Cisco NM-30DM

The digital modem network modules significantly enhance the dial access flexibility and scalability of the Cisco 3600 platform series. Each network module supports up to 30 digital modems. The digital modem network modules use either the single or dual T1/E1 network modules to offer support for up to 60 remote modem users (using two NM-DM network modules), at speeds up to 56 Kbps.