Load balancing dial plans

[mj1856]

1. Brekeke Product Name and version:
SIP Server 2.0

2. Java version:
Sun JRE 1.6.0_02

3. OS type and the version:
Windows Server 2003

4. UA (phone), gateway or other hardware/software involved:

5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/ ... terns.html :

6. Your problem:

I have two servers providing SIP-based IVR. Each can handle 12 calls. I'm using the Brekeke SIP Server for NAT traversal and to load balance between the two servers.

I see in the dial plan tutorial how to alternate between servers based on time or session ID, but what I'd really like to do is base it on load.

Is there any way to create a dial plan that takes into account the number of ACTIVE sessions? Then I could have every other one alternate.

Also - what happens if I route to a server that is temporarily offline? Will it fall back to the other one, or is there any way to have it check the sip registration before routing the call?