[asterisk-users] asterisk 13.16 / pjsip / t.38: res_pjsip_t38.c:207 t38_automatic_reject: Automatically rejecting T.38 request on channel 'PJSIP/91-00000007'

[Joshua Colp]

On Sun, Jun 4, 2017, at 10:40 AM, Michael Maier wrote:
> On 06/04/2017 at 01:41 PM Telium Technical Support wrote:
> > Just a guess (without knowing about your network), but are the two ends
> > points on public networks and visible to one another?  If not the reinvite
> > may be passing an internal (nat'ed) address to the other and the connection
> > will fail...just a though
> 
> t38modem -tt -o /var/log/t38modem.log --no-h323 -u 91 --sip-listen
> udp\$127.0.0.1:6060 --ptty +/dev/ttyT380,+/dev/ttyT381 --route
> 'modem:.*=sip:<dn>@127.0.0.1:5061' --route 'sip:.*=modem:<dn>'
> --sip-register 91 at 127.0.0.1:5061,password
> 
> I tried it with a global IP (instead of 127.0.0.1) - same behavior.
> 
> The point is, that the receiving part, which initiates the t.38 switch,
> doesn't sent the switch to the ISP. It is blocked / ignored by asterisk
> at all - don't know why it isn't sent to the ISP.

I'd suggest providing the console output and SIP traffic (pjsip set
logger on) so we can see exactly what is going on.

-- 
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org