[asterisk-users] activate telco redirection service from Asterisk

[Giorgio Incantalupo]

Hi,
I want my telco to redirect all the incoming calls to my Asterisk 
towards another number XXXX (connected to my old Panasonic PBX) so I can 
stop Asterisk and repair my office. I tried to send the code *#21# ( 
Dial(mISDN/1/*#21#) ) but I get a busy channel while it is working with 
an ISDN phone.
How can I do this with Asterisk?

Thank you!

Giorgio.