[asterisk-bugs] [JIRA] (ASTERISK-26992) Bell Canada Interop on Asterisk 13.15 fails due to no RTP on SDP sendrecv

[David Brillert (JIRA)]

David Brillert created ASTERISK-26992:
-----------------------------------------

             Summary: Bell Canada Interop on Asterisk 13.15 fails due to no RTP on SDP sendrecv
                 Key: ASTERISK-26992
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26992
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/General
    Affects Versions: 13.15.0
         Environment: Asterisk 13.15, CentOS6 x64
            Reporter: David Brillert


I have been working to complete Bell Canada interop testing with Bell Canada and Asterisk 13.15 but the interop does not pass due to outgoing call setup failure.  When using 11.25 the test case does not fail.  Since 11.25 is no longer maintained I am trying to complete the interop with *13
I ran tests and pcaps using both versions to diagnose where the RTP is failing.
Because the 183 session in progress message SDP has sendrecv Bell expects RTP from Asterisk.
The passed test case is using Asterisk 11.25 and Asterisk is sending RTP in response to sendrecv. In the Asterisk 13.15 failure Asterisk does not send RTP after the sendrecv.
Two traces are attached:
1. Asterisk 11.25 'pass with rtp.pcapng' where RTP is established after the sendrecv and the call completes OK.
2. Asterisk 13.15 'fail with rtp.pcapng' where RTP is not established after the sendrecv and the call fails.

I have tried multiple setting in sip.conf including progressinband=yes and no and never without any improvement.

sip.conf
{no format}
transport       =  udp
icesupport      =  no
nat             =  no
directmedia     =  yes
insecure        =  port,invite
disallowed_methods =  UPDATE
session-timers  =  accept
session-expires =  1800
session-minse   =  90
session-refresher =  uac
encryption      =  no
qualify         =  yes
qualifyfreq     =  60
disallow        =  all
allow           =  ulaw
{noformat}





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