VAMs can perform a variety of network functions, including splitting, multi- plexing, and providing access within fiber networks, the most popular appli- cation today is non-intrusive monitor- ing, which lets providers proactively troubleshoot their networks without forcing a disruption of service on cus- tomers. | Look both ways before crossing the network V alue-added modules VAMs sometimes called splitter modules are finding tremendous acceptance at fiber demarcation or handoff points which are proliferating in today s collocation scenarios. Although competitive local-exchange carriers CLECs are pushing incumbent localexchange carriers ILECs to provide better service lower rates and enhanced offerings. But CLECs still rely on incumbents. Because of high startup costs staffing and logistical fiber networks from an ILEC s central office. This competition however friendly can lead to difficulty when one party needs access for network troubleshooting especially when it s not clear whose equipment is at fault. To alleviate some of this conflict the Value-added modules allow competitive carriers with collocation VAMs can perform a variety of network functions including splitting multiplexing and providing access within fiber networks the most popular application today is non-intrusive monitoring which lets providers proactively troubleshoot their networks without forcing a disruption of service on customers. The driver behind this trend is collo- agreements to non-intrusively monitor network performance. Todd Duberstein ADC Telecommunications issues many CLECs collocate equip- concept of collocation hotels has ment and hook into local-exchange become fashionable. Owned and oper- cation. Competition has never been keener in the telecommunications marketplace. In this era of deregulation and nonstop technology advances Photo 1. A value-added module housed in a fiber frame. ated by independent entities these carrier-neutral dwellings provide centraloffice floor space in a single building for many different flavors of service providers. With potentially hundreds Figure 1. Value-added modules sometimes called splitter modules are proliferating in today s collocation scenarios. Reprinted with revisions from the October 2000 edition of LIGHTWAVE Copyright 2000 by PennWell Corporation .
