Option bus

Details Option bus Option bus

1995-05-15

1997-05-20

Matar, Ahmad F.

Telephonic communications

Substation or terminal circuitry

Conversion of signal form

379441, 379396, H04M 100

Patent

active

056319550

ABSTRACT:
A method and apparatus for connecting remote options to a digital telephone base. Physical and communications protocols for connections and a flexible control scheme which can be as simple or elaborate as a given option requires are provided. The digital telephone includes an option bay connection, having a hierarchical control protocol. The option bay connection makes available several types of information, including: local analog audio, analog voice, digital voice, digital data and telephone control streams.

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"Computer Networks", Andrew S. Tanenbaum 1989 Prentice-Hall Inc. pp. 110-111.

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