By Chris Topazi – As many operators are moving toward DOCSIS 4.0-capable network upgrades, much of the industry is migrating toward more intelligence deeper in the network. Continuing the trend from distributed access architectures (DAAs) using remote PHY, active network elements are becoming a vital means of collecting metrics
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By Alan Skinner – We look forward to additional field testing in 2025 using production CMTS/node hardware and longer cascades, but with the results of this field trial we feel confident in the direction we’re going with ESD and should be able to enjoy generous network capacity and competitive subscriber tiers for years to come.
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By Kraig Neese – The delivery of the Internet over a piece of coax has taken quite the journey in
Read MoreBy Chris Topazi – We have discussed OFDMA, its benefits and some of the lessons learned in our deployments. In this article, we seek to address a question that we are asked quite frequently from our leadership and from our field personnel—why does OFDMA appear to be more sensitive to noise than our traditional ATDMA upstream
Read MoreBy Keith Perry – One of the caveats of rolling out new technology in a service provider environment is that you must accommodate older technology, until such point where it’s no longer needed. Unfortunately, you may have no control over the time frame required to reach the expiration point
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By Chris Topazi – Here at Cox, we have converted thousands of DAA based RPD nodes to mid-split upstream with OFDMA. Previously, we had discussed the impact of over-the-air television broadcasters in this band, and what we planned to do about those issues.
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By Brian Lee – Keep in mind that as technology changes, you’re learning together with your more-experienced colleagues, and some of your fresh perspective
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By Chris Topazi – The alternative of allowing the customer to try and blast through this ingress will result in uncorrectable FEC codewords, and hence packet loss, when trying to use those minislots that are impaired.
Read MoreBy Kraig Neese – The benefits of the new test racks continue to grow, making troubleshooting and maintaining an R-PHY environment more efficient. There is plenty more to learn as we grow our ability to monitor and troubleshoot these new DAA networks. We continue to push more functions to the remote edges of our networks and these new methods will need to adapt as we grow.
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By Alan Skinner – Deploying extended CIN does take a bit of extra work. For example, since the CIN spans multiple sites which typically have redundant transport paths between them
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