Invention Grant
- Patent Title: Internet protocol compliant private branch electronic exchange and a method for redundantly configuring terminal interfaces
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Application No.: US12132225Application Date: 2008-06-03
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Publication No.: US08462767B2Publication Date: 2013-06-11
- Inventor: Mao Masuhiro , Yasuhiro Watanabe
- Applicant: Mao Masuhiro , Yasuhiro Watanabe
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Young & Thompson
- Priority: JP2002-123345 20020425
- Main IPC: H04L12/66
- IPC: H04L12/66 ; H04L12/16 ; H04L12/28 ; H04L12/56 ; H04Q11/00
Abstract:
The IP-PBX includes a multimedia gateway controller in which a call control data master table stores call control data for all terminals falling under the control of the IP-PBX. In the event of failure of a PH accommodating IP phones and the like via the LAN, the multimedia gateway controller transfers the contents of the call control data slave table existing on the PH to the call control data slave table on another PH.
Public/Granted literature
Information query
