[asterisk-users] Asterisk seding 2 INVITEs all of a sudden

[Nick Cameo]

Hello Everyone,

Today we observed asterisk sending two invites for the initial call before
the call was established (ie, not re-invites). There were no changes made
to the configuration for a very long time, and was kind of confused when
seeing this action. Can someone please suggest where to look to remove
this behaviour?

U 2014/08/12 07:34:20.405029 192.168.2.10:5060 -> 192.168.2.20:5080
INVITE sip:873359633037 at 192.168.2.20:5080 SIP/2.0.
Via: SIP/2.0/UDP 192.168.2.10:5060;branch=z9hG4bK541d5594;rport.
Max-Forwards: 70.
From: "555955599" <sip:555955599 at victoria.example.com>;tag=as285d2896.
To: <sip:873359633037 at 192.168.2.20:5080>.
Contact: <sip:555955599 at 192.168.2.10:5060>.
Call-ID: 5a51eef8064a0d360009f64e34c7007a at victoria.example.com.
CSeq: 102 INVITE.
User-Agent: EXAMPLE Systems.
Date: Tue, 12 Aug 2014 11:34:20 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY,
INFO, PUBLISH.
Supported: replaces, timer.
Content-Type: application/sdp.
Content-Length: 279.
.
v=0.
o=root 1631923320 1631923320 IN IP4 192.168.2.10.
s=EXAMPLE Systems.
c=IN IP4 192.168.2.10.
t=0 0.
m=audio 52034 RTP/AVP 18 101.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.


U 2014/08/12 07:34:20.903830 192.168.2.10:5060 -> 192.168.2.20:5080
INVITE sip:873359633037 at 192.168.2.20:5080 SIP/2.0.
Via: SIP/2.0/UDP 192.168.2.10:5060;branch=z9hG4bK541d5594;rport.
Max-Forwards: 70.
From: "555955599" <sip:555955599 at victoria.example.com>;tag=as285d2896.
To: <sip:873359633037 at 192.168.2.20:5080>.
Contact: <sip:555955599 at 192.168.2.10:5060>.
Call-ID: 5a51eef8064a0d360009f64e34c7007a at victoria.example.com.
CSeq: 102 INVITE.
User-Agent: EXAMPLE Systems.
Date: Tue, 12 Aug 2014 11:34:20 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY,
INFO, PUBLISH.
Supported: replaces, timer.
Content-Type: application/sdp.
Content-Length: 279.
.
v=0.
o=root 1631923320 1631923320 IN IP4 192.168.2.10.
s=EXAMPLE Systems.
c=IN IP4 192.168.2.10.
t=0 0.
m=audio 52034 RTP/AVP 18 101.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

Thanks in Advance,

Nick