Invention Grant
US07301934B1 UMTS telecommunications system for enabling a mobile station to receive voice-over internet protocol calls when roaming
失效
UMTS电信系统，用于使移动台在漫游时能够接收语音互联网协议呼叫
- Patent Title: UMTS telecommunications system for enabling a mobile station to receive voice-over internet protocol calls when roaming
- Patent Title (中): UMTS电信系统，用于使移动台在漫游时能够接收语音互联网协议呼叫
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Application No.: US10030387Application Date: 2000-04-18
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Publication No.: US07301934B1Publication Date: 2007-11-27
- Inventor: Alessio Casati , Sudeep Kumar Palat , Hatef Yamini , Jin Yang
- Applicant: Alessio Casati , Sudeep Kumar Palat , Hatef Yamini , Jin Yang
- Applicant Address: US NJ Murray Hill
- Assignee: Lucent Technologies Inc.
- Current Assignee: Lucent Technologies Inc.
- Current Assignee Address: US NJ Murray Hill
- Priority: EP99305778 19990721
- International Application: PCT/GB00/01481 WO 20000418
- International Announcement: WO01/06744 WO 20010125
- Main IPC: H04L12/66
- IPC: H04L12/66
Abstract:
A telecommunication system including a mobile station, and means for a mobile station to receive voice-over Internet Protocol (VoIP) calls when it is roaming away from a home network, comprising: means for informing a serving GGSN of the International Mobile subscriber Identity (IMSI) of the called mobile station, and means for enabling a local VoIP control server to map a called MSISDN number to the IMSI number.
Information query
