7 Oct
2005
7 Oct
'05
8:44 a.m.
Micheline,
Sipura has plenty of parameters that can be tweaked, but the standard should
work. ACK should be loose routed if the Route header is present, but maybe
your GW hasn't record routed, its a UAS in a call from the PSTN. Thus you
should also make sure that if its not, it will be looked up as INVITEs.
g-)
----- Original Message -----
From: "Lambert, Micheline (Satnet)" <Lambert.M(a)emssatnet.com>
To: <serusers(a)lists.iptel.org>
Sent: Thursday, October 06, 2005 04:13 PM
Subject: [Serusers] ACK loop in SER - Route missing problem ?
Hi,
I'm using SER with Sipura and VoIP GW.
When there is no line available from the VoIP GW, the VoIP GW replies with
486 Busy Here.
The Sipura receives this message and sends an ACK.
The ACK has the IP addr. Of the SER. If it is ok, the ACK does not include
the "Route" parameter, is it a problem from the Sipura?
This cause the SIP to loop the ACK because there is no Route and with the
following code, the packet becomes too big!!!
............
if (!method=="REGISTER") record_route();
# ------------------------------------------------------------------
# Loose Route Section
# ------------------------------------------------------------------
# subsequent messages withing a dialog should take the
# path determined by record-routing
if (loose_route()) {
append_hf("P-hint: rr-enforced\r\n");
t_relay();
break;
};
......................
Same configuration and same trace
192.168.20.155 is the SIP Proxy
192.168.20.105 is the VoIP GW
192.168.20.90 is the Sipura
312 54.858597 192.168.20.90 192.168.20.155 SIP/SDP
Request: INVITE sip:3353@192.168.20.155, with session description
313 54.860243 192.168.20.155 192.168.20.90 SIP
Status: 407 Proxy Authentication Required
314 54.877006 192.168.20.90 192.168.20.155 SIP
Request: ACK sip:3353@192.168.20.155
315 54.886801 192.168.20.90 192.168.20.155 SIP/SDP
Request: INVITE sip:3353@192.168.20.155, with session description
316 54.889720 192.168.20.155 192.168.20.105 SIP/SDP
Request: INVITE sip:3353@192.168.20.105:5060, with session description
318 54.924666 192.168.20.105 192.168.20.155 SIP
Status: 100 Trying
319 54.925866 192.168.20.155 192.168.20.90 SIP
Status: 100 Trying
320 54.950257 192.168.20.105 192.168.20.155 SIP
Status: 486 Busy Here
321 54.951442 192.168.20.155 192.168.20.90 SIP
Status: 486 Busy Here
323 54.968942 192.168.20.90 192.168.20.155 SIP
Request: ACK sip:3353@192.168.20.155
440 55.527290 192.168.20.105 192.168.20.155 SIP
Status: 486 Busy Here
441 55.528528 192.168.20.155 192.168.20.90 SIP
Status: 486 Busy Here
442 55.547237 192.168.20.90 192.168.20.155 SIP
Request: ACK sip:3353@192.168.20.155
627 56.624649 192.168.20.105 192.168.20.155 SIP
Status: 486 Busy Here
639 56.626924 192.168.20.155 192.168.20.90 SIP
Status: 486 Busy Here
649 56.647321 192.168.20.90 192.168.20.155 SIP
Request: ACK sip:3353@192.168.20.155
912 58.719683 192.168.20.105 192.168.20.155 SIP
Status: 486 Busy Here
913 58.720967 192.168.20.155 192.168.20.90 SIP
Status: 486 Busy Here
916 58.746851 192.168.20.90 192.168.20.155 SIP
Request: ACK sip:3353@192.168.20.155
1192 62.806510 192.168.20.105 192.168.20.155 SIP
Status: 486 Busy Here
1193 62.807741 192.168.20.155 192.168.20.90 SIP
Status: 486 Busy Here
1194 62.827148 192.168.20.90 192.168.20.155 SIP
Request: ACK sip:3353@192.168.20.155
1417 66.892115 192.168.20.105 192.168.20.155 SIP
Status: 486 Busy Here
1418 66.893350 192.168.20.155 192.168.20.90 SIP
Status: 486 Busy Here
1419 66.907704 192.168.20.90 192.168.20.155 SIP
Request: ACK sip:3353@192.168.20.155
1628 68.143481 192.168.20.101 192.168.20.55 SIP
Thanks.
Micheline
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