[Asterisk-Users] How to use multiple VOIP provider trunks

[Tim Pushor]

That only solves one of the failure scenarios, and this one asterisk 
seesm to handle easily on its own.

One problem I was having with my itsp is that I was able to make the SIP 
connection, but the voice connection failed on the back end. As far as * 
was concerned the beep beep beep was a valid call, and didn't fail over.

I am curious to see how others are managing the more difficult types of 
call failures ...

Tim


Andrew Latham wrote:

>You can use an agi program to check the status of each provider before
>connecting.
>
>Ping It.....
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>On Sun, 27 Mar 2005 16:13:42 -0600, Rich Adamson <radamson at routers.com> wrote:
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>>>I have been able to setup three different providers successfully, but only
>>>one at a time. I would like to have all active in a fail over configuration
>>>so that one failing would not be noticed by the users. I know it's probably
>>>easy to configure but I have not been able to find out how. Can anyone give
>>>me an example?
>>>      
>>>
>>It won't be anywhere near as easy as what you might think.
>>
>>Failures might include:
>> - call processed but provider has a problem (incomplete call)
>> - register is working, call processing is not
>> - provider is off-line (for whatever reason; seldom happens)
>> - your local isp is down (or having a problem; all itsp's fail)
>>
>>Asterisk won't know the status of some of these.
>>
>>
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