64*E1 integrated data access device,FXS,FXO,E&M,MS, ... ,RS485,RS422,G.703,UIF(ISDN 2B+D) 10Base-T 64*E1Total 16*slot-2*slot for main control board(support ... the device at any sequence or types;SNMP Network Management 64*E1 Integrated Data Access Device DXC comprssion E1