Originally Posted by InsCommentary
It's only illegal if fraud is intended. But for what legitimate business purpose is falsifying your phone number on Caller ID? I get calls on our landline all day from telemarketers who use local phone numbers to make us think it's a call from a neighbor, friend, or family member. It may not be fraudulent, but it's clearly unethical in my mind. And, given that I'm on the national Do Not Call list, I would think most of them are illegal.
I would say those are illegal as the intent was deceive, also the business could not be reached at the number displayed which is illegal as they are trying to disguise their identity.
Now, spoofing is a very legitimate business practice. In fact it was devised for legitimate reasons. Large businesses use it all the time. They don't want you calling the individual employee who called you, but into the main switchboard, or to the main customer service number, etc.
Also for an agent who is using a dialer in a legal manner, it is useful as well. The dialer may be set to only allow outbound calls, it may not even have a number. But by pushing a valid number for the agent, the agent is being compliant.