System information

This would be placed in your /etc/asterisk/chan_dahdi.conf file and would cause
chan_dahdi to create a 96 ms buffer for fax calls and delay start of transmission until
the buffer was half full.
You would also need to set faxdetect, since the fax buffers are part of the faxdetect
functionality:
faxdetect = both
We have not extensively tested this capability yet, but anecdotal evidence suggests that
this should greatly improve the performance of fax pass-through in Asterisk.
Conclusion
Fax is a technology whose days are behind it. Having said that, it remains popular.
Asterisk has some interesting technology built into it that allows you some level of
creativity in how you handle faxes. With careful planning and system design, and a
patient prototyping and debugging phase, you can use your Asterisk system to handle
faxing in creative ways.
Conclusion | 455