Shenzhen Gateway Technology Ltd West 3/floor,Vision Business Park, Keji South Rd, Hi-tech Industrial Park Shenzhen City Guangdong Province ,518057 China
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.
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