What is DID?

A DID (Direct Inward Dialing) number is an individual phone number that rings directly to a person or desk without going through a receptionist or menu.

DID (Direct Inward Dialing) is a phone number that reaches a specific person, desk or team directly — no auto-attendant, no receptionist. One company can have hundreds of DIDs arriving over a single internet connection or SIP trunk.

Buying context

DIDs are how staff get direct lines and how companies run per-department, per-location, even per-campaign numbers. When comparing VoIP providers, check the included DID count per seat and the monthly cost of extra numbers (typically $1–5/number) — it’s a small line item that scales with headcount. International DIDs (local numbers in other countries) are a global-calling differentiator.