The ION 4xT1/E1/J1 copper to fiber network interface device (NID) provides a solution for those users that need to extend multiple T1/E1 connections and 10/100Mbps Ethernet over fiber. The ION 4xT1/E1/J1 supports Small Form Pluggable (SFP) transceivers to support a variety of fiber types, distances and wavelengths to provide maximum flexibility across a variety of network topologies. The use of Coarse Wave Division Multiplexing (CWDM) SFPs can be utilized to further increase the bandwidth capacity of the fiber infrastructure. The ION 4xT1/E1/J1 NID must be used in pairs. A typical installation will include a chassis card installed in the ION Platform locally and a standalone device installed at the remote location. - 4 x RJ-48 copper interfaces,1 fiber interface (fixed or SFP), 2 SFP ports on C6121-1040 model, 1 RJ-45 10/100Mbps Ethernet port - AutoCross (auto MDI/MDI-X on Ethernet port) - Pause (Flow Control) on Ethernet port) - Loopback via test set - Local and remote loopbacks - LEDs for device status and troubleshooting - Settings for line code, line build out, loopbacks and Alarm Indication Signal (AIS) - Access to complete status and configuration on local and remote device - Remote firmware upgrade - Remote management - Extended operating temperature