Science Fair Project Encyclopedia
In telecommunication, a Centrex service (CTX) is a service offered by Bell Operating Companies that provides functions and features comparable to those provided by a PBX or a PABX. Note: "Centrex C.O." indicates that all equipment except the attendant's position and station equipment is located in the central office. "Centrex C.U." indicates that all equipment, including the dial switching equipment , is located on the customer's premises.
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details