http://wiki.freeswitch.org/wiki/Loopback

There are issues with t.38 according to wiki, although I haven't tested T.38 on loopback  by myself.

See also http://wiki.freeswitch.org/wiki/Variable_loopback_bowout_on_execute
There was a thread few month ago in mailing list where Anthony explained things about loopback channels.


2012/12/13 Royce Mitchell III <royce3@gmail.com>
I'm trying to avoid duplication of logic. I have a dial plan setup
with two sets of gateways, one set is a route to a pair of adtrans
connecting to the customer downstream telephony system, the other set
of gateways is another pair of adtrans leading to the PSTN. I have all
this setup and working in the dial plan. I would like to do something
like this: originate 8005551212 XML default &txfax(foo), but I can't
figure it out. Is there a way I could, say, generate a one-leg txfax,
then transfer to the destination?

Royce Mitchell
IT Consultant
ITAS Solutions
royce3@itas-solutions.com

_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

FreeSWITCH-powered IP PBX: The CudaTel Communication Server
http://www.cudatel.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://wiki.freeswitch.org
http://www.cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org



--
Best regards,

Dmitry Sytchev,
IT Engineer