Used Cisco WAN Modem Network Module

Part # NM-24DM

Product Description: Cisco 3600, 3700, 3800 Series - 24-Port Digital Modem Network Module.

About the Cisco 3600 Series: "Modular high-density router for dial-access or router-to-router traffic. Supports ISDN, serial, channelized T1, digital modems, and ATM links. Also supports voice/fax and Frame Relay" (Cisco A Beginner's Guide Third Edition by Velte & Velte).

About the Cisco 3700 Series: "Modular routers, targeted at branch offices. Supports Frame Relay, ISDN, LL, X.25, ATM, fractional T1/E1, xDSL, T3/E3, HSSI WAN protocols" (Cisco A Beginner's Guide Third Edition by Velte & Velte).

Cisco 3600 WAN Modem Network Modules
Cisco 3700 WAN Modem Network Module
Cisco 3800 WAN Digital Modem Network Modules
Cisco Routers - Part Numbers Listed Alphabetically