The cisco channelized t1/e1 and isdn pri high-speed wan modulehwic-2ce1t1-pricombine multiple t1/e1 wan connectivity-channelized t1/e1 and isdn primary rate interface (pri), three versions are available, 1- and 2-port cards in a single-wide high-speed wan interface card (hwic), and a 8-port cards in a single-wide network module. the different versions help enable customers to deploy different port densities according to the needs of individual offices.
the integrated channel service unit/data service unit (csu/dsu) function allows customers to consolidate customer premises equipment (cpe). the channelized t1/e1 and isdn pri modules work with the digital modem module in the cisco 2800, 2900, 3800, and 3900 series integrated services routers to provide v.90- and v.92-compliant digital dial access aggregation.