Automated Attendant System is a processor control system that performs telephone console attendant functions such as answering a call, transferring callers to specific user stations,

BT's business containing all the income, costs and assets and liabilities associated with providing connections,

services which control the supply to end users of digital services other than digital television services and certain other specific exclusions.

Agreements made between two international operators at each end of a particular route for the handling of international calls.

the per-minute charge agreed by the two parties at each end of an international route at

Automatic Call Distributor, also known as Automated Call Distribution, is a device or product that distributes incoming calls to a specific group of terminals that agents use.

Asymmetric Digital Subscriber Line. Is one form of the Digital Subscriber Line technology, a data communications technology that enables faster data transmission over copper telephone lines than a

An automatic number announcement circuit is a special telephone number that is meant to be used by phone company’s engineers and other telecommunications technicians to determine the phone number of a particular line.

Automatic Number Identification is a feature of telephony intelligent network services that permits subscribers to display or capture the billing telephone number of a calling party. 

Answer Machine- A device for answering calls when there is no-one in attendance to accept the call, An answer phone may have a remote listening facility whereby the answer phone owner can ring their