Redirect or Transfer to extern with Caller id


I have a little Problem.
When i redirect a call from my Snom300 over the Asterisk to a Mobile Phone, i sea my own number and not the caller id.
The services Clip no Screening is activatet from my Provider “Sipcall”.
The Code in Extensions.conf:

roger-telefon] exten => 2002,1,Dial(SIP/2002,60) exten => 2002,n,Set(CALLERID(name) =41${CALLERID(num):1}) exten => 2002,n,Dial(SIP/2002@roger-sip-account,30) exten => _0X.,1,Dial(SIP/${EXTEN}@roger-sip-account) include=>internal [internal] exten => _XXXX,1,Dial(SIP/${EXTEN})
This code wont work. And i need it for national not only for swiss (“41”)
How can i do this, can you help me please :smile:

A responsible ITSP will not allow you to forward third party caller ID unless you have proved to them that you control the line to which that number applies .

If you have a dodgy ITSP, you will need to tell us how you perform the transfers and what your connected line update settings are.