Dialed Number Identification Service (DNIS) is a service offered by

telecommunication Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electronic means, typically through cables, radio waves, or other communication technologies. These means of ...

s companies to corporate clients which identifies the originally dialed

telephone number A telephone number is the address of a Telecommunications, telecommunication endpoint, such as a telephone, in a telephone network, such as the public switched telephone network (PSTN). A telephone number typically consists of a Number, sequ ...

of an inbound call. The client may use this information for call routing to internal destinations or activation of special call handling. For DNIS service, the

telephone company A telecommunications company is a kind of electronic communications service provider, more precisely a telecommunications service provider (TSP), that provides telecommunications services such as telephony and data communications access. Many t ...

sends a sequence of typically four to ten digits during call setup. Direct inward dial (DID) service also provides DNIS. For example, a company may have a different toll-free telephone number for each product line it sells, or for multilingual customer support. If a

call center A call centre (English in the Commonwealth of Nations, Commonwealth spelling) or call center (American English, American spelling; American and British English spelling differences#-re, -er, see spelling differences) is a managed capability th ...

is handling calls for multiple product lines, the corporate telephone system that receives the call analyzes the DNIS signaling and may play an appropriate recorded greeting. For

interactive voice response Interactive voice response (IVR) is a technology that allows telephone users to interact with a computer-operated telephone system through the use of voice and DTMF tones input with a keypad. In telephony, IVR allows customers to interact with a ...

(IVR) systems, DNIS is used as routing information for dispatching purposes, to determine which script or service should be activated based on the number that was dialed to reach the IVR platform. In the United States, DNIS is commonly provided for 800- and 900-services.

References

Authentication methods Telephone numbers {{telephony-stub

See also

References