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.
Alsophila International (HongKong) Limited (Alsophila HK)
Alsophila International (HongKong) Limited(Alsophila HK)
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