Internet protocol compliant private branch electronic...

Details Internet protocol compliant private branch electronic... Internet protocol compliant private branch electronic...

2003-04-22

2008-10-21

Kuntz, Curtis (Department: 2614)

Telephonic communications

Plural exchange network or interconnection

With interexchange network routing

C379S015010, C379S198000, C370S352000

Reexamination Certificate

active

07440566

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.

REFERENCES:
patent: 6404746 (2002-06-01), Cave et al.
patent: 6898188 (2005-05-01), Hamami
patent: 7035252 (2006-04-01), Cave et al.
patent: 7254832 (2007-08-01), Christie, IV
patent: 2003/0128696 (2003-07-01), Wengrovitz et al.

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