Method of multiplexing speech signal and control signal in ISDN

Details Method of multiplexing speech signal and control signal in ISDN Method of multiplexing speech signal and control signal in ISDN

1992-11-27

1996-11-26

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 60, 370 941, 3701101, 379156, H04Q 1104

Patent

active

055793134

ABSTRACT:
A private branch exchange system having connected thereto a telephone line of a public telephone network, a plurality of extensions, and at least one attendant console. The private branch exchange system has an attendant console control circuit corresponding to each of the attendant consoles in a main frame of the private branch exchange system. A speech signal from a speech path exchange circuit and control signals are multiplexed at the attendant console control circuit to be sent through a transmission line to the corresponding attendant console, and a speech signal and control signals from the attendant console are multiplexed at the attendant console to be sent through a transmission line to the corresponding attendant console control circuit.

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