Full Description

The DOCSIS Set-top Gateway (DSG) specification defines the interface requirements on a DOCSISCMTS and DOCSIS CM to support the configuration for transport of a class of service known as "Out-Of-Band (OOB) messaging" between a Set-top Controller (or application servers) and the customer premiseequipment (CPE). In general, the CPE is intended to be a digital Set-top Device, but may include otherCPE devices, such as Residential Gateways or other electronic equipment. Figure 1-1 provides the contextfor this specification in relation to the data over cable reference architecture and the other interfacespecifications in the family.

Traditionally, the physical transport of this Out-Of-Band messaging has been carried over dedicatedchannels, as specified by [ANSI/SCTE 55-1] and [ANSI/SCTE 55-2]. This specification defines theapplicable communications standards and protocols needed to implement an Out-Of-Band messaginginterface to the Set-top Device using DOCSIS as a transport. It applies to cable systems employing HFCand coaxial architectures. Specifically, the scope of this specification is to:Describe the communications protocols and standards to be employedSpecify the data communication requirements and parameters that will be common to all units

The intent of this document is to specify open protocols, with a preference for existing, well-known andwell-accepted standards. This interface specification is written to provide the minimal set of requirementsfor satisfactory communication between the Set-top Controller and the Set-top Device over the DOCSIStransport. "DOCSIS Set-top Gateway" (DSG) shall be the general term used to describe this interface.

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Published: 01/01/2005 ANSI: ANSI Approved Number of Pages: 105 File Size: 1 file , 370 KB