DID Number (Direct Inward Dialing)
A phone number that routes directly to a specific employee or department without going through a main reception line.
Direct Inward Dialing (DID) allows a company to assign individual, dialable phone numbers to specific extensions, departments, or users. Instead of callers dialing a main number and navigating a menu, they can dial the employee's DID number and ring them directly.
DID numbers are purchased in blocks from the telephone carrier. In a cloud PBX environment, a business can provision dozens or hundreds of DIDs instantly, assigning each to an extension, a ring group, a fax port, or an IVR. Because DIDs are virtual, they can be reassigned or reprogrammed in seconds without any physical rewiring.
Zonitel provides DID numbers for local area codes across the United States and Canada. You can have a New York number ring an agent in Miami, or a Houston number ring a team in multiple locations simultaneously. DID numbers can also be used as dedicated marketing tracking lines to measure campaign performance.