Paul Belanger
2005-Jul-11 10:54 UTC
[Asterisk-Users] Some refer transfer questions / issues!
Hello,
I think there maybe an issue with my refer transfers. See below or attached:
No. Time Source Destination Protocol Info
1 0.000000 192.168.1.2 192.168.1.5 SIP/SDP
Request: INVITE sip:2718389@192.168.1.5, with session
description
2 0.027008 192.168.1.5 192.168.1.2 SIP Status:
180 Ringing
3 0.140889 192.168.1.5 192.168.1.2 SIP/SDP Status:
200 OK, with session description
4 0.141303 192.168.1.2 192.168.1.5 SIP
Request: ACK sip:2718389@192.168.1.5
5 19.690281 192.168.1.5 192.168.1.2 SIP
Request: REFER sip:6132550048@192.168.1.2
6 19.690602 192.168.1.2 192.168.1.5 SIP Status:
202 Accepted
7 19.690691 192.168.1.2 192.168.1.5 SIP/sipfrag
Request: NOTIFY sip:192.168.1.5, with Sipfrag(SIP/2.0
200 OK)
8 19.690722 192.168.1.2 192.168.1.5 SIP
Request: BYE sip:192.168.1.5
9 19.691225 192.168.1.5 192.168.1.2 SIP Status:
200 OK
10 20.699733 192.168.1.2 192.168.1.5 SIP/sipfrag
Request: NOTIFY sip:192.168.1.5, with Sipfrag(SIP/2.0
200 OK)
11 20.700083 192.168.1.5 192.168.1.2 SIP Status:
481 Call Leg/Transaction Does Not Exist
As you can see Asterisk excepts the REFER, Status: 202 Accepted is returned.
However believe the NOTIFY is incorrect. If I
understand RFC 3515 correctly, the NOTIFIY should respone with 100 Trying, not
200 OK. See http://rfc.arogo.net/rfc3515.html section
4.1 Prototypical REFER callflow.
Am I correct, or out in left field?
PB
-------------- next part --------------
No. Time Source Destination Protocol Info
1 0.000000 192.168.1.2 192.168.1.5 SIP/SDP
Request: INVITE sip:2718389@192.168.1.5, with session description
2 0.027008 192.168.1.5 192.168.1.2 SIP Status:
180 Ringing
3 0.140889 192.168.1.5 192.168.1.2 SIP/SDP Status:
200 OK, with session description
4 0.141303 192.168.1.2 192.168.1.5 SIP
Request: ACK sip:2718389@192.168.1.5
5 19.690281 192.168.1.5 192.168.1.2 SIP
Request: REFER sip:6132550048@192.168.1.2
6 19.690602 192.168.1.2 192.168.1.5 SIP Status:
202 Accepted
7 19.690691 192.168.1.2 192.168.1.5 SIP/sipfrag
Request: NOTIFY sip:192.168.1.5, with Sipfrag(SIP/2.0 200 OK)
8 19.690722 192.168.1.2 192.168.1.5 SIP
Request: BYE sip:192.168.1.5
9 19.691225 192.168.1.5 192.168.1.2 SIP Status:
200 OK
10 20.699733 192.168.1.2 192.168.1.5 SIP/sipfrag
Request: NOTIFY sip:192.168.1.5, with Sipfrag(SIP/2.0 200 OK)
11 20.700083 192.168.1.5 192.168.1.2 SIP Status:
481 Call Leg/Transaction Does Not Exist