Method and apparatus for providing backup telecommunication...

Details Method and apparatus for providing backup telecommunication... Method and apparatus for providing backup telecommunication...

2005-08-02

2005-08-02

Marcelo, Melvin (Department: 2662)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C379S029050

Reexamination Certificate

active

06925053

ABSTRACT:
A technique for providing telecommunications service is disclosed that uses a test bus to test customer subscriber lines and to provide a connection between a customer subscriber line and transmission equipment, which handles outbound backup calls. This backup transmission equipment can be inexpensively retrofitted into switches and remote terminal equipment in the field. The illustrative embodiment of the present invention comprises: a plurality of customer subscriber lines; a metallic test bus that can be electrically connected to any of the plurality of customer subscriber lines; drop test logic for testing at least one electrical characteristic of any of the plurality of customer subscriber lines via the metallic test bus; and transmission equipment for providing telecommunications service to any of the plurality of customer subscriber lines via the metallic test bus.

REFERENCES:
patent: 5418776 (1995-05-01), Purkey et al.
patent: 5636202 (1997-06-01), Garney et al.
patent: 5680391 (1997-10-01), Barron et al.
patent: 5920609 (1999-07-01), Toumani et al.
patent: 6282266 (2001-08-01), Przyblyski et al.
patent: WO 9966700 (1999-12-01), None

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