[OpenSIPS-Users] Call continuity

[Alex Balashov]

On Thu, Jul 20, 2017 at 08:07:28PM +0000, Abdirahman A. Osman wrote:

> Is it possible to keep a live call continue , if the internet
> connection fails and route it through another internet connection ?
> Does SIP protocol support this kind of Call continuity?

Generally speaking, no, though the answer will vary with the modalities
of the failover mechanism.

But in general, failing anything over to another Internet connection
means changing the address of one of the endpoints involved. All
session-based Internet applications, whether using a
connection-orientated transport or not, presume that the IP and port
endpoints on both ends stay the same. 

So, if you suddenly start sending media from another place and expecting
to receive it there likewise, that will not be considered to be part of
the same phone call.

-- Alex

-- 
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/