Cisco - DSU/CSU - plug-in module - ISDN PRI T1 - 1.544 Mbps - T-1 - 4 digital port(s)

The Quad T1/PRI card without serial interfaces includes four RJ-45 ports and supports both MICA and Microcom modems. A 10-position rotary switch allows the user to choose which of the four ports is selected for monitoring through the Bantam jacks (TXMON, TXIN, TXOUT and RXMON, RXIN, RXOUT). The LED labeled MON at each port lights to indicate that port has been selected for monitoring