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Wholesale line rental (WLR) is a service in which a telecommunications operator takes control of all the connections made through a telephone line from the native operator and collects the subscription fee from the subscribers. [1] [2]
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.
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.
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).
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.
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EE (formerly Everything Everywhere) is a British mobile network operator and internet service provider, and a brand of BT Consumer, a division of BT Group.It was established in 2010 and is the second-largest mobile network operator in the United Kingdom, with 21.2 million customers as of September 2022.
BT Mobile is a mobile virtual network operator (MVNO) provided by BT Consumer; a division of BT Group in the United Kingdom that was launched in March 2015. [1] It uses the EE network [ 2 ] via an MVNO agreement signed in March 2014 [ 3 ] as well as using the spectrum BT won in the 2013 4G auction.