Invention Grant
- Patent Title: Emergency call back method
- Patent Title (中): 紧急回拨方式
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Application No.: US10270629Application Date: 2002-10-16
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Publication No.: US07676215B2Publication Date: 2010-03-09
- Inventor: Mary Chin , Douglas Rollender
- Applicant: Mary Chin , Douglas Rollender
- Applicant Address: US NJ Murray Hill
- Assignee: Alcatel Lucent USA Inc.
- Current Assignee: Alcatel Lucent USA Inc.
- Current Assignee Address: US NJ Murray Hill
- Agency: Harness, Dickey & Pierce
- Main IPC: H04M11/00
- IPC: H04M11/00

Abstract:
An emergency routing number is assigned to each switch in a wireless network. When a switch of the wireless network routes an emergency call to a Public Service Answering Point (PSAP), the switch sends the emergency routing number as the calling party number and provides the PSAP with the identifier of the mobile station. If the emergency call drops, the PSAP performs a call back using the emergency routing number as the called party number. The switch that routed the emergency call from the mobile station to the PSAP receives the call back. The PSAP also sends the identifier of the mobile station to the switch. When a switch receives its emergency routing number as the called party number, the switch recognizes an emergency call back situation and pages the mobile station identified by the mobile station identifier received in association with the emergency routing number. The mobile station is then reconnected with the PSAP.
Public/Granted literature
- US20040203565A1 Emergency call back method Public/Granted day:2004-10-14
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