Hello,
I'm need some help with SIP protocol / SER configuration to resolve a
problem.
I have a system with a SER instance and a SIP client application running
on the same box.
SER is 10.50.32.10:5060
APP is 10.50.32.10:5070
Remote SIP server 10.1.39.10
Remote phone is 10.1.39.202
The user agent is registered with the SER instance as extension 1009. It
has aliases 1001-1008 and is actually called as 231x which maps onto
100x which then connects to extension 1009.
The remote phone makes a call to the user agent application via the
remote SIP server and the SER instance. It dials 2311 which gets
automagically converted to extension 1009
The call is established but the user application times out and detects a
disconnect despite the calling phone not hanging up. In my wireshark
trace it seems that SER is ignoring some form of keep-alive from the
remote SIP server and this is causing the timeout. The lines of interest
include 39, 42, 45, 50, 53, 56, 59
Lines 28 and others similar are on the loopback interface and are
packets between port 5060 and 5070
Can someone please advise if the SIP protocol has problems and/or if SER
configuration has problems?
22 0.218826 10.50.32.10 -> 127.0.0.1 SIP Request: REGISTER
sip:localhost.localdomain
23 0.219570 127.0.0.1 -> 10.50.32.10 SIP Status: 200 OK (1
bindings)
24 19.472555 10.1.39.10 -> 10.50.32.10 SIP/SDP Request: INVITE
sip:1001@butler.fesa.sto;transport=udp, with session description
25 19.473394 10.50.32.10 -> 10.1.39.10 SIP Status: 100 trying --
your call is important to us
26 19.473596 10.50.32.10 -> 10.50.32.10 SIP/SDP Request: INVITE
sip:1009@10.50.32.10:5070;LINEID=1d5a67e38809, with session description
27 19.484244 10.50.32.10 -> 10.50.32.10 SIP Status: 100 Trying
28 19.725476 10.50.32.10 -> 10.50.32.10 SIP Status: 180 Ringing
29 19.725828 10.50.32.10 -> 10.1.39.10 SIP Status: 180 Ringing
32 21.770798 10.50.32.10 -> 10.50.32.10 SIP/SDP Status: 200 OK, with
session description
33 21.782437 10.50.32.10 -> 10.1.39.10 SIP/SDP Status: 200 OK, with
session description
38 21.789396 10.50.32.10 -> 10.1.39.202 RTCP Source port: 8001
Destination port: 16391
39 21.800069 10.1.39.10 -> 10.50.32.10 SIP Request: ACK
sip:2311@10.50.32.10:5070;LINEID=1d5a67e38809
40 22.278096 10.50.32.10 -> 10.50.32.10 SIP/SDP Status: 200 OK, with
session description
41 22.278713 10.50.32.10 -> 10.1.39.10 SIP/SDP Status: 200 OK, with
session description
42 22.298101 10.1.39.10 -> 10.50.32.10 SIP Request: ACK
sip:2311@10.50.32.10:5070;LINEID=1d5a67e38809
43 23.285536 10.50.32.10 -> 10.50.32.10 SIP/SDP Status: 200 OK, with
session description
44 23.288988 10.50.32.10 -> 10.1.39.10 SIP/SDP Status: 200 OK, with
session description
45 23.307839 10.1.39.10 -> 10.50.32.10 SIP Request: ACK
sip:2311@10.50.32.10:5070;LINEID=1d5a67e38809
48 25.298214 10.50.32.10 -> 10.50.32.10 SIP/SDP Status: 200 OK, with
session description
49 25.299105 10.50.32.10 -> 10.1.39.10 SIP/SDP Status: 200 OK, with
session description
50 25.317892 10.1.39.10 -> 10.50.32.10 SIP Request: ACK
sip:2311@10.50.32.10:5070;LINEID=1d5a67e38809
51 29.306496 10.50.32.10 -> 10.50.32.10 SIP/SDP Status: 200 OK, with
session description
52 29.306758 10.50.32.10 -> 10.1.39.10 SIP/SDP Status: 200 OK, with
session description
53 29.328420 10.1.39.10 -> 10.50.32.10 SIP Request: ACK
sip:2311@10.50.32.10:5070;LINEID=1d5a67e38809
54 33.314736 10.50.32.10 -> 10.50.32.10 SIP/SDP Status: 200 OK, with
session description
55 33.318736 10.50.32.10 -> 10.1.39.10 SIP/SDP Status: 200 OK, with
session description
56 33.338302 10.1.39.10 -> 10.50.32.10 SIP Request: ACK
sip:2311@10.50.32.10:5070;LINEID=1d5a67e38809
57 37.323175 10.50.32.10 -> 10.50.32.10 SIP/SDP Status: 200 OK, with
session description
58 37.324791 10.50.32.10 -> 10.1.39.10 SIP/SDP Status: 200 OK, with
session description
59 37.347936 10.1.39.10 -> 10.50.32.10 SIP Request: ACK
sip:2311@10.50.32.10:5070;LINEID=1d5a67e38809
--> client detects disconnect here
Thanks
jeremy
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