asterisk users - Oct 2009 - question on SIP and call manager

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

Here are two ways to address this

1. Dial(SIP/CCMMAIN&SIP/CCMSLAVE) - this tries both at once

2. exten => s,1,Dial(SIP/CCMMAIN,10,KkTt)
   Exten => s,n,Dial(SIP/CCMSLAVE,10,KkTt)

CCMSLAVE only gets called if no one answers CCMMAIN in 10 seconds (2-3
rings)

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Jerry Geis
Sent: Thursday, October 15, 2009 4:21 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] question on SIP and call manager

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

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>
> Here are two ways to address this
>
> 1. Dial(SIP/CCMMAIN&SIP/CCMSLAVE) - this tries both at once
>
> 2. exten => s,1,Dial(SIP/CCMMAIN,10,KkTt)
>    Exten => s,n,Dial(SIP/CCMSLAVE,10,KkTt)
>
> CCMSLAVE only gets called if no one answers CCMMAIN in 10 seconds (2-3
> rings)
>
>   
Danny thats good to know for extensions.conf
but
I am using call files.

echo "Channel: SIP/CCMMAIN/5551212" >  /tmp/call
echo "Context: smvoice-test" >> /tmp/call

Can I do the Channel: SIP/CCMMAIN/5551212&SIP/CCMSLAVE/5551212
in the Channel for the call file?


Jerry