[SR-Users] Question about using Kamailio and Asterisk and flow of an "INVITE"

Alex Balashov abalashov at evaristesys.com
Sun May 13 15:19:18 CEST 2018

On Sun, May 13, 2018 at 01:14:08PM +0000, Wilkins, Steve wrote:

> In my configuration I have to use Asterisk as my PBX, and I use
> Kamailio in front of Asterisk accepting and inspecting calls.  I have
> many AORs, for which a phone can register to.  I have noticed that,
> depending on the call, when a call arrives it gets REGISTERED in
> Kamailio (I do not forward the registration to Asterisk); Kamailio
> sends the INVITE to Asterisk, and then Asterisk send the INVITE back
> to Kamailio.  The calls seem to work fine (Duplex Audi/Video).  I
> think I know why the INVITE is forwarded to Kamailio but have not been
> able to work around it; the AOR's all have a Contact of Kamailio and I
> think this is the reason for the forwarding of the INVITE.  If I don't
> set Kamailio as the Contact for the AOR's, calls do not work.

Are you sure that you are using the word AOR correctly? 

If you're not forwarding registrations to Asterisk but instead storing
them in Kamailio's registrar, setting the Contact binding of an AOR to
have the address of that very same Kamailio registrar would make no

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/

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