... main control board)8*E1 per E1 board, maximum occupy 8 slotsVoice:16*FXS,16*FXO,8*E&M,8*MS,8*MSA,4*HFA ... V.24,10*X.50,4*RS485,4*RS422,8*G.703,4*UIF(ISDN 2B+D),4* ... 10Base-T optionalSupport work under standard DXC mode(E1 Digital Cross Connection)Features:Ability to incept sixty- ... network array without hinder;Centralization and Diversion function: E1 branch signals from different source can be led into ...