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November/December 2005, Volume 11, Number 11-12
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| Reconfigurable Optical Add/Drop Multiplexers—Testing Issues
In an effort to minimize expenses, many service providers are now using ROADMs in their networks instead of optical-electrical-optical converters. Like with many cost-saving replacement solutions, it may sometimes be necessary to compromise certain aspects or compensate for certain shortcomings.
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Internet Connection Validation Using the LANPAL100 Network Tester
Internet connectivity is extremely important in both the residential and enterprise/central office market space. This article explains how to validate connectivity and pinpoint any problems using the LANPAL100 Network Tester in four specific applications.
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| Detailed Ethernet Frame Analysis with New EXpertNPA Software
In addition to the usual network tests, service providers need to monitor live traffic to perform higher-layer protocol analyses. EXFO’s latest Ethernet tool—the EXpertNPA software—was designed specifically for this purpose. This article covers its main applications and how it can help service providers in each of those situations.
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Selecting the Right OTDR
The OTDR is a critical tool in the characterization and certification of fiber-optic links (multimode and singlemode LAN/Ethernet). Selecting a unit simply based on overall performance and price may cause problems if it is inappropriate for your application.
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