9 Jan
2022
9 Jan
'22
11:48 a.m.
Happy New Year 2022 Everyone. Wish you a lot of innovation this year!
I was just curious to know if any of us had handled the mid-call failures
using the Kamailio. I am writing a SIP Client to handle the failures by
using the DNS SRV based failover and Fallback approach where I am using two
Kamailio instances as Outbound Proxy resolved by DNS SRV lookup. Everything
is fine except for on-going calls. How to handle the mid-call failovers? Is
there any way in Kamailio like Call Preservation mode or something?
Any suggestions or ideas to handle midcall failover so that if a current
Outbound Proxy goes down then all the ongoing calls can be seamlessly
routed through another Kamailio (secondary).
Thanks and Regards
Varun
9 Jan
9 Jan
5:37 p.m.
A question I would carefully consider is:
What exactly needs to be “preserved”?
To be sure, there are some valid answers to that question: transaction state for handling
CANCELs or pending requests, in-dialog variables, etc.
Still, you can kill a Kamailio instance ‘mid-call’ - or even disconnect the proxy server
from the network - without interrupting the call…
— Alex
On Jan 9, 2022, at 5:48 AM, varun pratapsingh
<varunps2003(a)gmail.com> wrote:
Happy New Year 2022 Everyone. Wish you a lot of innovation this year!
I was just curious to know if any of us had handled the mid-call failures using the
Kamailio. I am writing a SIP Client to handle the failures by using the DNS SRV based
failover and Fallback approach where I am using two Kamailio instances as Outbound Proxy
resolved by DNS SRV lookup. Everything is fine except for on-going calls. How to handle
the mid-call failovers? Is there any way in Kamailio like Call Preservation mode or
something?
Any suggestions or ideas to handle midcall failover so that if a current Outbound Proxy
goes down then all the ongoing calls can be seamlessly routed through another Kamailio
(secondary).
Thanks and Regards
Varun
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--
Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
10 Jan
10 Jan
9:05 a.m.
On 9 Jan 2022, at 11:48, varun pratapsingh
<varunps2003(a)gmail.com> wrote:
Happy New Year 2022 Everyone. Wish you a lot of innovation this year!
I was just curious to know if any of us had handled the mid-call failures using the
Kamailio. I am writing a SIP Client to handle the failures by using the DNS SRV based
failover and Fallback approach where I am using two Kamailio instances as Outbound Proxy
resolved by DNS SRV lookup. Everything is fine except for on-going calls. How to handle
the mid-call failovers? Is there any way in Kamailio like Call Preservation mode or
something?
The SIP standards document setting up a call successfully with DNS
support - NAPTR and SRV. But mid-call failover is not specified anywhere. There are some
hints in RFC 3263 on using SRV names in route headers that could be interesting.
/O
Any suggestions or ideas to handle midcall failover so that if a current Outbound Proxy
goes down then all the ongoing calls can be seamlessly routed through another Kamailio
(secondary).
Thanks and Regards
Varun
__________________________________________________________
Kamailio - Users Mailing List - Non Commercial Discussions
* sr-users(a)lists.kamailio.org
Important: keep the mailing list in the recipients, do not reply only to the sender!
Edit mailing list options or unsubscribe:
* https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
847
days inactive
848
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2 comments
3 participants
participants (3)
-
Alex Balashov -
Olle E. Johansson -
varun pratapsingh