Telephone station equipment employing rewriteable display keys

Details Telephone station equipment employing rewriteable display keys Telephone station equipment employing rewriteable display keys

1997-02-14

1999-06-29

Chiang, Jack

Telephonic communications

Supervisory or control line signaling

Substation originated

379368, 379387, 379 9317, 379 9305, H04M 100

Patent

active

059179058

ABSTRACT:
A telephone instrument with a 12-key keypad that has relegendable buttons. The telephone instrument is coupled to apparatus such as a personal computer, network server, or switch that is capable of performing telephony functions. The telephony apparatus responds to an input from the keypad by providing a new set of legends for the keys and/or performing a telephone function. In a preferred embodiment, the telephone instrument is connected both to a personal computer and to a POTS telephone circuit and includes a separate keypad for the POTS telephone circuit. The apparatus includes a component which detects a failure in the personal computer and automatically deactivates the keypad with the relegendable buttons, leaving the telephone instrument still available for use with the POTS circuit. Also disclosed are a reduced-cost implementation of the telephone instrument and alternative embodiments in which the telephone instrument is connected to the telephony apparatus by a packet interface or itself contains the component which performs the telephony functions. The telephony functions may be those employed in switched circuit telephone systems or those employed in packet telephone systems, and the systems themselves may be either wired or wireless.

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