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Choosing the Right Cable Modem
Last Updated: Wed, 18 Sep 2013 > Related Articles
To use Cox High Speed Internet, you will need a cable modem. It is important to choose the right type of device for the level of service you choose with Cox. This will help you make the right choice.
When choosing a modem, there are three things you should consider:
All cable modems use a standard for hardware and software called “Data Over Cable Service Interface Specification” (DOCSIS). The maximum Internet speed you can achieve depends upon both the DOCSIS version of your equipment and the Cox High Speed Internet package to which you subscribe.
If you have an older modem, you may greatly increase your Internet speeds by upgrading to a new one. When selecting a device, you should consider current and future speeds, as well as the number of users and devices in your household, to make sure you get the most for your money.
Cox makes significant investments in its network, and these investments enable Cox to periodically upgrade our Internet packages to give you more speed. DOCSIS 3.0 equipment will provide you with the best speed experience and allow Cox to operate a more efficient network.
DOCSIS 3.0: The current industry standard of DOCSIS, and works with all Cox High Speed Internet packages. Many DOCSIS 3.0 devices are also IPv6 compliant. DOCSIS 3.0 modems are capable of channel bonding, which enables multiple downstream and upstream channels to be used together at the same time by a single user. The more channels a device can bond, the higher the speeds it can achieve.
There are two types of DOCSIS 3.0 modems:
- 8 x 4 channels (8 downstream and 4 upstream): This is the newest generation modem and is recommended for all CHSI customers, regardless of the package that you select, and is strongly recommended for all Ultimate package customers to support future speed increases.
- 4 x 4 channels (4 downstream and 4 upstream): While this modem will work with Premier and Premier Plus (where available) packages today, the 8 x 4 will be compatible with future speed increases, while the 4 x 4 may not.
A DOCSIS 3.0 WiFi modem combines a cable modem, router and wireless access point in a single device providing a cost-effective networking solution for both the home and small office. Cox approved WiFi modems are 8 x 4 and can consistently achieve download speeds of up to 150 Mbps.
DOCSIS 2.0: These older generation devices will work with Cox Starter and Essential Internet, although DOCSIS 3.0 (8 x 4) equipment is recommended for all packages due to the network efficiencies it provides.
DOCSIS 1.0 and 1.1: These are the oldest versions of DOCSIS, are not IPv6 compliant and are essentially obsolete. DOCSIS 1.0 devices will not work on the Cox network. If you have a DOCSIS 1.1 device you should replace it to improve your speeds.
Use this table to help make the right choice for modem type based on the level of Cox High Speed Internet you would like:
|Cox High Speed Internet Package||Minimum Required DOCSIS Version|
|Preferred||DOCSIS 3.0 (4 x 4 channel)|
|Premier Plus (where available)|
|Ultimate||DOCSIS 3.0 (8 x 4 channel)|
If you have an older modem, you may greatly increase your Internet speeds by upgrading to a new one.
It is also important to make sure the modem you are buying will work with the Cox network. We strongly recommend checking our compatible modems list before buying a modem.
You may be tempted to purchase a modem at a yard sale, in a thrift store, or from another person. This may not save you time or money and may result in connection problems or slow speeds. Used modems may be older or not fully functional. They may also be associated with an existing Cox account, therefore, cannot be used.
We encourage you to invest in equipment that will assure you get the best experience and speeds that Cox has to offer. Purchasing a new modem protects you with a warranty and helpful advice from experts. You may buy a new modem from a major retail store or directly from Cox.