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  2. 1-5-7-1 - Wikipedia

    en.wikipedia.org/wiki/1-5-7-1

    The Answer 1571 service, a cut-down version of BT Group's Call Minder service, allows a calling party to leave messages when the called party is engaged or does not answer within a fixed number of rings. The system allows for the storage of up to 20 messages, each of which can be up to 2 minutes long, for up to 60 days (or 20 days once they ...

  3. Customer Service System - Wikipedia

    en.wikipedia.org/wiki/Customer_Service_System

    The Customer Service System (CSS) of the BT Group (previously British Telecommunications) is the core operational support system for BT, bringing in 70% of income for the company (figures from 1997). BT rolled out CSS nationally in 1989 and provided an integrated system for telephony—order handling, repair handling and billing.

  4. Telephone directory - Wikipedia

    en.wikipedia.org/wiki/Telephone_directory

    Subscriber names are generally listed in alphabetical order, together with their postal or street address and telephone number.In principle every subscriber in the geographical coverage area is listed, but subscribers may request the exclusion of their number from the directory, often for a fee; their number is then said to be "unlisted" (US and Canada), "ex-directory" (British English), or ...

  5. List of dialling codes in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/List_of_dialling_codes_in...

    This is a list of telephone dialling codes in the United Kingdom and the Crown Dependencies, which adopts an open telephone numbering plan for its public switched telephone network. The national telephone numbering plan is maintained by Ofcom , an independent regulator and competition authority for the UK communications industries.

  6. List of telephone exchanges in London - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone...

    As the telephone system was modernised and liberalised with multiple telephone companies and numbers became portable, the rigid correspondence of numeric codes to exchanges was relaxed, but even today it is likely that a (7)387 number, for example, is located in the Euston area.

  7. Category:British Telecom buildings and structures - Wikipedia

    en.wikipedia.org/wiki/Category:British_Telecom...

    This page was last edited on 9 November 2017, at 21:25 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  8. BT Group - Wikipedia

    en.wikipedia.org/wiki/BT_Group

    BT Group plc (formerly British Telecom) is a British multinational telecommunications holding company headquartered in London, England.It has operations in around 180 countries and is the largest provider of fixed-line, broadband and mobile services in the UK, and also provides subscription television and IT services.

  9. Directory assistance - Wikipedia

    en.wikipedia.org/wiki/Directory_assistance

    In this case, AT&T Illinois bills the call. 411 NDA: National Directory Assistance. 411 is dialed and the operator is requested to search for a listing in an area code not local to the caller. For example: The caller lives in area code 630 (Oak Brook, Illinois) and requests a listing for a business in area code 213 (Los Angeles, California).