Program-controlled communication system whereby a call request i

Details Program-controlled communication system whereby a call request i Program-controlled communication system whereby a call request i

1996-01-11

1996-09-17

Treat, William M.

Telephonic communications

Special services

Call waiting

379211, 379212, 379201, 370 62, H04M 342

Patent

active

055576605

ABSTRACT:
Program-controlled communication system, whereby a call request is simultaneously signaled at a plurality of communication terminal equipment. The call request that is addressed to a specific terminal equipment (KE-D) is simultaneously signaled at at least one further terminal equipment (KE-C). These terminal equipment preferably belong to a group of terminal equipment integrated in the communication system which have key functions. When the call is accepted by a terminal equipment (KE-C), then, after the set up of a connection to the other terminal equipment, a connection can be automatically set up between this terminal equipment and the originally calling terminal equipment (KE-A) by actuating a special key (ST). Simultaneously, the call set up between the two first-cited terminal equipment is cleared down. This through-connect of the call to the calling terminal equipment (KE-A) is possible in the same way when this terminal equipment in turn had placed a further terminal equipment (KE-B) with which it previously had a call connection into the hold status. Since, for the connection between the allocated terminal equipment, a call register independent of the other connections is written and read, these call registers must accept information that refer to at most three terminal equipment. Despite the possible participation of a total of four terminal equipment, no involved procedures for the administration of the entries need be provided due to changing switching-oriented statuses for the terminal equipment. Function executions are possible whose ultimate result corresponds to that of a second consultation.

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patent: 5206901 (1993-04-01), Harlow et al.
patent: 5315646 (1994-05-01), Babson, III et al.
patent: 5365582 (1994-11-01), Yamada et al.
patent: 5432846 (1995-07-01), Norio
patent: 5461666 (1995-10-01), McMahan et al.

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