Centrex is a portmanteau of central exchange, a kind of telephone exchange. It provides functions similar to a PBX, but is provisioned with equipment owned by, and located at, the telephone company premises.
Centrex service was first installed in the early 1960s in New York's financial district by New York Telephone. As of 2003, it was estimated that there were 20 million Centrex lines installed worldwide by 20 telephone companies, with the most installations in the United States (15 million), Canada (2 million), and The United Kingdom (1 million). This accounted for approximately 5% of all installed business telephone lines, worldwide.
In terms of user-visible features, Centrex and PBX are similar. Features include:
Direct inward dialing (DID)Automatic routing of calls to obtain lowest costCall pick-up groupsCall forwardingConference callingAutomatic call distribution (ACD)Call detail recording referenceEver curious about what that abbreviation stands for? fullforms has got them all listed out for you to explore. Simply,Choose a subject/topic and get started on a self-paced learning journey in a world of fullforms.
Allow To Receive Free Coins Credit 🪙