MCI Caller ID phone number?

Question

ok, heres the deal. The phone system guys was in our office the other day testing our outgoing lines. He was useing speaker phone so i overheard a little bit of what he was doing. He was choosing a line within the phone system then dialing out, a voive camE over the phone saying "MCI blah blah blah, you have dialed from 855-555-5555. ie. Pick up the phone, select Line 2, dial 800something, get a voice telling you the number that you have dialed from. im wondering if this number or a similar one is available to me?

Answer 1

that number is for phone company use only!!!!

Answer 2

There arent any of those available to the public, they are only used by technicians and trouble techs.  I dont have it, but the techs and dispatch use that number a lot.

I suppose if you knew someone then maybe.....

Answer 3

i think the ANI number for MCI is 800-444-4444 but im not sure, i use 1-866-my-ani-is