10.24.2.2. Definition of Terms 
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Term
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Definition
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DNIS(Dialed Number Identification
Service)
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This feature allows special call routing and
special call displays based on the original called (dialed) number.
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SID/ANI: (Station Identification
/ Automatic Number Identification)
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This Feature allows special call routing and
special call displays based on the calling number.
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ANI
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The Automatic Number Identification
is a public network customer billing number stored at the public network
central office serving the originator of the call. The ANI may
be delivered when the SID number is not available.
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SID
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The Station Identification is the calling
party number of the station originating the call.
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DIDBLK
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Incoming Direct Inward Dialing
(DID) blocking.
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