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Fault mimics to present to the exchange's test equipment. An analogue modem to receive data calls for remote diagnostics. A battery backed real-time clock and memory to store the time and type of fault events like bit errors. A 25-pin RS232 connector for local access to the SMAC card's diagnostic logs.
1-5-7-1 is a family of calling features in the United Kingdom, for residential and business telephone lines and for mobile telephones, that are provided by BT Group and several other telephone service providers. The family is named after the telephone number 1571, the special service number that is used to access it.
The site enables you to find more than just reverse lookup names; you can search for addresses, phone numbers and email addresses. BestPeopleFinder gets all its data from official public, state ...
The Post Office/BT system is described here from the original term ‘Engineering Circuit Designation’. Other PTOs have their own scheme and would be suitable for inclusion. The Post Office or BT system historically used PW and R, optionally followed by a Region and/or Area code, followed by a number of digits between 4 and 6 for rented ...
A domestic single British telephone line installation will have a single master socket or line box in the premises, which is provided by BT or another service provider: this socket is the demarcation point between the customer-owned and maintained on-premises wiring, and the telephone network.
As cellular phones become more popular, there have been plans to release cell phone numbers into public 411 and reverse number directories via a separate Wireless telephone directory. However, these plans have come under opposition from internet based privacy advocate groups, and blogs, often citing privacy concerns.
In telecommunications, a plant test number is a telephone number reserved for use by telephone installers or other workers to test an individual telephone line. Test numbers are typically unlisted. The North American Numbering Plan (NANP) reserves the exchange (central office) prefixes 958 and 959 for plant testing. [1]
However, the omission of Marconi from BT's 21CN supplier list, and the shift in focus from telephony to broadband, led to much of the System X estate being maintained. The switched telephone network (both PSTN and ISDN ) is due to be turned off on 31 January 2027, after customers are moved to voice over IP services.