[asterisk-users] Dealing with 2 SIP providers

[Yuan LIU]

>From: Mike <list at virtutel.ca>
>Date: Fri, 11 May 2007 11:06:35 -0400
>
>Hi,
>
>I have a question of using 2 SIP providers.  Let's say I have provider A 
>and
>provider B, and I would like my calls to go to A, and then B if A wasn`t
>available
>
>Something like this would work:
>exten => 1234,1,Dial(SIP/providerA)
>exten => 1234,2,Dial(providerB)
>exten => 1234,3,Hangup
>
>But what if I want to put in a delay? If I put 30 seconds on each of them,
>I'll wait a total of 60.  I want to wait only 30 seconds before the hang 
>up.

Like put 15 seconds on each?  It's quite hard to understand what exactly the 
requirements are.

Yuan Liu

>Also, if ProviderA has a main server and a backup server, am I now forced 
>to
>have 3 Dial commands, or can I setup ProviderA with host and backuphost in
>the same SIP entry?
>
>Mike