DID – Direct Inward Dialing

(DID) Direct Inward Dialing- A service that allows an enterprise to allocate individual phone numbers to each person within its PBX system. Offered by telephone companies for use with their customers’ PBX systems, they allocate a range of numbers all connected to their customer’s PBX. As calls are presented to the PBX the number that the caller dialed is also given, so the PBX can route the call to the desired person or other feature within the organization.

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