Best DOCSIS 3.1 Gigabit Modems for XFINITY/Comcast, Cox and more

Many ISPs have started Gigabit DOCSIS 3.1 roll-outs in many areas and continue to bring gigabit services to new areas every month. Xfinity/Comcast: Nation’s largest Cable ISP Xfinity Comcast publishes and updates map for its gigabit DOCSIS 3.1 deployments and upcoming areas. It recently launched gigabit Internet service based on DOCSIS 3.1 throughout Colorado, its Oregon/SW Washington region and the company’s …

What is DOCSIS 3.0 Extended Upstream Transmit Power and How does it work?

As DOCSIS 3.0 evolved and most ISPs/MSOs replaced their DOCSIS 2.0 Modems with DOCSIS 3.0 Modems, there was a challenge with “DOCSIS 3.0 Upstream Power Levels” in the field.  What is the Challenge? Do we really need our DOCSIS 3.0 Modems to support “Extended Upstream Transmit Power”? How do I find if my Modem supports this feature? This article tries …

OFDM Sub-Carrier ranges on DOCSIS 3.1 Cable modem

Since DOCSIS 3.1 cable modems are out in the market for few months and ISPs such as Comcast have enabled OFDM in many of their regions, a question that is getting commonly asked what do  “active sub-carrier number range” mean and what is the total OFDM spectrum size. Here we take take example from our best CM1000 DOCSIS 3.1 Cable modem …

Best Comcast Xfinity Cable Modems and Modem Router Combos

Comcast is the largest Cable ISP in the US and majority of their customers lease modem from Comcast. You have to shell out $13/month (since End of the year 2018) for modem lease fees and additional fees for your TV DVR Set top box. The average cost of renting a modem is $13 a month, or $156 a year. The average …

How to Self-activate Your Own Cable Modem/WI-FI Cable Modem Router with Comcast XFINITY Service?

Before you begin: Purchasing a retail modem: Choose one of the Comcast XFINITY approved modems from the list and purchase it. Modems not on approved will fail self-activation. Installation Self-Activation Steps: Note: Since Xfinity/Comcast has updated their portal, screenshots do not match but process and steps are very similar. Newer portal is completely black in color and much faster. Step-1: …

All About DOCSIS 3.1 and DOCSIS 3.1 Cable Modems

Click here for Introduction for on DOCSIS 3.1 Technology Click here for Best DOCSIS 3.1 Cable Modem Comparison Click here for comparison of DOCSIS 3.0 vs DOCSIS 3.1 technology Click Here for list of Major ISPs Gigabit plans Click here for list of FAQs on DOCSIS 3.1 Technology, Service and Modems DOCSIS 3.1 technology enables a new generation of cable …

How to get Best Cable Modem: Rent vs Buy? Stop paying Rental Fees

If you are on Comcast/Xfinity or other larger ISPs such as Cox, Mediacom, Optimum/Cablevision/Altice, CableOne, WoW, Spectrum (Charter/TimeWarner/BrightHouse), Suddenlink, etc, most likely they are charging you monthly lease for their modem which ranges from $4.99 to $12 per month. Here are current fees: If you either on constant move or moving frequently, then renting modem is best for you. Your …

Cable Modem T3 and T4 Timeouts Error Messages and How to Fix them

If you have a Cable Modem for Internet services at your home, you might have most likely seen one of these DOCSIS Timeout messages. They are typically displayed due to an issue in your wiring, bad cables, Bad node, Bad signal from your ISP, wrong configuration in ISP CMTS/Headend, plant noise, Signal interference, and many other possibilites. Most of these …

How to fix your DOCSIS 3.0/3.1 signal Issues?

Signal levels on your home Cable Modem need to be at an optimal level for Cable modem to operate correctly. Otherwise, you might end up with lower speed/throughput, occasional or repeated disconnections, video buffering, higher latency, etc DOCSIS specifications list minimum CNR (carrier to noise ratio) levels not SNR levels. The SNR levels listed here are based on commonly recommended …