Step 1.  Does your provider support T.38?

On Mar 7, 2015, at 5:47 PM, Martin Schöpfer (GMX) <martinschoepfer@gmx.de> wrote:

Hello,
 
can anyone help me by my config for faxing with freeswitch. I have testet al functions of spandsp also to set the software Modems active and receive faxes with hylafax but nothing works.
 
That’s the function I want to get
 
inbound
… Sip-provider à Freeswitch à Cisco SPA3102 Line 1(T.28 enabled) à hp fax or another 
For now i´m getting the message “no fax detected” from my faxing maschine
Outbound
Hp fax or another à Cisco SPA3102 Line 1 à Freeswitch à Sip-provider ….
There I get the message phone busy always ‘I know the other faxing maschine isn busy that’s my second’
 
The softmodem are also always busy I can’t check the function by cu –l FS because it tells me line in use.
 
Freeswitch Version is the latest master branch of 1.4