[Kamailio-Users] Newbie questions

[Alex Balashov]

On 12/28/2009 11:57 AM, Antonio Goméz Soto wrote:

> thank you for your thorough answers.

You're welcome!

> I have noticed that some phones only accept SIP NOTIFY from the registrar
> server, and some request authentication, and accept them from the same
> port that the register replies came from, or use SIP transaction numbers.
>
> This would make it mandatory for the register server to send them.

In principle, yes.

> I am not at all trying to compare asterisk to kamailio, just trying to find
> out what each is intended to do, in words and concepts that are familiar to
> me.

In that case, I invite you to think of Kamailio as a "call router."

> So this means, that if I put kamailio as a frontend to my current asterisk
> setup, and most calls run outside asterisk, that the operator will not be
> able to for example break into an already existing conversation?

If they run outside of Asterisk in both the signaling and media 
respects, that is correct.

> Or pull two established channels away from each other and forcibly redirect
> them to a conference box?

Correct.

> Will the asterisk queue app be able to work with phones that are
> registered to kamailio?

Yes.  You can use Kamailio as a location server to contact all phones 
from Asterisk.  Instead of addressing them as local peers (e.g. 
Dial(SIP/antonio)), you'd just plumb the network/transport-layer 
reachability information resolution through the registrar (e.g. 
Dial(SIP/antonio at kamailio_server)).

-- Alex

-- 
Alex Balashov - Principal
Evariste Systems
Web     : http://www.evaristesys.com/
Tel     : (+1) (678) 954-0670
Direct  : (+1) (678) 954-0671