When a telephone compan offers direct marketing access to incoming calls on their lines. 800 and 900 numbers use this to sell to customers they do not know or have yet. When the call is picked up it is saved and used in research for future calls.
Link to This DefinitionDid you find this definition of DIALED NUMBER IDENTIFICATION SERVICE (DNIS) helpful? You can share it by copying the code below and adding it to your blog or web page.
Written and fact checked by The Law Dictionary