[comp.dcom.telecom] Finding out the phone number you're calling from

pdb@SEI.CMU.EDU (Pat Barron) (05/17/87)

Not long ago, I had a phone company person out to install a second phone
line in my apartment.  He had some difficulty finding the correct terminal
pair in the apartment's telephone closet, so he put his test set on each
pair he suspected was the right one, dialed a number (I tried to look
over his shoulder, but I couldn't quite see :-) ), and a synthesized voice
would tell him the phone number of the line he was on.

Does anyone know if this capability is common to all CO's (I'd never seen
it before)?

--Pat.