DNIC peripheral extender

Details DNIC peripheral extender DNIC peripheral extender

2000-05-12

2003-09-30

Matar, Ahmad F. (Department: 2642)

Telephonic communications

Plural exchange network or interconnection

Multi-pbx interconnection

C379S230000

Reexamination Certificate

active

06628776

ABSTRACT:

FIELD OF THE INVENTION
This invention relates in general to digital telephony, and more particularly to a method and apparatus for extending digital telephone set functionality at a remote office under remote control of a central PBX (Private Branch Exchange).
BACKGROUND OF THE INVENTION
The ability to extend digital telephone set capabilities to remote offices at a reasonable cost, has been recognized as being highly desirable in the telecommunications industry. Normally, in order to provide such capabilities, a PBX networking solution is required which involves the purchasing of multiple expensive PBXs.
SUMMARY OF THE INVENTION
According to the present invention, a method and apparatus is provided for extending digital set functionality to a remote peripheral under local control of a centralized PBX, using analog or digital trunks, thereby obviating the need to purchase additional PBXs for the remote office.


REFERENCES:
patent: 5612990 (1997-03-01), Meier et al.
patent: 5911123 (1999-06-01), Shaffer et al.
patent: 0857004 (1998-08-01), None
patent: 0909079 (1999-04-01), None
patent: 9718662 (1997-05-01), None

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