Communication terminal apparatus

Details Communication terminal apparatus Communication terminal apparatus

1994-09-08

1995-05-23

Dwyer, James L.

Telephonic communications

Plural exchange network or interconnection

Connection call model

379387, 370 60, H04M 700

Patent

active

054188474

ABSTRACT:
A communication terminal apparatus has an interface structure of nB+D (n.gtoreq.2, B: channel for transfer of user information, D: channel for transfer of control information) and is connected to a digital line network. A reception refusal for m (n.gtoreq.m) of the n user information transfer channels is registered. When the reception refusal has already been registered, the reception of the user information transfer channels of (n-m+1) or more is refused. Thus, inconvenience from all of the lines being in use for call reception and a new call generation cannot be performed, is prevented.

REFERENCES:
patent: 4611322 (1986-09-01), Larson et al.
patent: 4862496 (1989-08-01), Kelly et al.
patent: 4885686 (1989-12-01), Vanderbei
patent: 4939752 (1990-07-01), Literati et al.
patent: 4975946 (1990-12-01), Bovo et al.
patent: 5095480 (1992-03-01), Fenner

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