DOCSIS
Throughput

Version
Downstream
Downstream
Downstream
Downstream
Downstream
Downstream
Upstream
Upstream
Upstream
Upstream
Upstream
Version
Channel configuration
Channel configuration
Channel configuration
Channel configuration
DOCSIS throughput in Mbps
EuroDOCSIS throughput in Mbps
Throughput in Mbps
-
-
-
-
Version
Minimum selectable number of channels
Minimum number of channels that hardware must support
Selected number of channels
Maximum number of channels
DOCSIS throughput in Mbps
EuroDOCSIS throughput in Mbps
Throughput in Mbps
Minimum selectable number of channels
Minimum number of channels that hardware must support
Selected number of channels
Maximum number of channels
1.x
1
1
1
1
42.88 (38)
55.62 (50)
1
1
1
1
10.24 (9)
2.0
1
1
1
1
42.88 (38)
55.62 (50)
1
1
1
1
30.72 (27)
3.0
1
4
m
No maximum defined
m × 42.88 (m × 38)
m × 55.62 (m × 50)
1
4
n
No maximum defined
n × 30.72 (n × 27)
3.1
1 (m1 = 3) OR 1 (m2 = 1)
2 (m1 = 64) AND 24 (m2 = 24)
m1 m2
No maximum defined
m1 × 64.32 (m1 × 54) m2 × 42.88 (m2 × 38)
N/A
1 (n1 = 1) AND/OR 1 (n2 = 1)
2 (n1 = 32) AND 8 (n2 = 8)
n1 n2
No maximum defined
n1 × 64.32 (n1 × 54) n2 × 30.72 (n2 × 27)

Question: What speeds did the first three version of DOCSIS and EuroDOCSIS support?
Answer: The first three versions of the DOCSIS standard supported a downstream throughput with 256-QAM of up to 42.88 Mbit/s (38 Mbit/s after overhead), or 55.62 Mbit/s for EuroDOCSIS (50 Mbit/s after overhead).