Path: utzoo!telecom-request
Date: Wed, 10 Apr 1991 20:42:40 GMT
From: Monty Andro <monty@blackhole.lerc.nasa.gov>
Newsgroups: comp.dcom.telecom
Subject: Seeking 9600/4800/2400 Voice CODEC's
Reply-To: Monty Andro <monty@blackhole.lerc.nasa.gov>
Message-ID: <telecom11.283.8@eecs.nwu.edu>
Organization: NASA Lewis Research Center
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X-Telecom-Digest: Volume 11, Issue 283, Message 8 of 8
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Ideally I need voice codec hardware that can compress/decompress voice
down to selectable rates of 9600,4800 and 2400 bits/sec.  This can be
implemented in integrated circuits, circuit boards, or a single unit
(a single commercial unit would be best).  Does anybody know if such a
unit or combination of boards and/or chips exist?  Are there units
that can come close to my requirement?  Maybe one unit can't do all
three desired rates, but there may be three single units for each rate.

If such a single unit or multiple units exist, can they support OPX
(Off Premise Exchange) and SLT (Single Line Telephone) type interfaces?
(I'm assuming OPX and SLT are valid interfaces.)

Any information that can help me identify integrated circuits or
actual commercially available hardware (now or in the near future)
will be greatly appreciated.

Thanks in advance.

Monty