[asterisk-users] Incoming Fax Issue with Asterisk 11.7 and Digium Fax

[Jakob-Matthias Böttger]

Am 03.02.2014 13:20, schrieb Jakob-Matthias Böttger:
> Am 03.02.2014 12:56, schrieb Larry Moore:
>> On 3/02/2014 7:38 PM, Jakob-Matthias Böttger wrote:
>>> as He is describing it he should actually provide t.38. but i don't 
>>> know
>>> why it is not working thus im now getting
>>>
>>> Feb 3 12:32:55] WARNING[9942][C-00000004]: chan_sip.c:10353 
>>> process_sdp:
>>> Failed to initialize UDPTL, declining image stream
>>> [Feb 3 12:32:55] WARNING[9942][C-00000004]: chan_sip.c:10497
>>> process_sdp: Insufficient information in SDP (c=)...
>>> and then the fax session starts recording data
>>>
>>
>> In udptl.conf set use_even_ports=yes and then issue a reload.
>>
>> You can confirm the settings have been applied by performing udptl 
>> show config.
>>
>> Change the the t38 line to read as;
>>
>> t38pt_udptl=yes,redundancy,maxdatagram=400
>>
>> Reload sip and test.
>>
> after that i started udptl debug as well and now i'm getting lots of
>
> UDPTL (SIP/sipcall.ch-00000007): packet to 212.117.203.76:24492 (seq 
> 152, len 11)
>
> and in between
>
> [Feb  3 13:18:30] WARNING[26313][C-00000007]: res_rtp_asterisk.c:3548 
> ast_rtp_read: RTP Read too short
>
> and in the end
>
> [Feb  3 13:18:37] WARNING[9942]: chan_sip.c:4409 __sip_autodestruct: 
> Autodestruct on dialog 
> '24d15e0d-28df847a-9fae13c-7ace at sip.iforb.com~1o' with owner 
> SIP/sipcall.ch-00000007 in place (Method: BYE). Rescheduling 
> destruction for 10000 ms
> [Feb  3 13:18:41] ERROR[26313][C-00000007]: res_fax.c:1535 
> generic_fax_exec: channel 'SIP/sipcall.ch-00000007' FAX session '7' 
> failure, reason: 'fax session timed-out' (TIMEOUT)
>   == Spawn extension (fax-rx, receive, 11) exited non-zero on 
> 'SIP/sipcall.ch-00000007'
>
>
> Thx, Jakob
>
may do i have to open more ports then udp 10000:20000 (RTP), udp 
4000:4999 (UDPTL) and tcp 5060,5061(SIP/TLS)