64*E1 integrated data access device,FXS,FXO,E&M,MS,MSA,HFA optional;V.35, ... ;Powerful time slots expansion DXC function with a 2048×2048 exchange network array without hinder;Centralization and Diversion function: E1 branch ... interface board can be inserted into any slot of the device at any sequence or types;SNMP Network Management 64*E1 ...