[Asterisk-Users] SIP URI... d'oh!

[asterisk at lists.styx.org]

Hmmm... As it turns out, the regexp matching and replacement
/is/ implemented correctly in asterisk... It just required
an escaped backslash (\\) in the zone file. So all works 
correctly on that front.

However the question remains, for the purposes of generic
Dial commands that want to insert ${EXTEN}, how do we do it
in a a way that doesn't require what protocol is being used?

-w