Summary

The DOCSIS Set-top Gateway (DSG) specification introduces additional requirements on a DOCSIS Cable Modem Termination System and DOCSIS Cable Modem (Annex B/J.112 and ITU-T Rec. J.122) to support the configuration and transport of a class of service known as "Out-Of-Band (OOB) messaging" between a Set-top Controller (or application server) and the customer premises equipment (CPE). In general, the CPE is intended to be a digital set-top device, but may include other CPE devices, such as residential gateways or other electronic equipment.