[comp.dcom.telecom] X11 Numbers and Purposes

seanwilliams@attmail.com (01/14/91)

While playing around with my phone, I came across the following X11
numbers and what they do.  Are these constant in different regions or
specific to only one exchange/telco?  (I have United Telephone of
Pennsylvania) Obviously, I have only listed the numbers which were not
met with a "Call cannot be completed..." recording.

211:
	Upon connection, plays one long tone, then silence.  Whenever you
	press any number from a Touch-Tone phone, plays 3 short beeps.
	Whenever you dial any number from a rotary phone, replays the
	original long tone.  I guess this number is used for testing
	purposes.

311:
	Digitized voice reads off the number from which you have called.
	There must be SOME use for this.

411:
	"We're sorry, your call cannot be completed...(etc)...717-243"

	This recording is from a different exchange.  My exchange is 717-834.
	The telco's regional / area office is located in the 243 exchange,
	however.  I have heard of this number being used in other areas as
	the directory assistance number, but we use 1-555-1212.  (This number
	reaches Bell of Pennsylvania's Directory Assistance.  I'd assume that
	United must not have their own.)

511:
	I kept getting a busy signal when calling this number.  Maybe that's
	all it's supposed to do.

611:
	Friendly repair service representative answers.

911:
	The hi-tech computerized emergency number where they can find your
	house and list your name before they even answer your call. (really!)
	This service was just put into operation in my area last month, and
	the phone company has warned us repeatedly to call only in case
	of real emergencies. (They have all that computer equipment, but
	they only have two incoming lines.  Okay, so it IS a small county!)

So that's all for my experimentation.  Maybe someone else has numbers
which do something else?  Or maybe different numbers which do
basically the same thing?


Sean E. Williams    seanwilliams@attmail.com