The service for determining from which number a client has called. This helps to decide how to answer on the incoming call. A telephone company sends DNIS number to the telephone client’s system during establishing connection. As a rule, DNIS number consists from 4 to 10 digits.
http://www.voip-boom.com Originally founded in 2004 as Champion Communications, NexBoom is headquartered in Greenville, South Carolina. In the early days of the company, Champion became an industry leader in the promotion of Voice over Internet Protocol (