The ADTRAN DSU IV ESP is an all-rate data service/channel service unit (DSU/CSU) with an integral SNMP (simple network management protocol) which provides access to traditional dedicated point-to-point, multi-point or frame relay services and an interface between digital data service (DDS) or 4-wire Switched 56 and the customer's data terminal equipment (DTE).

Max Transfer Rate: 64 Kbps
Protocols & Specifications: ITU V.25bis
Digital Ports Qty: 1
Features: Auto answer, auto synchronization, auto redial
Expansion Slots Total (Free): 2
Interfaces: 2 x modem - RJ-48S - 2
Connections: 2 x modem - RS-232 - 25 pin D-Sub (DB-25) 1 x modem - V.35 - 25 pin D-Sub (DB-25)
Power Device: Power supply - integrated
Voltage Required: AC 110 V ± 10% ( 60 Hz )
Power Consumption Operational: 5 Watt

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