Cisco NIM-1CE1T1-PRI= Fourth-Generation Multi-flex Trunk Voice/Channelized Data T1/E1 Module - Expansion module - T1/E1 x 1 - T-1/E-1 - for Cisco 4451-X

The Cisco Fourth-Generation 1-, 2-, 4-, and 8-Port T1/E1 Multiflex Trunk Voice and WAN Network Interface Modules (NIMs) support data and voice applications on the Cisco 4000 Integrated Services Routers (Figure 1). These cards combine WAN-interface-card (WIC), voice-interface-card (VIC), ISDN Primary Rate Interface (PRI), dial-access integration, and channelized-data (CE1T1) functions to provide superior flexibility, versatility, and investment protection through their many uses. Customers who choose to integrate data and voice in multiple steps preserve their investment in a T1/E1 WAN interface.