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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!telecom-request
- Date: Mon, 25 Jan 1993 12:25:58 +0000
- From: J.Harrison@bra0401.wins.icl.co.uk
- Newsgroups: comp.dcom.telecom
- Subject: Discovering Your Own Phone Number in the UK
- Message-ID: <telecom13.44.14@eecs.nwu.edu>
- Organization: TELECOM Digest
- Sender: Telecom@eecs.nwu.edu
- Approved: Telecom@eecs.nwu.edu
- X-Submissions-To: telecom@eecs.nwu.edu
- X-Administrivia-To: telecom-request@eecs.nwu.edu
- X-Telecom-Digest: Volume 13, Issue 44, Message 14 of 15
- Lines: 33
-
- Within the United Kingdom there have traditionally been a variety of
- numbers (usually 17x) you can call to find out the number of the line
- from which you are calling. Like in the U.S., these numbers varied
- depending on locality.
-
- A BT engineer showed me how to dial 175 to get my own number and I
- believe BT has now standardized on this. In my own area code it only
- works with lines supporting "Star Services" (the BT name for the
- package providing call waiting, three-way calling, etc.), but I have
- heard that in other areas it works on any line connected to a digital
- exchange (yes there are STILL a small handful of Strowgers here!)
-
- If you call 175 you get (sometimes) a minute or so's silence designed
- to deter the casual or wrong-number caller. Then a voice tells you
- your area code + number, then "start test".
-
- Flash the switchhook (actually you have to hold it down for nearly a
- second otherwise nothing happens) - you then get some information
- about the earthing (grounding) on your line, plus a request to selct
- next test. You can then dial 1 for a DTMF dialpad test (it expects you
- to key 123456789*0# and then tells you if it heard the tones OK), or 3
- and it will give you what it calls a "coin pulse test" designed for
- payphones.
-
- Anything else says you dialed wrongly, EXCEPT if you dial 4 which says
- "not from this line you can't!". If anybody knows what this does (or
- the other several undocumented Star Services codes) I'd like to know.
-
-
- Joe Harrison
- Yes, the disclaimer; I'm on behalf of me not my employer.
-
-