The Road to DOCSIS 4.0

The Road to DOCSIS 4.0. Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco and special guest Jeff Finkelstein Executive Director of Advanced Technology of COX Communications. How to go from sub-split, to targeted mid-split or high-split, then finally to ultra-high-split and 1.8 GHz. Ask any questions you may have in our live chat.

The discussion is on all things DOCSIS 4.0.

The Road to DOCSIS 4.0:

• General intro
• General overview of the history of DOCSIS and the road to DOCSIS 4.0
• What are the physical layer difference with DOCSIS 3.1 and DOCSIS 4.0?
  • FDX
    • done off chip
    • own eco system
    • No diplex filter
    • Echo cancellation needed
  • ESD – Extended Spectrum DOCSIS
    • done off chip
    • more traditional
  • New OFDM blocks 3/5 downstream / upstream
  • New silicone
  • New gain blocks
• CPE – one size doesn’t fit all
• CPE is only half duplex
• ESD
• Upstream 5-42, 5-65 Euro DOCSIS
• 5-85 Mid split
• 5-204 High split
• also supports 300, 396, 492, 684
• Why do this – 10 Giggabit for second? 10G = collection of technology
• Downstream
• Housing limits (RF issues)
• Symmetrical DOCSIS
• The upstream is more important to some users
• Fiber competition
• Coax is faster on light and the same tiers are offered in coax as in fiber – It’s also in the ground or pole now
• DOCSIS 4.0 Late 2024 or early 2025
• DOCSIS 3.1 will run first and then move into DOCSIS 4.0
• Gaming discussion
• ATDMA in the upstream add OFDMA
• 1.8GHz to open up the upstream
• Consumption on the downstream still increasing
• Increase spectrum
• Eliminate single carrier QAM
• ROI is absolutely a consideration when doing upgrades
• Many operators are either going full duplex at 1.2 GHz or ESD 1.8 GHz
• Most vendors are comminuted to DOCSIS 4.0
• Two CPEs? One CPE that supports both ESD or FDX?
• Different CPEs and modems
• Starlink discussion
• Samknows Testing
• 3Ghz – ultra-high frequency

End Podcast

John and Jeff thank you for your time today. This was a great episode.  Our next Episode 74 in April 16th on OFDMA troubleshooting and Dynamic Range Windows – DRW issues with DOCSIS 3.1

You can watch us live or recorded on Youtube or listen to us on your favorite podcaster. Links to everything is on the volpefirm.com webpage. 

If you have enjoyed this webcast, please do hit the subscribe button so that you never miss an episode.

Thank you so much for being here and we will see you next month. 

Upcoming events can be seen under Broadband Events. Previous events can be seen under the video tab or blog search podcast.

Upcoming events can be seen under Broadband Events. Previous events can be seen under the blog.

• If you are watching this on youtube please hit the subscribe button!
• Let us know what you think and remember to share!  
• You can find slides at the bottom of the page and some on slideshare.  
• Find out about events or articles by following us on Twitter, LinkedIn or Facebook too.

Also available on iTunes, Google Podcasts, Spotify, vurbl see podcasts “get your tech on”.