[asterisk-users] question on SIP and call manager

[Jerry Geis]

Customer has 2 call manager systems and I am using asterisk to place 
calls through the CCM.

One for the main use - CCMMAIN and another for disaster CCMSLAVE.

Can asterisk be setup in such a way that calls first try to use CCMMAIN
and if thats not available use CCMSLAVE.

Example if I place a call file that places a call like Dial: 
SIP/CCMMAIN/5551212
that if CCMMAIN is not available then CCMSLAVE will automatically be used?

My application placing calls in the call file doesnt have any knowledge of
which context to use. CCMMAIN is the only thing my call file nows about.

How do I set up such an arrangement if possible? thanks.

Jerry