Still trouble with voice recording

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Hi Bjoern!

> Anybody know what I'm doing wrong? I am including, as I said, my
> policy.h, as well as mgetty.config and an excerpt from the (alas, _very_
> verbose) logfile.

Yes. Thanks for mailing all relevant information at once. This makes
it easy to reply. :-)

> 11/15 23:09:32 dem  voice_command: send 'AT+VSM=3 +VLS=2 +VSD=12,70'

The +VSD command sets the threshold and duration for the detection of
silence. Both parameters can be set in the voice/vconfig.h file.
The meaning of the parameters is also documented there.

> 11/15 23:09:32 dem  voice_record: receiving /var/spool/voice/incoming/voc-a01740
> ....
> 11/15 23:09:40 dem  input: got <DLE>s
> 
> [What's this?]

The modem has detected a period of silence. As you can see this code
comes 8 seconds after the start. The configured value for this is 7
seconds (it's the 70 in the +VSD command, because it's in units of
10th of seconds), so everything is ok so far. 

> 11/15 23:09:40 dem  Trying fax/data connection...

Since this was silence at the beginning of the recording vgetty
assumes, there is a quite modem on the line waiting for a connect, so
it switches to data mode.

> 11/15 23:10:18 dem  found action string: `NO CARRIER''
> 11/15 23:10:18 ##### failed A_FAIL dev=modem, pid=1740, caller=none, conn='', na

Which fails...

So what you want to do is to change the value for the silence
threshold (sensitivity). Since this value varies from the quality of
the phone line and the connection, there is no absolute secure
standard value. Try changing this one and it should solve your
problem. More details are documented in the vconfig.h file.

Bye,
Marc

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