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October-November
2006, Volume 12, Number 9 |
Benefits of VLANs and Q in QThe terms VLAN and Q in Q are common in Ethernet technology. This article defines and demystifies these terms while explaining their advantages and providing concrete examples of how they are used. [Click here for full story] |
IPTV – Living on the EdgeCarriers have developed methods to efficiently turn up IPTV services for new subscribers but, until now, portable testing solutions that would measure the quality and stability of the video have had difficulty isolating the source of any given fault. This article discusses how excess outages can be avoided, how to eliminate signal errors and how to determine the origin of faults. [Click here for full story] |
Component Manufacturing and Return Loss Testing: OCWR vs. Mandrel-Free TechniqueFor high-fiber-count components, RL testing can be a major source of inefficiency as some techniques necessitate a lot of handling. This article reviews and compares two RL measurement methods: the traditional optical continuous-wave reflectometry (OCWR) technique and a new mandrel-free technique. [Click here for full story] |
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Many network operators are seriously considering the implementation of 40 Gbit/s networks. As experts in the field of network testing, we at EXFO have added a special section to our newsletter that will be dedicated specifically to 40 Gbit/s testing issues. Join us monthly for a concise look at different aspects of the technology and what they entail. This month: The Dawn of a New EraAll testing issues that affect today’s 10 Gbit/s network will apply to tomorrow’s 40 Gbit/s networks. In addition, several new parameters may also arise and gain significance. [Click here for full story] |
