(DID) Incoming calls are directed to the desired PBX or Centrex extension automatically without the assistance of the system attendant or operator.
A PBX or CENTREX feature in which incoming calls are completed to extensions without the assistance of an operator.
The ability for a caller outside a company to call an internal extension without having to pass through an operator or attendant. In large PBX systems, the dialed digits are passed from the PSTN to the PBX, which then completes the call.
A service provided to multi-station locations (tyupically PBX’s) whereby incoming calls are directly routed to the desired extension without the intervention of the switchboard operator.
A service that allows outside parties to call directly to an extension of a PABX. Known in Europe as direct dial in (DDI).
(DID) Incoming PBX or Centrex (a service which permits incoming calls to be dialed direct) calls completed to extensions without the assistance of an operator.
Direct Inward Dialing (DID, also called DDI in Europe) is a feature offered by telephone companies for use with their customers' PBX system, whereby the telephone company (telco) allocates a range of numbers all connected to their customer's PBX. As calls are presented to the PBX, the number that the caller dials is also given, so that the PBX can decide which person in the office to route the call to.