What is DOCSIS 4?

What is DOCSIS 4?

Cable broadband networks, consisting of both fiber optic and coaxial cable, already crisscross multiple countries, and in the U.S. reach over 90% of American households. DOCSIS 4.0 technology allows us to increase the efficiency of this existing infrastructure without the need to lay more cable.

What is opendocsis® 4?

DOCSIS® 4.0 technology is an extension of the DOCSIS 3.1 specifications that will significantly increase upstream capacity and enable symmetric multi-Gbps services over existing HFC networks.

What is cross-version compatibility in DOCSIS?

Cross-version compatibility has been maintained across all versions of DOCSIS, with the devices falling back to the highest supported version in common between both endpoints: cable modem (CM) and cable modem termination system (CMTS).

What is the difference between DOCSIS 3 and 4 cable modems?

The difference in specifications is an increase in upstream capacity and more options for operators to increase downstream capacities. Current DOCSIS 3.1 cable modems support capacities up to 5 Gbps downstream and 1.5 Gbps upstream. DOCSIS 4.0 cable modems will support capacities up to 10 Gbps downstream and 6 Gbps upstream.