DNIS

from The Free On-line Dictionary of Computing (8 July 2008)

Dialled Number Identification Service
DNIS

   <communications> (DNIS) A service that tells the recipient of
   a telephone call the telephone number dialled by the person
   making the call.  It is used by call centres hosting multiple
   numbers, voicemail systems and ISPs offering shared dial-in
   services.

   Compare {ANI}, {Caller ID}.

   (2005-02-09)