So the fone thing has come-about lately..but better late than never

I have an AT&T now Avaya Merlin Legend with Legend Mail

Line 1: a Plan Old telephone Line from Bellsouth
Line 2: VoIP from Vonage with free long distance
Line 3: VoIP "fax" line from Vonage
Line 4: Cellsocket cellphone to POTS adaptor. to help use up those night and weekend mins.
Hold Music: NOAA NWS National Weather Service Radio on 162.55 MHz it is free, legal, informative, and annoying to the telemarketers {grin}

I found out that this is error msg is from the ATT prepaid calling cards

Caller ID spoofing is the manipulation of the caller ID info sent to a call recipiant.
To accompish this you must have a PRI (Primary Rate Interface) $$$ very expinsive for home use.
This can now be done very easy with Asterisk@home or Asterisk and using an outbound provider like Voxee or others.
Of course the backend at the outbound provider is still a PRI and they are changing the CID based on your settings.
The photos below show how a person can make it appear they are calling from the White House Switchboard.

Crashed Windows based payphone in London