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Call Data Channel

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Definition Edit

A Call Data Channel (CDC) is

[t]he interface between the surveillance switch and the law enforcement agency that carries the call set-up data. The CDC may be a switched connection or dedicated path through the Public Switched Telephone Network (PSTN) or may be separate from the PSTN, e.g., via a private line or a packet switched network.[1]

References Edit

  1. Electronic Surveillance in a Digital Age, at 71.

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