Cisco NM-30DM 30 PORT DIGITAL MODEM NETWORK MODULE

Has 5 Mica Modem ModulesEach network module supports up to five modem modules, each of which supports six modems, for a total capacity of 30 digital modems per network module.The Cisco 3620 platform supports one PRI module, the Cisco 3640 chassis supports one or two PRI modules, for maximum capacity of 60 modems per chassis using the BRI Network Module in a 3640, up to 16 BRI ports can be supported.