Telephone line device

Details Telephone line device Telephone line device

1996-08-12

1999-03-09

Loomis, Paul

Telephonic communications

Polystation line system

379158, 379 67, H04M 1300, H04M 100

Patent

active

058811435

ABSTRACT:
A programmable telephone line device (10) for selectively interconnecting two or more telephone lines between a plurality of communication instruments is disclosed. The device (10) includes an assignment matrix (24) for inter-connecting the telephone lines with the communication instruments and a control assembly (26) for automatically or manually directing the assignment matrix (24) to transfer a communication instrument from its primary telephone line to a roll-over telephone line if its primary telephone line is in use.

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patent: 5530951 (1996-06-01), Argintar
patent: 5590185 (1996-12-01), Sandler et al.
patent: 5596631 (1997-01-01), Chen

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