e/Dialed Number Identification Service

Information
has gloss	eng: Dialed Number Identification Service (DNIS) is a service sold by telecommunications companies to corporate clients that lets them determine which telephone number was dialed by a customer. This is useful in determining how to answer an inbound call. The Telecommunications company sends a DNIS number to the client phone system during the call setup. The DNIS number is typically 4 to 10 digits in length.
lexicalization	eng: Dialed Number Identification Service
instance of	(noun) validating the authenticity of something or someone certification, authentication