Daryl Sanders wrote:
> I'd love to use uac_replace_to(), but to my knowledge it does not
> exist. I read through the UAC module docs and there is no mention of
> it.
> 
> Any other posibilities?
> 
> If I were to use subst(), can it be applied it in such a way that it
> does not cause problems with the dialog?

You have to catch everys reply and remove the + sign.

Further you have to check all in-dialog requests received from the PSTN 
provider and remove the + sign to, and catch every reply from the user's 
client to add the + sign again.