Invention Grant
US07768997B2 Systems and methods for automatic public switched telephone network backup of voice over internet protocol services
有权
用于互联网语音协议服务的自动公共交换电话网络备份的系统和方法
- Patent Title: Systems and methods for automatic public switched telephone network backup of voice over internet protocol services
- Patent Title (中): 用于互联网语音协议服务的自动公共交换电话网络备份的系统和方法
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Application No.: US10922589Application Date: 2004-08-20
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Publication No.: US07768997B2Publication Date: 2010-08-03
- Inventor: Barbara Roden , John Joe Horton, Jr.
- Applicant: Barbara Roden , John Joe Horton, Jr. , Glenoa R. Horton, legal representative
- Applicant Address: US NV Reno
- Assignee: AT&T Intellectual Property I, L.P.
- Current Assignee: AT&T Intellectual Property I, L.P.
- Current Assignee Address: US NV Reno
- Agency: Myers Bigel Sibley & Sajovec
- Main IPC: H04L12/66
- IPC: H04L12/66
Abstract:
A backup public switched telephone network (PSTN) line is provided to a broadband network connection by detecting unavailability of the broadband network connection and automatically connecting local site wiring to the PSTN line responsive to detecting unavailability of the broadband network connection and disconnecting local site wiring from the PSTN line if unavailability is not detected.
Public/Granted literature
Information query
