Telephone set for an integrated services digital network (ISDN)

Details Telephone set for an integrated services digital network (ISDN) Telephone set for an integrated services digital network (ISDN)

1995-03-21

1997-02-04

Kuntz, Curtis

Telephonic communications

Audio message storage, retrieval, or synthesis

370524, H04M 1100

Patent

active

056007094

ABSTRACT:
A digital-line telephone unit having two sets combined in one housing with partially shared circuitry. The unit connects directly to an integrated services digital network (ISDN) and includes both a handset with connection cord and a cordless set. A single digital line terminating unit, a main circuit for the corded telephone, and an auxiliary circuit for the cordless phone are connected to an internal digital bus. The main circuit and auxiliary circuit each contain a respective speech processor. Transmission from the corded handset and the cordless handset can occur simultaneously over different message channels of the ISDN.

REFERENCES:
patent: 4682351 (1987-07-01), Makino
patent: 4782518 (1988-11-01), Mattley et al.
patent: 5023869 (1991-06-01), Grover et al.
patent: 5040177 (1991-08-01), Martin et al.
ISDN (PKI Tech. Mitt. 1988) vol. 1, pp. 19-22.
PATSY (PKI Tech. Mitt. 1988) vol. 2, pp. 7-14.
ISDN (PKI Tech. Mitt. 1987) vol. 1, pp. 13-18.

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