vgetty; unexpected byte error

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Hi;

Using 1.1.2 on a Zyxel 1496 (ver 6.17) I get the following error while
trying to 
play a rmd file or do any kind of DTMF detection. DTMF detection works
sometimes but fails at other times with "unexpected byte" error msgs:

03/24 16:54:04 yS1 vgetty: Executing shell script 
/usr/local/etc/mgetty+sendfax/dtmf2.sh with shell /bin/sh
03/24 16:54:04 yS1 playing voice file /var/spool/voice/messages/hello.rmd
03/24 16:54:12 yS1 vgetty: unexpected byte <E> from voice modem
03/24 16:54:12 yS1 vgetty: unexpected byte <N> from voice modem
03/24 16:54:12 yS1 vgetty: unexpected byte <D> from voice modem
03/24 16:54:12 yS1 vgetty: unexpected byte <
03/24 16:54:50 yS1 vgetty: timeout while reading character from voice 
modem: 
Interrupted system call
03/24 16:54:50 yS1 vgetty: Could not handle event, something failed: 
Unknown 
error
03/24 16:54:50 yS1 vgetty: experimental test release 0.7.1 / 20Feb97
03/24 16:54:50 yS1 mgetty: experimental test release 1.1.2-Feb20



03/24 16:55:03 yS1 playing voice file /var/spool/voice/messages/hello.rmd
03/24 16:55:11 yS1 vgetty: unexpected byte <R> from voice modem
03/24 16:55:11 yS1 vgetty: unexpected byte <E> from voice modem
03/24 16:55:11 yS1 vgetty: unexpected byte <A> from voice modem
03/24 16:55:11 yS1 vgetty: unexpected byte <D> from voice modem
03/24 16:55:11 yS1 vgetty: unexpected byte <Y> from voice modem




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