Patent ID: 6944280
Filing Date: 2005-09-13
Classification: H04M

Abstract:
1. A gateway system connecting a telephone network utilizing a common channel signaling system No. 7 to an IP (Internet Protocol) network, said gateway system comprising: a media gateway; and a media gateway controller group comprising a plurality of media gateway controllers which are assigned a common point code, wherein each of said media gateway controllers in said media gateway controller group is capable of terminating a No. 7 signal representative of a control signal of the common channel signaling system No. 7 in said telephone network, and wherein each of said media gateway controllers in said media gateway controller group is capable of carrying out call control and connection control to said IP network by controlling said media gateway through said IP network so that a communication path is established between said telephone network and said media gateway, and wherein one of said media gateway controllers in said media gateway controller group transmits signal information with a dummy flag to all others of said media gateway controllers in said media gateway controller group, to thereby provide the signal information to be used to maintain a call by one of said others of said media gateway controllers in a case that said one of said media gateway controllers experiences a failure during the call.