Automatic telephone line monitoring and selection apparatus and

Details Automatic telephone line monitoring and selection apparatus and Automatic telephone line monitoring and selection apparatus and

1992-06-11

1995-02-21

Dwyer, James L.

Telephonic communications

Special services

Reserved call

379165, 379214, 379231, 379201, H04M 300

Patent

active

053923413

ABSTRACT:
An automatic telephone line call monitoring and line assignment device is installed at a subscriber location to assign incoming calls on a master ringing line to a user selected slave line in response to taking that line off-hook. A programmable logic unit detects incoming calls, off-hook lines, and directs the device to automatically dial a central office call intercept service to move incoming calls off the master line to the slave lines.

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patent: 5056135 (1991-10-01), Ahn

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