[SR-Users] Kamailio for sip routing architecture

[Daniel-Constantin Mierla]

Hello,

dns naptr is ok for locating servers as long as you control the local
infrastructure and make sure dns changes propagation is done right.

An alternative would be using dispatcher module as a load balancer. It
has a lot of features for this use case, different distribution
algorithms as well as probing the servers (CBx) to see which one is
available.

If the perfomrance is the concern, keeping most of the processing inside
the kamailio is a good choice.

Cheers,
Daniel


On 23/05/16 10:27, Loic Chabert wrote:
> Hello Kamailio users,
>
> I'm working on a sip infrastructure, with opensource technologies, and
> of course Kamailio will run on my new infrastructure :)
>
> Kamailio will be my central routing engine, between SBC (running on
> asterisk), and somes boxes (asterisk too) where customers will be
> registred. Please find below my future infrastructure:
>
>
> ----------                      
> --------------                         --------                     
> ----------------
> | SBC1 | - - - - - | - - - -| kamailio1 |- - - - - | - - - - - | CB1 
> |-----------------| SIPPHONE |
> ----------             |         --------------          
> |             --------                      ----------------
>                          |                                    
> |                                           
> ----------             |                                    
> |             --------                  
> | SBC2 | - - - - - |                                     | - - - - - |
> CB2  |                
> ----------             |                                    
> |             --------
>                          |         --------------           |
> ----------             | - - - -| kamailio2 |- - - - -|           
> --------
> | SBCn |- - - - -  |          --------------          | - - - - - | CBn  |
> ----------             |                                    
> |            --------
>
> Kamailio high availabality will be done with loopback address and BGP
> in two datacenters. SIP carriers will be connected to SBC and customer
> to one CB.
>
> I have made some tests with kamailio, and i use LCR to route call from
> CB to SBC, using wheigt and prorities to send call to carriers.
> Then, when a call arrived from carriers, i use DNS NATPER lookup to
> find the right CB box.
>
> CB HA is done using DNS SRV. So user is registred at one location, and
> only one. No location sharing beetwen boxes.
>
> I have some question concerning my architecture, and technologies used
> to routing call.
> Is LCR is the best option for routing call between multiple carriers ?
> DNS NAPTER is a modern solution to find an endpoint on this
> architecture ? Existing a better way to route call with kamailio, for
> exemple rt-json and curl ?
>
> In my point of view, kamailio should be a routing engine, using
> internal technologies, to maximise performances. Less work with
> kamailio and external app, best performances in sip routing. Is it the
> good vision ?
>
> Thanks in advance.
>
>
>
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-- 
Daniel-Constantin Mierla
http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com

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