What is the white courtesy telephone? And what is the number?

Question

i saw it in a magazine, what is it?

Answer 1

A white courtesy phone is a phone that they had at hotels, airports, and other large places so that you could page someone to pick it up and talk to them.  There is no number.  

Example:  If you're meeting someone in the lounge and you're at the front desk, you could have your friend paged over the intercom.  "Ms. Smith, please pick up the white courtesy telephone."  Then your friend could pick it up and talk to you.

Answer 2

The "white courtesy telephone" is traditionally the phone in a hotel lobby for guests to make or receive calls.  The number is 877-4559 (UR-SILLY).