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
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@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 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions
- sr-users@lists.kamailio.org
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On 9 Jan 2022, at 11:48, varun pratapsingh varunps2003@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@lists.kamailio.org
Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:
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Alex Balashov -
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varun pratapsingh