1993-08-11 - Secure voice software issues

Header Data

From: Eric Blossom <eb@srlr14.sr.hp.com>
To: perobich@ingr.com
Message Hash: d79a687172ef1cbcc39fa623faffd1d5de3b96188ecfefdf4835a259e365d2fb
Message ID: <9308112309.AA07559@srlr14.sr.hp.com>
Reply To: <199308112153.AA04326@poboy.b17c.ingr.com>
UTC Datetime: 1993-08-11 23:12:28 UTC
Raw Date: Wed, 11 Aug 93 16:12:28 PDT

Raw message

From: Eric Blossom <eb@srlr14.sr.hp.com>
Date: Wed, 11 Aug 93 16:12:28 PDT
To: perobich@ingr.com
Subject: Secure voice software issues
In-Reply-To: <199308112153.AA04326@poboy.b17c.ingr.com>
Message-ID: <9308112309.AA07559@srlr14.sr.hp.com>
MIME-Version: 1.0
Content-Type: text/plain



> I do know that ZyXEL's modems are able to do real-time CELP using a
> 68000 processor. The low-end models can do CELP encoding at 9600 baud,
> and the faster ones do better-quality encoding (ACELP, I think they
> call it) at 19200 baud.

I believe that there is a DSP of some kind in there in addition to the 68000.
Also, only their high end modems do CELP.  The regular 14.4/16.8 one doesnt't.

Thread

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• 1993-08-11 (Wed, 11 Aug 93 14:37:23 PDT) - Re: Secure voice software issues - norm@netcom.com (Norman Hardy)
  • 1993-08-11 (Wed, 11 Aug 93 15:02:06 PDT) - Re: Secure voice software issues - paul@poboy.b17c.ingr.com (Paul Robichaux)
    • 1993-08-11 (Wed, 11 Aug 93 16:12:28 PDT) - Secure voice software issues - Eric Blossom <eb@srlr14.sr.hp.com>
  • 1993-08-12 (Thu, 12 Aug 93 01:12:49 PDT) - Re: Secure voice software issues - miron@extropia.wimsey.com (Miron Cuperman)