How to auto dial out to external user?

How to auto dial out to external user?
I create .call file as below and copied into /var/spool/asterisk/outgoing
but it does not work…

Channel: DAHDI/g0/9950808123
Callerid: 250
MaxRetries: 5
RetryTime: 300
WaitTime: 45
Extension: s
Priority: 1
AlwaysDelete: yes

what I missed? …

but if I auto dial to internal user … it works properly

Channel: SIP/510
Callerid: 250
MaxRetries: 5
RetryTime: 300
WaitTime: 45
Extension: s
Priority: 1
AlwaysDelete: yes

No, … I have created the trunk …
FYI, the problem has been resolved … (there is no need to prefix 9)

Channel: DAHDI/g0/950808123
Callerid: 250
MaxRetries: 5
RetryTime: 300
WaitTime: 45
Extension: s
Priority: 1

but how to not delete the .call file if it fails although exceeded the MaxRetries

please advise

thanks

Try with ‘AlwaysDelete: no’ and add ‘Archive: yes’