Direct inward dialing (DID), also called direct dial-in (DDI) in Europe and Oceania, is a telecommunication service offered by telephone companies to subscribers who operate a private branch exchange (PBX) system.[1][2] The feature provides service for multiple telephone numbers over one or more analog or digital-physical circuits to the PBX and transmits the dialed telephone number to the PBX so that a PBX extension is directly accessible for an outside caller, possibly by-passing an auto-attendant.

 

International inbound numbers provide your company with an immediate presence overseas and extend the availability of your service further. They can enable your business expansion to new regions and markets at minimal costs.

 

Your customers abroad only incur local charges when calling your International Direct Dial Numbers (DDI) and the calls are automatically forwarded directly onto the PRI. Any customers calling your International Toll-Free numbers do not incur any call charges at all.

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