[SR-Users] Kamailio Load Balancer Architecture

I am interested in opinions and suggestions about load balancing with Kamailio. I work for an ITSP that currently uses Oracle & Broadsoft, and I am working to design and develop an open source solution using Kamailio (Proxy, Registrar, LB) & other Application/Media servers for more flexibility and freedom :) Thank you ALL for the work you have put in on Kamailio! After much reading and configuration I have a Kamailio 'proxy' setup, with endpoints registered using the Registrar module, and calls being sent/received to/from the PSTN. I am interested in separating the Load Balancers from the Registrars & logic, for security and in order to be able to scale appropriately. I will be using the dispatcher module for both load balancers and proxies using the following architecture: PublicIP = 5.5.5.5; Private IP = 192.168.1.0/24 USERS (Public Internet) ==> (public: 5.5.5.5) [ Kamailio (LoadBalancer, Firewall, Sanity Checks) ] (core:192.168.1.2) ==> [ Kamailio Registrar, Proxy, PSTN GW ] ==> AppServers or PSTN GW (we can access our PSTN gateways Via our Core using Private IPs) Questions: 1) Is it overkill to separate the LB & Proxy/Registrars? 2) Is this a common architecture & anyone configured this architecture successfully? Thanks in advance for your help! *Daryn Johnson* *Senior VoIP Engineer*