[asterisk-users] Asterisk and spandsp fax problem

[sean darcy]

Fulajtár Pál wrote:
> Hi,
> 
>   I am recently updated my asterisk 1.4.1 to 1.6.2.6 because of fax
> service. I have installed spandsp 0.0.5, then 0.0.6 pre 17 as well
> because to have support. app_fax is available in menuselect and loaded
> into my asterisk. The upgrade went without any problems.
> 
> ast*CLI> module show like fax
> Module                         Description                             
> Use Count
> app_fax.so                     Simple FAX Application                   0
> 1 modules loaded
> ast*CLI>
> 
> 
> But I cannot use Zoiper Business SIP fax service with, I always get
> error message regardless I want to send fax to a PSTN or I want to
> ending it locally on Asterisk.
> 
> [Apr  2 15:45:57] WARNING[5026]: chan_sip.c:8702 process_sdp_c: Unable
> to lookup RTP Audio host in c= line, 'IN IP4 8000'
> [Apr  2 15:45:57] WARNING[5026]: chan_sip.c:8369 process_sdp:
> Insufficient information in SDP (c=)...
> 
> 
> Dou you have any suggestion what could cause this problem. All of other
> communications, SIP, IAX, PSTN (via TDM400P) works fine
> 
> 
> Any suggestions are welcome!
> 
> 
> Pal
> 
> 
What's your receive and send fax context?