[asterisk-users] Load Balance Trunks

[Steve Edwards]

On Wed, 29 Jun 2011, Abid Saleem wrote:

> I have 100 Trunks from my Provider. My Provider is restricting me to 
> make only 120 minutes Call duration / trunk / day. So I want to load 
> balance my calls to these 100 trunks. Please advise in this regard ASAP. 
> Thanks in advance.

The arrangement sounds 'sketchy' to me :)

You will need to use a database (MySQL, ASTDB, etc) of some sort to keep 
persistent (surviving a crash or restart) track of the usage. You will 
also need some sort of lock mechanism (usually a feature of a 'real' 
database) to prevent race conditions with 
regard to simultaneous calls.

While you can code up database access in dialplan, my personal preference 
is to wrap database code up in an AGI because you have better control, 
robustness and maintainability. Also, database access in dialplan is just 
plain ugly.

Is your intent to 'load balance' between 100 trunks or will you fill up 
one before moving on to the next? Can unused capacity be 'rolled over' to 
the next day?

What happens if you 'go over?' Will the call in flight be terminated? Will 
the next origination fail? Will you get a nasty rate spike?

-- 
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards       sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline                                              Fax: +1-760-731-3000