Invention Grant
US07643618B2 Telephone system and method for reliable emergency services calling
有权
电话系统和可靠的应急服务呼叫方法
- Patent Title: Telephone system and method for reliable emergency services calling
- Patent Title (中): 电话系统和可靠的应急服务呼叫方法
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Application No.: US11427235Application Date: 2006-06-28
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Publication No.: US07643618B2Publication Date: 2010-01-05
- Inventor: Steven L. Lass , John Kenneth Gallant , John L. Truetken
- Applicant: Steven L. Lass , John Kenneth Gallant , John L. Truetken
- Applicant Address: US NJ Basking Ridge
- Assignee: Verizon Business Global LLC
- Current Assignee: Verizon Business Global LLC
- Current Assignee Address: US NJ Basking Ridge
- Main IPC: H04M11/14
- IPC: H04M11/14 ; H04L12/28

Abstract:
A method of routing a telephone call includes receiving an indication, at a handset device 112, to initiate a telephone call. It is then determined, preferably by the handset device 112, whether the telephone call is an emergency services telephone call. If the telephone call is not an emergency services telephone call, it is routed to a proxy server 134. On the other hand, if the telephone call is an emergency services telephone call, it is routed to a local gateway 116 without first accessing the proxy server 134.
Public/Granted literature
- US20070041515A1 TELEPHONE SYSTEM AND METHOD FOR RELIABLE EMERGENCY SERVICES CALLING Public/Granted day:2007-02-22
Information query