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The NETGEAR Nighthawk CAX80, a high performing modem/router combo that works with internet plans up to 1200 Mbps, has similar specs as the Comcast/Xfinity-only Motorola MT8733—DOCSIS 3.1, 2.5 ...
DOCSIS 3.0 and lower — 4 Gigabit b/g/n a 2.4 5.0 300 1 USB 2.0 — 2 1 6.5 FRITZ!Box 6430 Cable Cable DOCSIS 3.0 and lower — 4 Gigabit b/g/n 2.4 450 2 USB 2.0 0 2 0 7.30 German version only FRITZ!Box 6810 LTE LTE — 1 Fast b/g/n 2.4 300 — — Integrated a/b 0 0 — 6.35 Dual-band LTE modem (800 MHz, 2600 MHz) FRITZ!Box 6840 LTE LTE — 4 ...
DOCSIS employs a mixture of deterministic access methods for upstream transmissions, specifically time-division multiple access (TDMA) for DOCSIS 1.0/1.1 and both TDMA and S-CDMA for DOCSIS 2.0 and 3.0, with a limited use of contention for bandwidth reservation requests. In TDMA, a cable modem requests a time to transmit and the CMTS grants it ...
On devices like modems, bytes may be more than 8 bits long because they may be individually padded out with additional start and stop bits; the figures below will reflect this. Where channels use line codes (such as Ethernet , Serial ATA , and PCI Express ), quoted rates are for the decoded signal.
If this is a de facto standard imposed by modem chipset manufacturers, ISPs, et al, this article should say so. Separately but related. That 42.88 Mbps rate per channel for 256-QAM is obtained by multiplying 8 bits per symbol times the symbol rate 5.360537 Msym/s stated in DOCSIS 3.0 PHY spec. (pg 100). 8 x 5.360537 == 42.884296 Mbps
A few days later, Stop The Cap! reported that DOCSIS 3.0 customers would benefit from a speed and usage increase. By February 21, Express speeds of up to 12 Mbit/s would now be up to 18 Mbit/s, while Extreme speeds of up to 24 Mbit/s would be increased to 28 Mbit/s. Also, Ultimate speeds of up to 50 Mbit/s would now be up to 75 Mbit/s.
Under DOCSIS 3.0, up to 32 downstream and 8 upstream channels may be bonded. [27] These are typically 6 or 8 MHz wide. DOCSIS 3.1 defines more complicated arrangements involving aggregation at the level of subcarriers and larger notional channels. [28]
Version 5 of the Home Hub, released in August 2013, includes a VDSL2 modem for fibre-optic connections. New firmware is pushed out to Home Hubs connected to the Internet automatically by BT. The Home Hub 5 was followed on 20 June 2016 by the Smart Hub, a further development of the Home Hub, internally referred to as "Home Hub 6". [ 5 ]
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