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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Measuring throughput using TCP seems an easy task: just send data over a TCP session and the protocol will automatically seek the maximum network capacity for you. If you're in luck this will give you satisfying results, but what if it doesn't? Exactly which parameters should you play with to optimize your performance? Let's find out!
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With smartphones, tablets, laptops and smart TVs ruling the world, sharing and streaming content from one device to another over Wi-Fi becomes more and more important. The list of new protocols to achieve this goal is still booming. Companies are trying to convince the customer with promising terminology like Apple® AirPlay®/AirDrop®, Samsung AllShare™, Intel® WiDi, Sony® One-touch Mirroring™ and so on. But how do these protocols work; how do they relate to Wi-Fi CERTIFIED™ standards like Wi-Fi Direct®, (T)DLS® and Miracast®; and most important: what about interoperability? Let’s find out!
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While working with DOCSIS systems it is important to understand the upstream periodic ranging process. Ranging can be seen as the DOCSIS heartbeat between Cable Modem (CM) and Cable Modem Termination System (CMTS). As many people tend to struggle with the details of this process, the goal of this article is to visualize the periodic ranging process. Lets take a closer look at that ranging process – and let’s try to understand where things can go wrong during this DOCSIS heartbeat.
Rigorously testing a network device or distributed service requires complex, realistic network test environments. Linux Traffic Control (tc) with Network Emulation (netem) provides the building blocks to create an impairment node that simulates such networks. This second post of a three-part series shows which impairments are available and how they can be configured.
Will it turn out to be a marathon, or will 10 miles do this time? If understanding DOCSIS 3.0 was running 10 miles, how far will I need to run before I understand 3.1? Is the terrain rough and hilly or will it be a walk in the park?
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When cable operators offer telephony services over their networks, they do so based upon the PacketCable standards. At least, in the United States. In Europe there is EuroPacketCable. But what is the difference and what were the drivers for it? Find out in this blog post.

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