[Asterisk-Users] Suppressing CallerID in .call files

[Christian Victor]

Hi!

I am trying to suppres the transmission of my CallerID when I place a 
call using a .call file in /var/spool/asterisk/outgoing

Callerid:
Callerid: "" and
Callerid: '' made the call transmit the default number (headnumber+0)

Callerid: 1234 made the call transmit 1234

Using *31* in front of the called number in Channel: made the call not 
go through.

Does anyone have an idea how to suppress tha CallerID for single calls?

Thanks in advance,

Christian