asterisk users - Dec 2012 - Recommended T.38 settings for receiving faxes from Cisco AS5350XM

Hi,

What are the recommended T.38 settings for sending/receiving faxes
from Cisco AS5350XM gateways? The chan_sip.conf file has a remark
about what Cisco is doing wrong and says that the values received from
the gateway should be overridden, but doesn't say what settings to use
for maximum success.

Can anyone give me some suggestions? I don't know much about T.38 and
I've been told I have to solve this...

Thanks!

-- 
Andreas