Hello,
I'm a new Freeswitch user. After some reading I put Freeswitch (Version 1.0.4)
to work as Session Border Controller. I have only one problem that I dont know
how to solve it ( or which parameter to set) and I'd appreciate if someone
could give me a clue about this.
Kamailio is sitting behind FS and it selects the route or routes in case of
failure (serial forking) . Freeswitch is configured to use directly the
Request-URI sent by Kamailio.
So, when the 1st route fails, Kamailio receives the Reply from FS and sends
back the ACK to end the transaction. More than 1 second later, a new INVITE
from Kamailio with the next route is tried (With the To-header's tag is empty.
Same Callid, From and Cseq header but different VIA-header's branch parameter)
and FS is answering back 482 Merged Request. It happens the same for the 3rd
route.
It seems that the transaction is still 'alive' in FS even if the ACK was
received ?
Thanks,
Humberto
===1st route===
U 2009/09/03 17:20:36.069147 kamailio -> freeswitch
INVITE sip:5145555...@gw1 SIP/2.0.
Via: SIP/2.0/UDP kamailio;branch=z9hG4bKa0fa.0cd8784.0
Call-ID: 1
U 2009/09/03 17:20:36.169147 freeswitch -> gw1
INVITE sip:5145555...@gw1 SIP/2.0.
Call-ID: 2
U 2009/09/03 17:20:36.170158 gw1 -> freeswitch
SIP/2.0 100 Trying.
Call-ID: 2
U 2009/09/03 17:20:36.190457 gw1 -> freeswitch
SIP/2.0 503 Service Unavailable.
Call-ID: 2
U 2009/09/03 17:20:36.193296 freeswitch -> gw1
ACK sip:5142776...@gw1 SIP/2.0.
Call-ID: 2
U 2009/09/03 17:20:36.227492 freeswitch -> kamailio
SIP/2.0 503 Service Unavailable.
Via: SIP/2.0/UDP kamailio;branch=z9hG4bKa0fa.0cd8784.0
Call-ID: 1
U 2009/09/03 17:20:36.228122 kamailio -> freeswitch
ACK sip:5145555...@gw1 SIP/2.0.
Via: SIP/2.0/UDP kamailio;branch=z9hG4bKa0fa.0cd8784.0
Call-ID: 1
===2nd route===
U 2009/09/03 17:20:37.596885 kamailio -> freeswitch
INVITE sip:15145555...@gw2:5061 SIP/2.0
Via: SIP/2.0/UDP kamailio;branch=z9hG4bKa0fa.0cd8784.1
Call-ID: 1
U 2009/09/03 17:20:37.597590 freeswitch -> kamailio
SIP/2.0 482 Request merged.
Via: SIP/2.0/UDP kamailio;branch=z9hG4bKa0fa.0cd8784.1
Call-ID: 1
U 2009/09/03 17:20:37.598163 kamailio -> freeswitch
ACK sip:15145555...@gw2:5061 SIP/2.0.
Via: SIP/2.0/UDP kamailio;branch=z9hG4bKa0fa.0cd8784.1
Call-ID: 1
===3rd route===
U 2009/09/03 17:20:37.642098 kamailio -> freeswitch
INVITE sip:5145555...@gw3 SIP/2.0
Via: SIP/2.0/UDP kamailio;branch=z9hG4bKa0fa.0cd8784.2
Call-ID: 1
U 2009/09/03 17:20:37.642634 freeswitch -> kamailio
SIP/2.0 482 Request merged.
Via: SIP/2.0/UDP kamailio;branch=z9hG4bKa0fa.0cd8784.2
Call-ID: 1
U 2009/09/03 17:20:37.643139 kamailio -> freeswitch
ACK sip:5145555...@gw3 SIP/2.0.
Via: SIP/2.0/UDP kamailio;branch=z9hG4bKa0fa.0cd8784.2
Call-ID: 1
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