Definitions for "DNIS"
Dialed Number Identification Service. When a call is delivered from the network, a four-digit DNIS (Dialed Number Identification Service) is also delivered. First Data Voice Services can play different phrases or entire scripts based on the DNIS the IVR receives. The DNIS identifies the toll-free number dialed by the caller.
Dialed Number Identification Service. A telephone service that identifies the number that the caller dialed for the receiver of the call. DNIS is a common feature of 800 and 900 services, and can identify the number originally dialed when multiple 800 or 900 numbers terminate on the same destination trunks. DNIS works by passing the dialed number to the destination device, which can act upon this data to control its routing, queuing, IVR, or other call behavior. DNIS is typically used to separate call treatment for different inbound campaigns or help desk numbers, whether in one enterprise or at a service bureau.
See Dialed Number Identification Service.
Keywords:  did, digital
DNIS is digital DID.