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Features of the original document layout such as columns, tables, line and letter spacing, pagination, and margins will not be preserved in the text version. If you need the complete document, download the WordPerfect version or Adobe Acrobat version, if available. NSD File No. The Commission's rules with respect to delivery of CPN and privacy functions are outlined in 47 C.F.R. 64.1601. Specifically, all carriers that use Signaling System 7 and software capable of blocking and unblocking CPN delivery are required to transmit CPN on interstate calls to interconnecting carriers.