On Wed, Oct 6, 2010 at 8:55 AM, Jon Lewis <jle...@lewis.org> wrote: > Some do. Anyone with control of a phone system with digital lines (i.e. > asterisk with PRI) can trivially set callerID to whatever they want. There > are perfectly legitimate, and not so legitimate uses for this. >
You don't even need the PRI. There's a number of SIP providers that will allow you to set CallerID. In some cases they do some level of verification first, but in many cases it's just a free-for-all. There were some laws passed recently which makes "faking" caller-id illegal, although I'm not sure exactly what the details are (eg, I'm fairly sure sending your cell phone number from a desk phone is fine as you own both of them). Scott.
