User manual

Release 1.01 Digium, Inc. Page 39
Chapter 5
Troubleshooting
This chapter provides frequently asked questions as identified from
Digium Technical Support and possible resolutions. Multiple resources
are available to obtain more information about Asterisk and Digium
products. Please visit both www.digium.com and www.asterisk.org for
more information.
The FXO module never seems to hang-up the line. How do I set it to
hang-up?
Set
busydetect=yes and busycount=10 in the zapata.conf for your
channels. This will cause the line to hang-up by listening for the busy
tone. Upon editing
zapata.conf, you will need to restart Asterisk.
I have echo problems on my FXO modules and I've tried the different
echo cancellation algorithms in zconfig.h, tried tweaking the gains,
and still nothing works. What can I do?
Use the fxotune utility.
To use: Just run the fxotune utility with the -i option (fxotune -i 4). It
should discover which zap channels are FXO modules and tune them
accordingly. Be warned however, it takes a significant amount of time for
EACH module to test, I would say somewhere around 2-3 minutes. But
you only have to initialize it once for the line. It will write a configuration
file to /etc/fxotune.conf. You will need to have your system run fxotune
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