Telephonic communications – Plural exchange network or interconnection – Multi-pbx interconnection
Reexamination Certificate
2005-03-29
2005-03-29
Tsang, Fan (Department: 2642)
Telephonic communications
Plural exchange network or interconnection
Multi-pbx interconnection
C379S266040, C379S265020, C379S211020, C379S212010, C379S221030
Reexamination Certificate
active
06873699
ABSTRACT:
A network linkage type private branch exchange system including a plurality of private branch exchanges, a plurality of telephone network interfaces for relaying data between a plurality of telephone networks and each private branch exchange, a plurality of terminal devices such as an extension for transmitting the data between the respective private branch exchanges and a plurality of operators, a plurality of computers each connected to each private branch exchange for conducting predetermined processing based on the data, and a data communication line to which each private branch exchange is connected, in which each private branch exchange transmits data to a computer connected to an arbitrary private branch exchange other than the private branch exchange in question through the data communication line.
REFERENCES:
patent: 5031211 (1991-07-01), Nagai et al.
patent: 5384841 (1995-01-01), Adams et al.
patent: 5402474 (1995-03-01), Miller et al.
patent: 5455855 (1995-10-01), Hokari
patent: 5526350 (1996-06-01), Gittins et al.
patent: 5715307 (1998-02-01), Zazzera
patent: 5754639 (1998-05-01), Flockhart et al.
patent: 5778058 (1998-07-01), Gavin
patent: 5805692 (1998-09-01), Oerlemans et al.
patent: 5825779 (1998-10-01), Putnins et al.
patent: 5923745 (1999-07-01), Hurd
patent: 6134315 (2000-10-01), Galvin
patent: 6614895 (2003-09-01), Impey et al.
patent: A 4-265054 (1992-09-01), None
patent: 5-7210 (1993-01-01), None
patent: 5-7244 (1993-01-01), None
patent: 06-161859 (1994-06-01), None
patent: A 7-7551 (1995-01-01), None
patent: 09-198293 (1997-07-01), None
patent: 11-249943 (1999-09-01), None
patent: A 11-275618 (1999-10-01), None
NEC Corporation
Sing Simon P.
Tsang Fan
Young & Thompson
LandOfFree
Network linkage type private branch exchange system and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Network linkage type private branch exchange system and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Network linkage type private branch exchange system and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3390641