Hi,
legst Du Dir in Deiner sip.conf einen User an, der ungefaehr so ausschaut:
;-- sip.conf
[Andreas]
call-limit = 4
callerid = "Andreas" <498546456565>
host = dynamic
secret = 1234
type = friend
;-- extensions.conf
exten => 498546456565,1,Dial(SIP/Andreas,30)
Ciao,
-Martin.