[SR-Users] (no subject)

Nelson Migliaro eng.migliaro at gmail.com
Fri Jun 26 13:05:03 CEST 2015


Hello everybody,

My SIP vendor request me to replace FROM before sending the traffic. In
order to achieve this I use uac_replace_from.

UAC module is setup in restore_mode = auto.

In my insfrastructure I have an Asterisk and then a Kamailio that connects
to vendor via internet.

Softphone -> Asterisk -> Kamailio -> Internet -> SIP vendor

If caller ID is setup in Asterisk using CALLERID(num)=34888888888 and then
INVITE is forwarded to Kamailio, the call is established and finished
correctly but the URI in TO field in BYE request from Kamailio to Asterisk
contains garbage. In the scenario the callee hangs up the call.

Example of TO Field with garbage: 34888888888 <sip:50026896 at no{soy,ns^^>

What I do see is that the number "50026896" that is part of the URI is the
same I use in:
uac_replace_from("50026896", "sip:50026896 at sip.vendor.es");

Something else that I have found is that vsf field is the same in the
INVITE and in the BYE.

----------------------------------------------------------------------------------------------------------------
2015/06/23 17:48:38.552442 192.168.0.2:5060 -> 192.168.0.1:5060
BYE sip:34888888888 at 192.168.0.1:5060 SIP/2.0
Via: SIP/2.0/UDP
192.168.0.2;branch=z9hG4bKfb49.73c6517609cdb6f7ec00b1f40a05dbe9.0
Via: SIP/2.0/UDP
8.8.8.8.8;rport=5060;branch=z9hG4bKfcdf.3767c59c2d0e3d8ab695669845ce4cea.0
branch=z9hG4bK04boo6104o5hcso0c2a1sd0000g00.1
Call-ID: 4bf8effb45b0ae8e049366297924cbba at 192.168.0.1:5060
From: <sip:28999999999 at 192.168.0.2;tag=k0eci3x3-CC-30
To: 34888888888 <sip:50026896 at no{soy,ns^^>;tag=as041b7d84
CSeq: 1 BYE
Reason: Q.850;cause=16;text="normal call clearing"
Max-Forwards: 67
Content-Length: 0

------------------------------------------------------------------------------------------------------------------
DEBUG: uac [replace.c:525]: restore_uri(): getting 'vsf' Route param
DEBUG: uac [replace.c:533]: restore_uri(): route param is
'AAAAAAEECQkCAgsNAXBeL0NGQUsfVl02Ni44Mw--' (len=40)
DEBUG: uac [replace.c:607]: restore_uri(): decoded uris are:
new=[sip:50026896 at no{soy,ns#005#007] old=[sip:34888888888 at 8.8.8.8]
DEBUG: uac [replace.c:525]: restore_uri(): getting 'vst' Route param
DEBUG: uac [replace.c:533]: restore_uri(): route param is
'AAAAAAQPAw8MDgsAAHZBKRVdAhoVHQ4XH1BdYWJhbnRlLmVz' (len=48)
DEBUG: uac [replace.c:607]: restore_uri(): decoded uris are: new=[
sip:28999999999 at 192.168.0.1] old=[sip:999999999 at sip.vendor.es]
-----------------------------------------------------------------------------------------------------------------------------------
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