Invention Grant
- Patent Title: Access gateway and method of operation by the same
- Patent Title (中): 接入网关和操作方法相同
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Application No.: US12715754Application Date: 2010-03-02
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Publication No.: US08817775B2Publication Date: 2014-08-26
- Inventor: Isamu Hayama
- Applicant: Isamu Hayama
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Katten Muchin Rosenman LLP
- Main IPC: H04L12/66
- IPC: H04L12/66 ; H04M7/00 ; G06F15/173 ; H04L29/06 ; H04L12/56 ; H04L29/14 ; H04M7/12
Abstract:
An access gateway containing IP telephone service functions for subscribers under an integrated access device (IAD), forming a PSTN network side speech path or IP network side speech path selectively for each subscriber, and, further automatically switching, when trouble occurs at the IP network side, the IP network side speech path to the PSTN network side speech path.
Public/Granted literature
- US20100157993A1 ACCESS GATEWAY AND METHOD OF OPERATION BY THE SAME Public/Granted day:2010-06-24
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