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Cisco Channelized T1/E1 and ISDN PRI Modules
Product Overview
The Cisco
®
Channelized T1/E1 and ISDN PRI High-Speed WAN Modules combine multiple T1/E1
WAN connectivity—Channelized T1/E1 and ISDN Primary Rate Interface (PRI), in the same card.
Applications include fractional or full T1/E1 WAN connectivity, ISDN PRI for primary WAN link or
WAN backup, and dial access aggregation. With flexible WAN connectivity options, together with
integrated routing, security, voice, and wireless capabilities, Cisco Integrated Services Routers can
meet every need of enterprise-class branch offices today and in the future. Three versions are
available, 1- and 2-port cards (Figure 1) in a single-wide high-speed WAN interface card (HWIC),
and a 8-port cards (Figure 2) 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
modules can be used in T1 or E1 networks, selectable by software configuration. The integrated
channel service unit/data service unit (CSU/DSU) function allows customers to consolidate
customer premises equipment (CPE). The modules support balanced and unbalanced E1
connectivity and conform to the G.703 and G.704 standards for unframed and framed E1 modes.
The Channelized T1/E1 and ISDN PRI modules work with the digital modem module in the Cisco
2800 and 3800 Series Routers to provide V.90- and V.92-compliant digital dial access
aggregation.
The 1- and 2-port Channelized T1/E1 and ISDN PRI HWICs are updated versions of the E1/T1
ISDN PRI network modules, with the same functions and performance in a compact form factor of
HWIC. You can save the network module slots for other LAN/WAN connectivity, and your
deployment flexibility is greatly enhanced. The 8-port Channelized T1/E1 and ISDN PRI network
module expands the scalability of T1/E1 ports on the Cisco 3800 Series. You can use the
increased port densities for small-scale WAN aggregation in the regional offices.
Figure 1. 1- and 2-Port Channelized T1/E1 and ISDN PRI High-Speed WAN Interface Card
Figure 2. 8-Port Channelized T1/E1 and ISDN PRI Network Module