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Docsis Set-Top Gateway (DSG)

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Light Reading
9/29/2009
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The Docsis Set-Top Gateway (DSG) is a CableLabs specification describing how out-of-band data (for electronic program guides, for example) is delivered to a digital cable set-top box using the cable operator's Docsis data channel.

DSG, a required component of tru2way, is a standards-based replacement for proprietary in-band set-top data communications paths used by legacy (pre-tru2way) Motorola Inc. (NYSE: MOT) and Cisco Systems Inc. (Nasdaq: CSCO) set-tops and headends.

For DSG to work, support for it must be present in the set-top (via an embedded modem) and at the cable modem termination system (CMTS).

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