Simultaneous transfer of voice and data information using multi-

Details Simultaneous transfer of voice and data information using multi- Simultaneous transfer of voice and data information using multi-

1996-02-20

1998-05-12

Hsu, Alpus H.

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

370477, 370494, H04J 322

Patent

active

057517185

ABSTRACT:
A technique and method that efficiently and simultaneously transfers both voice and data information over a single communications link (11). The technique and method utilizes a multi-rate vocoder (12) for providing voice information at a plurality of different rates. Accordingly, the vocoder may be dynamically adjusted during transfer of information to meet channel bandwidth requirements. The technique and method also utilizes a byte-control protocol for inserting voice information within a stream of data information by the use of a data link escape (DLE) byte command (34). Accordingly, voice information is dynamically inserted into an existing stream of data information such that voice information is transferred only upon demand and when needed. This prevents the transfer of useless information, such as voice information when a speaker is silent and, thus, allows for very efficient utilization of system bandwidth.

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