Direct inward dialing

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Direct inward dialing (DID) is a service provided by telephone service providers in which a block of telephone numbers are provided over a trunking service.

PodSnacks

<mp3>http://podcast.hill-vt.com/podsnacks/2008q4/did-dod-dnis.mp3%7Cdownload</mp3> | DID-DOD-DNIS