[asterisk-users] Dial out through multiple Zap groups

[Noah Miller]

Hi Vieri -

> I'm trying to set a rule to dial out through multiple
> Zap groups so that, say, g0 is the cheaper POTS lines
> group
> and must be used first. However, if g0 is busy or
> disconnected then try dialing out g1.
>
> My g0 group is made up of 4 analog lines connected to
> a 4-FXO card. I disconnected the RJ-11 wires from the
> FXO card
> to simulate a line disconnection. So theoretically all
> calls should immediately go out through g1 but they
> don't.
> They get "stuck" on g0 as I can see in the asterisk

You've discovered a big limitation in analog lines.  If this were a
PRI or BRI, the lines would behave as you want, but analog lines
won't.

You can try using ChanIsAvail() to test beforehand if the zap channels
will accept a call.  I don't know if it will work in this fashion
(I've never tried).


- Noah