Cisco Fourth-Generation T1_E1 Voice and WAN Network Interface Modules These flexible interface cards support multiple integrated data, voice, and video applications, facilitating the migration from data-only as well as circuit-switched voice and video services to a packet voice and video solution. The Cisco® Fourth-Generation 1-, 2-, 4- and 8-PortT1/E1Multiflex Trunk Voice and WAN Network Interface Modules (NIMs) support data and voice applications on the Cisco 4451-X Integrated Services Routers. 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 unparalleled 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. Part Number Number of Ports Clear-channel data MFT Packet Voice Unstructured E1 (G.703) Support Channelized Data NIM-1MFT-T1/E1 1 Yes Yes No No NIM-2MFT-T1/E1 2 Yes Yes No No NIM-4MFT-T1/E1 4 Yes Yes No No NIM-8MFT-T1/E1 8 Yes Yes No No NIM-1CE1T1-PRI 1 Yes Yes Yes Yes NIM-2CE1T1-PRI 2 Yes Yes Yes Yes NIM-8CE1T1-PRI 8 Yes Yes Yes Yes