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There is a volume control in the base of the telephone with 'loud', 'medium' and 'soft' settings (a silent setting was achieved by slackening off a screw on the tone ringer board inside the phone). Production of the new telephone commenced in 1965 by STC, and an initial quantity of 1,000 was offered to customers on a selective trial basis in ...
BT also offered "wires-only" ADSL service and promoted the technique of using a separate plug-in filter on every socket. [13] While both technically inferior and far less tidy than the solution BT engineers had used, it was usually adequate and was simple enough for a non-technical householder to understand.
[11] [5] In the 1920s, developments of non-positional transmitters, which worked in any orientation, permitted Western Electric to develop a handset model essentially free of these problems. The construction of the handset was changed from using hollow metal handles to solid Bakelite , a molded plastic material that was gaining acceptance in ...
The GPO (later BT) began to supply the public with a far greater range of stylish telephone instruments. With the advent of 'New Plan' sockets and changes in legislation, subscribers were now free to either rent their telephone or purchase one from any source (as long as it was an approved model).
In 2001, BT Group launched its Answer 1571 service as a free service, available at no extra cost to its existing telephone line customers. In 2007 a charge of £1 was introduced for any month in which two chargeable calls are not made on the line (this might apply, for instance, to people who have Carrier preselect with another telephone ...
The first subscriber's phone (called the 'audio customer') would be connected as normal. The second subscriber (called the 'carrier customer') would have his phone calls modulated on to an RF carrier or Carrier wave on the same physical phone line at around 40 kHz – high enough not to be noticeable to the audio customer.
The BT Versatility is a telephone PBX switchboard sold by BT and targeted at small businesses. It is manufactured by Taratel Communications previously Lake Communications in Ireland as the OfficeLink .
2007 Toyota Yaris hatchback owner's manual 1919 Ford Motor Company car and truck operating manual. An owner's manual (also called an instruction manual or a user guide) is an instructional book or booklet that is supplied with almost all technologically advanced consumer products such as vehicles, home appliances and computer peripherals.