I configured my 2nd SIP provider as Callcentric (using it for some years now).
On my old Sipura 3000, I just had a very simple rule where it allow me to add 00 automatic, by just selecting the gateway I wanted:
(<#,:00>xx.<:@gw1>|<*,:0>xx.<:@gw2>|xx.<:@gw0>)
FYI, "00" and "011" are the same thing for Callcentric.
Since I'm on Brazil, every call I do with that provider is International, so I need to dial "00" (or "011") everytime, but since there is too many number, I wanted OBi110 do add "00" (or "011") to me, just like I had on Sipura.
So far, I hadn't no luck, can someone help me on rule?
I'm using the default one provided by them:
(*xx.|**275*x.|[3469]11|1xxxxxxxxxx|<1>[2-9]xxxxxxxxx|011xx.|xx.|(Mipd)|[^*#]@@.)
Thanks