[Asterisk-Users] outgoing prefix dial plan

[Rich Adamson]

> I have my Asterisk (two analog lines into a TDM400P) except cannot get out.
> Centrex from Verizon was on the lines (must dial 9 to get out) is there a way
> to get a pause using the outgoing prefix under trunks? Calls in and extensions
> work fine - just getting out yields an error from Verizon each time something
> is called (trying to prefix with 9 and without) Is there a special set of dial
> plan rules or prefixes needed?

Yes, insert a "w" in the dial string. Each "w" adds additional delay.
Like:
 exten => _9XXXXXXX,1,Dial(Zap/4/ww${EXTEN}) 

Its a fairly common problem, particularily in central office switches
that are old, and on some newer ones that might be under engineered.