Method and system for calling traditional circuit switched domain network user by packet core network
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United States of America Patent
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Jun 24, 2014
Grant Date -
Dec 27, 2012
app pub date -
Nov 24, 2010
filing date -
Jul 23, 2010
priority date (Note) -
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Abstract
A method and a system for calling a traditional circuit switched domain network user by a packet core network. The method includes: after receiving a request message from a call session control unit, a media gateway control unit sends the call session control unit a first call progress message carrying a preset prompt tone indicating please wait; the media gateway control unit sends an initial address message to the traditional circuit switched domain network and start a preset timer; if the timer expires and the traditional circuit switched domain network does not respond, the media gateway control unit sends the call session control unit a second call progress message carrying a preset prompt tone indicating that the other party is temporarily unaccessible, and the media gateway control unit proceeds according to a preset policy. Resource waste due to waiting is avoided and better user friendliness of a service is provided.
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