voice: Zyxel 1496 E+, problems with welcome-message

Gert Doering (gert@greenie.muc.de)
Tue, 27 Jul 1999 22:55:52 +0200


Hi,

On Tue, Jul 27, 1999 at 10:39:24PM +0200, Michael Witschke wrote:
> Btw, why is pvftormd offering 2,3 and 4 bit ADPCM, but only 2 bit works?

AFAIR, this is a version issue.  Most (if not all) ZyXEL 1496 releases
can do 2- and 3-bit ADPCM, and only the latest releases can do 4-bit.

Also, it could be a baud rate problem.  For 9600/ADPCM-4, you need to run
the serial port at more than 38400 bps, otherwise you'll drop samples.

gert
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Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de