Routing configuration

[bajula]

Hello,

My system is :
*VERSION: 2.9-441a
*BUILD: 140612-1628
*ASTERISK: 1.8.32.1-vici
*loadavg -1-4%
* Server Specs: Server Dell Poweredge 2950 G3 Quad E5450 3ghz ,32gb FBD, 2x1TB. , all in one server with DB, Telephony , web .
I have 2 different carriers , carrier 1: 192.168.0.5 carrier 2: 192.168.0.6 .
All the agents are connecting to the same outbound campaign. I need to split the calls on those two carriers, half of agents should use carrier1 rest of them should use carrier2. What is the best way to do it?