64*E1 Total 16*slot -2*slot for main control board(support backup main control board) -2*slot for power supply board(support backup power supply board) -12*slot for various data/voice interface(with backup main control board) or 13*slot(without backup main control board) 8*E1 per E1 board, maximum occupy 8 slots Voice:16*FXS,16*FXO,8*E&M,8*MS,8*MSA,4*HFA optional Data:4*V.35,10*V.24,10*X.50,4*RS485,4*RS422,8*G.703,4*UIF(ISDN 2B+D),4*10Base-T optional Support work under standard DXC mode(E1 Digital Cross Connection) Ability to incept sixty-four E1 signals from different direction at the same time Consummate Net management: Security, Configuration, Alarm, Malfunction and Performance management Multifarious audio and data interfaces Two wires loop audio interface (LS/LE) with opposite-pole-trigger fee-charge function and hotline telephone; Supporting U interface: V.35, V.24 and Ethernet data can be transmitted over five to seven km by the ISDN 2B+D Data interface board possessing 10Base-T Ethernet bridge which supports VLAN transparent cutting through Powerful time slots expansion DXC function with a 2048?048 exchange network array without hinder Centralization and Diversion function: E1 branch signals from different source can be led different channels of the same interface board; 1+1 Hot backup for Main Control Board and Power Supply Board to guarantee stability and reliability 2M interface board and other sub-rate interface board can be ed any slot of the device at any sequence or types SNMP Network Management