64*E1 integrated data access device,FXS,FXO,E&M,MS,MSA,HFA optional;V. ... ,G.703,UIF(ISDN 2B+D) 10Base-T 64*E1Total 16*slot-2*slot for main control board(support backup main ... )8*E1 per E1 board, maximum occupy 8 slotsVoice:16*FXS,16*FXO,8*E&M,8*MS,8*MSA,4*HFA ... sequence or types;SNMP Network Management 64*E1 Integrated Data Access Device DXC comprssion E1