the mobile IMS network from among the plurality of types, or on a type of a partner terminal which is a connection target, using control information output from the mobile IMS network and received by the call control unit, and that performs, based on a result of the decision, protocol conversion of the line switching protocol for the audio signal received from the communication terminal on the mobile circuit switched network side and outputs a protocol converted signal to the mobile IMS network.

A gateway method in a gateway apparatus arranged between a mobile circuit switched network and a mobile IMS (IP Multimedia Subsystem) network, the method comprising:

converting a control signal from the mobile circuit switched network to output a signal converted to the mobile IMS network;
checking a plurality of types of a network to perform protocol conversion of a line switching protocol for an audio signal received from a communication terminal on the mobile circuit switched network side and making decision on a network beyond the mobile IMS network from among the plurality of types or on a type of a partner terminal, which is a connection target, using control information received from the mobile IMS network, and
converting the line switching protocol for the audio signal received from the communication terminal on the mobile circuit switched network side to a different protocol, depending on a result of the decision and outputting a protocol converted signal to the mobile IMS network.

A non-transitory computer-readable recording medium storing a program that causes a gateway apparatus, arranged between a mobile circuit switched network and a mobile IMS (IP Multimedia Subsystem) network, to execute the processing comprising:

converting a control signal received from the mobile circuit switched network and outputting a signal converted to the mobile IMS network;
checking a plurality of types of a network to perform protocol conversion of a line switching protocol for an audio signal received from a communication terminal on the mobile circuit switched network side and making a decision on a type of a network connected beyond the mobile IMS network from among the plurality of types or on a type of a partner terminal which is a connection target, using control information received from the mobile IMS network;
and
converting the line switching protocol for the audio signal received from the communication terminal on the mobile circuit switched network side into a different protocol, based on a result of the decision and outputting a protocol converted to the mobile IMS network.

1 more element

Dependencies are inferred from the claim text.

Apparatus and method for gateway and program

Life of this patent

Apparatus and method for gateway and program

Life of this patent

Abstract

Claims14