Method for providing caller interrupt in a time division multipl

Details Method for providing caller interrupt in a time division multipl Method for providing caller interrupt in a time division multipl

1994-09-30

1995-10-31

Hsu, Alpus

Multiplex communications

Wide area network

Packet switching

370 62, 370 951, 3701101, 34082547, 379 63, 379208, 455 342, 455 381, 455 542, 455 581, H04B 714

Patent

active

054636175

ABSTRACT:
A first communication unit (101) transmits, to a central controller (105), a request for a group call. The central controller allocates a first inbound (11), a second inbound (12), and an outbound (O.sub.1) wireless communication resource for use in the group call. At the central controller, primary voice signals from the first communication unit, received via the first inbound wireless communication resource, are summed (109) with interrupt voice signals from a second communication unit (102), received via the second inbound wireless communication resource, to produce summed voice signals. The summed voice signals and a busy signal (108) are transmitted via the outbound wireless communication resource, thereby allowing the second communication unit to interrupt the group call. Additionally, the central controller can allocate a third inbound communication resource (13) for use with priority interrupt voice signals which can also be summed with the primary and interrupt voice signals.

REFERENCES:
patent: 4754450 (1988-06-01), Lynk, Jr. et al.
patent: 4942570 (1990-07-01), Kotzin et al.
patent: 5117501 (1992-05-01), Childress et al.
patent: 5249304 (1993-09-01), Mulford
patent: 5274837 (1993-12-01), Childress et al.
patent: 5274842 (1993-12-01), Sasuta
patent: 5363428 (1994-11-01), Nagashima

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