Excentis staff members regularly write on technical and less technical topics in our different business areas. We hope you will find some useful gems of information here. If you have any suggestions we love to hear from you on blog@excentis.com.

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Have you ever tried to plug an optic SFP+ transceiver into an SFP+ port to discover that the connection didn’t work, i.e. traffic was very slow or there was no data transmission at all? Did you manage to diagnose the problem and find a resolution? There are several possible reasons for failure. We’ve listed the five most common ones.
The first step after installing a new network is often to determine its maximum throughput. At the DOCSIS 3.1 interop that we organized a couple of months ago, several participants stayed after to get the highest throughput on their modems. When new lab equipment is delivered to a customer, it's much the same. In this post, I want to give a bit of back story on the throughput test that we've added to the 2.7.0 ByteBlower release. You'll also get a sneak peek at what is coming in the next release.
From an engineering point of view, DOCSIS 3.1 protocol messages are pretty mind-blowing. They travel almost at the speed of light through your coaxial cable – all to support your online life. Imagine pausing time and taking a peek at the conversation between the cable modem (CM) and the cable modem termination system (CMTS). Wait, we can! Let’s have a look using the XRA-31 real-time RF analyzer that we will be launching soon.
As demonstrated during our interop event , Remote PHY Devices (RPD) are reaching maturity. Contrary to other MSO (operator) core equipment, an RPD may be installed in an untrusted part of the MSO’s network. This requires special attention from a security point of view. This blogpost explains how to update the RPD’s software in a secure way.
The Remote PHY architecture helps cable operators meet the soaring demand for bandwidth and IP video while making networks less complex. Here’s how.