asterisk users - Oct 2004 - Rewriting a telephone number for remote dial out

I have * in several locations, one in a foreign country. To optimize on 
the costs I am forwarding calls local for a remote server to the remote 
server instead of dialing out locally. I want to keep it completely 
transparent to the user however. Can the dial command rewrite numbers?

I forward the call to the remote server using IAX2, it will be treated as 
a normal outgoing call there, I guess the rewriting should be done on the 
server placing the call?

Some examples:

Dialled locally		Number that must be dialled remote
0034XXXXXX		9XXXXXXXXX	(-0034 and +9)
ZXXXXXX			078ZXXXXXX	(+078)

Thanks for any input, hope it's possible.

I have some Sayson / Aastra 480e ADSI phones. They work great except for one
annoying feature. It's not really the phone, it's the ADSI programming
feature in Asterisk. I can't figure out how to recreate the factor default
"flash" screen key on the phone. When I create a ADSI script, it loads
to
the phone no problem. However it wipes out all of the factory default keys.
I can't figure out what to put in the script to recreate the flash key. 

Help anyone?

Martin

> Dialled locally		Number that must be dialled remote
> 0034XXXXXX		9XXXXXXXXX	(-0034 and +9)
exten => _0034XXXXXX,1,Dial(CHAN/user@peer/9${EXTEN:4})
> ZXXXXXX			078ZXXXXXX	(+078)
exten => _ZXXXXXX,1,Dial(CHAN/user@peer/078${EXTEN})

Someone needs to go read some more before asking such basic questions.

bkw