Cisco 2 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module - For Data Networking - 2 x T1/E1 NetworkFast Ethernet

With T1/E1 technology, enjoy up to 2.048Mbps (E-carrier) or 1.544Mbps (T-carrier) data transfer rate over service provider link Featuring Fast Ethernet port to enhance the data transfer rate by up to 100Mbps for connectivity Expansion Module with data networking application/usage for reliability and maximum efficiency Expansion Module offers enhanced dependability with maximum productivity