Cable Modems 101: Difference Between DOCSIS 2.0, 3.0 & 3.1

Learn > Cable Modem & Routers > Cable Modems 101: Difference Between DOCSIS 2.0, 3.0 & 3.1

DOCSIS 3.1 is significantly faster than DOCSIS 3.0, because of its more efficient technique of data spectrum processing which dramatically increases the amount of data that is sent to your home from your Cable Internet Service Provider. This article will discuss cable modems, what they are, important features to look for and examines the differences between DOCSIS 3.0, 3.1 and older DOCSIS standards.

Cable modems are hardware devices that facilitate communication between your computer and your Internet service provider (ISP). A ​cable​ modem communicates through a landline connection like coaxial cabling. This wired connection converts into a digital signal, which gives you access to broadband Internet.

Simply put, a cable modem connects you to the Internet.

The most important specs to pay attention to with cable modems are ​DOCSIS standards​ and ​channel bonding​.​ ​All modems have a DOCSIS standard, which determines how fast your Internet will be. Channel bonding numbers determine how many download and upload channels your cable modem has.

Channeling bonding refers to how many channels a modem can combine to send more information to your ISP and back. For example, a cable modem with 32×8 channels means that it has 32 download channels and 8 upload channels, and a maximum Internet speed of 1 GB. Whereas a cable modem with 8×4 channels only gets speeds up to 100 Mbps. The more channels the faster the speed.

But let’s focus on DOCSIS.

 

What is DOCSIS?

DOCSIS stands for ​Data Over Cable Service Interface Specification. It is an international telecommunications standard the addition of high-bandwidth data transfer to an existing coaxial cable TV system. This is an important feature to know because it influences which modem you get for a cable Internet connection.

DOCSIS 1.0
Highlights
Initial cable broadband technology
Downstream Capacity
40Mbps
Upstream Capacity
10Mbps
Production Date
1997
DOCSIS 1.1
Highlights
Added voice over IP service
Downstream Capacity
40 Mbps
Upstream Capacity
10 Mbps
Production Date
2001
DOCSIS 2.0
Highlights
Higher upstream speed
Downstream Capacity
40 Mbps
Upstream Capacity
30 Mbps
Production Date
2002
DOCSIS 3.0
Highlights
Greatly enhances capacity
Downstream Capacity
1 Gbps
Upstream Capacity
100 Mbps
Production Date
2006
DOCSIS 3.1
Highlights
Capacity and efficiency progression
Downstream Capacity
10 Gbps
Upstream Capacity
1-2 Gbps
Production Date
2013
FULL DUPLEX DOCSIS 3.1
Highlights
Symmetrical streaming and increased upload speeds
Downstream Capacity
10 Gbps
Upstream Capacity
10 Gbps
Production Date
2017

Why is this important?

Each new DOCSIS standard has increased how quickly information travels from your ISP to your home and back. Which means faster download and upload speeds. For example, DOCSIS 3.1 is faster than 3.0 and 2.0.

DOCSIS 2.0: ​This was the original standard.

DOCSIS 3.0: ​As the standards increased from 2.0 to 3.0, so did the Internet service plan speeds that a cable modem good reach.

DOCSIS 3.1: ​This is the latest standard, meaning that it is the fastest.

The latest DOCSIS standard, DOCSIS 3.1 is ​capable of 10 gigabits per second (Gbps) download speeds and 1 Gbps upload speeds. However, the most widespread DOCSIS standard is DOCSIS 3.0, which is capable of 32 download channels at one time and over 1GB download speeds.

Hitron’s cable modems and cable modem routers​ offer an array of DOCSIS 3.0 & 3.1 devices, with channel bonding options from 8×4 channels, 24×8 channels, and 32×8 channels to suit your specific needs. Get faster, better Internet in your home with Hitron today.

For more information about cable modems, cable routers, MoCA or other home networking solutions check out Hitron’s ​Learn Page​.

 

Featured Articles

Buying vs Renting a Router

To get an Internet connection in your home, you need a modem of some type. The modem communicates with your Internet service provider (ISP), but to get wireless internet (Wi-Fi) you also need a router. The router is a critical part of your home Wi-Fi or office Wi-Fi...

Cable Modem Routers… A Complete Guide

This Cable Modem Router guide will help you to understand essential information about Cable Modems and Cable Modem Routers so you can make informed decisions about your Internet services. In this article, we will cover: What is a Cable Modem and How Does it Work? A...

What is a Router?

Wireless Internet requires hardware. This hardware includes a modem and also a router. If you want to set up wireless Internet (Wi-Fi) in your home, you need these devices. We’ve covered what a modem is (including cable modems) so this page focuses on what a router...

Why Buy a Gateway Instead of a Modem?

When setting up Internet in your home or office, you need a modem to get the connection and you need a router to distribute the signal to your devices. Having two separate devices isn’t practical for everyone, and it can be confusing as well. Not to mention, more...

The Ultimate Cable Modem Upgrade to DOCSIS 3.1 & Wi-Fi 6

When you set up Internet in your home, you get a modem. If you want wireless Internet, you also get a router. Often you get the devices through your Internet service provider (ISP), however, you can buy your own. This page focuses on modems.  Modems are the small box...

Modem not working?

Easily troubleshoot your Internet connection using this simple coax testing tool.

Instantly test your coax wiring and outlets for the presence of valid Internet signals from your Cable Internet provider.

Related Articles

3

Cable Modem Channels Explained

Cable modems have DOCSIS channels for downstream and upstream; we explain these channels, how many you need and how they work.