[Asterisk-Users] VoIP hackers gut Caller ID

[Greg Boehnlein]

On Wed, 7 Jul 2004, brian wrote:

> Anyone with a PRI/ISDN line can set callerid to anything... Not just voip,
> not just asterisk.  Come on guys.
> 
> bkw

Yes, but the Telco has the ability to either pass or deny that. In my X/O 
PRI configuration, I can only set the CallerID to a number within the 
vliad block of DIDs assigned to that PRI group. This prevents willy nilly 
abuse.