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:
- DOCSIS 2.0
- DOCSIS 3.0
- 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.