公开(公告)号：JP2002010318A

公开(公告)日：2002-01-11

申请号：JP2001128685

申请日：2001-04-26

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CALABRESE ROBERT THOMAS ,  HUDOPOHL EDWARD THOMAS ,  RILEY DOUGLAS HARVEY ,  THOMPSON ROBIN JEFFREY

IPC: H04M3/00 ,  H04M7/00 ,  H04W4/16 ,  H04W8/12 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30

Abstract: PROBLEM TO BE SOLVED: To use a packet network such as an ATM link and the like or a link for providing maintenance of call control for a roaming mobile unit at a gateway mobile switching centre(MSC). SOLUTION: A base station, in addition to specifying a particular address (or channel) referred to as a data link connection identifier(DLCI) on PHV, provides a gateway MSC with a packet address to be used as an address for a voice packet that is received by a roaming mobile unit from the gateway MSC (though a serving MSC), thereby forming a full duplex packet link. The packet link becomes a voice path between the base station and serving MSC and the gateway MSC, and all communications to and from the roaming unit are routed through the gateway MSC. Thereby, the gateway MSC maintains control on all calls about the roaming mobile unit so as to perform enhanced call functions such as call waiting and third party call and the like.