Newbridge 90-2517-12 3600 MainStreet WAN switching Telecom System Card / Module

The Newbridge 90-2517-12 is a circuit emulation interface card from the 90-2517 series for the MainStreet Xpress 36170 ATM switch. Cards in this series carry TDM traffic across an ATM network by segmenting a constant bit rate stream into cells and reconstructing it with its original timing at the far end, which let operators move existing leased line and PBX trunk services onto an ATM backbone without changing the equipment at either end. Variants within the series differ by tributary type and electrical presentation, covering both E1 and T1 traffic and both 120 ohm balanced and 75 ohm coaxial interfaces, with the suffix identifying which combination a given card carries. Published sources do not confirm the exact tributary type of the -12 variant, so we have not stated one here. The February 2000 Alcatel acquisition of Newbridge is why cards in this series appear under both names. Tech-Star, UK-based and shipping worldwide, supplies Newbridge cards and can confirm the variant against your shelf.