Dialed number identification service (DNIS) is a telephone service, tracking the telephone number of the dialed calls. This service informs the telephone call recipient of the telephone number dialed. This feature is useful for determining how to answer the calls (inbound calls). This service is widely used by call centers hosting multiple numbers and ISPs offering shared dial up services. It is often found in 800 and 900 lines. Whenever any inbound call is recieved, the switch identifies the number for which it is dialed and accodingly the appropriate recording is played.
When the carrier passes calls to the automatic call distributors, the dialed number identification service is also passed along so that the automatic call distributor can use this information to route calls. Telecommunication Company sells the dialed number identification service (DNIS) to corporate clients. The dialed number identification ranges from 4 to 10 digits in length. For instance, different companies have different toll free numbers for every product lines they sell. If call centers are handling calls for multiple product lines, the switch receiving the calls can examine dialed number identification and play the appropriate recorded greeting. Multiple toll free numbers can also be used for multi lingual identification. Dialed number identification service is used as routing information for interactive voice response systems. It determines the script or service to be played based on the dialed numbers. Dialed number identification service distinguishes different lines letting the interactive voice response service to know which service has to be provided to callers. A remote access server captures the dialed number identification service to provide customers the ability to set up parameters for dial in clients based on phone numbers dialed or the physical WAN port dialed. These parameters are based on authentication, which validates users with the standard point-to-point authentication method. It may also allow users to login without any authentication, as well as assign dial in users an IP address from multiple pools depending on phone number dialed.
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