Phishing: It's not just for email anymore

I just got a phishing telephone call at my office. I'm used to telemarketers (the Do-Not-Call apparently doesn't apply to business numbers) and I know about phishing in email. But this is a new one on me.

Her: "Hi, this is Jill. I'm calling about your copy machine.  I just need to know the model number on the front of it."
Me: "Sure. Can you just tell me what company you're calling from?"
Her: long silence followed by dial tone

If she had said she was from my copier service I'd have been happy to give her the information she wanted!  I wonder where she was calling from and why.