DID

Also known as: DIDs, DID number, DDI, direct inward dial

Direct Inward Dial, a public phone number bound to a SIP trunk and routed by the PBX to an inbound destination (extension, queue, IVR, time condition). DIDs are added at YCM against a shared trunk and assigned per-Cloud-PBX.

A DID is the public number a caller dials to reach the customer. In Yeastar’s YCM model, DIDs live as records in Repository → DID Numbers, each carrying the number itself (in +xxx or xxx format), a friendly name (the didName, e.g. “Able Moose Main”), and the list of trunks the number is delivered on (trunkIds, usually one, with multi-trunk shapes for failover). The DID isn’t routed anywhere until the MSP assigns it to a Cloud PBX from the PBX’s Assigned DIDs tab.

On the customer’s PSE side, once a DID is assigned, inbound routes (Call Control → Inbound Routes) match the dialled DID and send the call to the chosen destination (extension, ring group, queue, IVR, time condition). The DID-to-destination map is where most “wrong destination” callflow tickets root-cause.