64*E1 integrated data access device,FXS,FXO,E&M,MS,MSA,HFA optional;V.35, ... ),4*10Base-T optionalSupport work under standard DXC mode(E1 Digital Cross Connection)Features:Ability to incept sixty-four E1 signals ... interface board can be inserted into any slot of the device at any sequence or types;SNMP Network Management 64*E1 ...