Direct Inward Dialing, commonly known as DID, is a telecommunication service that allows external callers to directly reach a specific internal extension without the need for operator assistance.
Modern Call Forwarding is a high level communication that permits approaching calls to be diverted to elective telephone numbers or correspondence stations in view of predefined rules or conditions. Dissimilar to customary Call Forwarding, which included physically diverting calls, present day Call Forwarding uses innovation to smooth out the interaction and further develop effectiveness.