Invention Grant
- Patent Title: Method for improved handling of emergency calls in a roaming scenario, telecommunications network, program and computer program product
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Application No.: US15555514Application Date: 2016-03-23
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Publication No.: US10382931B2Publication Date: 2019-08-13
- Inventor: Reinhard Lauster
- Applicant: Deutsche Telekom AG
- Applicant Address: DE Bonn
- Assignee: DEUTSCHE TELEKOM AG
- Current Assignee: DEUTSCHE TELEKOM AG
- Current Assignee Address: DE Bonn
- Agency: Leydig, Voit & Mayer, LTD.
- Priority: EP15161141 20150326
- International Application: PCT/EP2016/056342 WO 20160323
- International Announcement: WO2016/150998 WO 20160929
- Main IPC: H04L12/66
- IPC: H04L12/66 ; H04W4/90 ; H04W76/50 ; H04W76/12 ; H04L12/46 ; H04L29/06 ; H04W8/02 ; H04W36/14 ; H04W48/18 ; H04W92/02

Abstract:
A method for handling of emergency calls in a roaming scenario includes: initiating, by a user equipment, a voice call using a specific emergency call telephone number, wherein the specific emergency call telephone number is a valid emergency call telephone number in a visited telecommunications network, and wherein the voice call is initiated via transmitting a first message comprising the specific emergency call telephone number to a second network node of a home telecommunications network; initially handling, by the user equipment, the voice call as a normal voice call; detecting the specific emergency call telephone number as being a valid emergency call telephone number within the visited telecommunications network in relation to the voice call; and generating, by the home telecommunications network, a second message, the second message being transmitted to the user equipment, the second message comprising an indication, to the user equipment, to trigger an emergency call procedure.
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