DOCSIS

DOCSIS is an standard to exchange data over the coaxial cable, also known colloquially as TV cable.

DOCSIS versions

There are different versions of DOCSIS:

  1. DOCSIS 2.0
  2. DOCSIS 3.0
  3. DOCSIS 3.1

DOCSIS 3.0

DOCSIS was ratified in the following ITU-T Recommendations:

  • J.222.0
  • J.222.1
  • J.222.2
  • J.222.3: DOCSIS security services

DOCSIS 3.1

The maximum speed in DOCSIS 3.1 is 10 Gbps downstream and 1 Gbps upstream.

The OFDM subcarrier spacing in DOCSIS 3.1 is 25 and 50 MHz.

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