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ESU LT

FULL FEATURED E1/FE1 DSU/CSU

The ADTRAN ESU LT is a low cost, full-featured E1/FE1 Data Service/Channel Service Unit (DSU/CSU). The ESU LT provides an interface between E1 or Fractional E1 service and the end users Data Terminal Equipment (DTE) for applications such as LAN to LAN bridging, Frame Relay circuit termination and videoconferencing. The ESU LT provides access to traditional dedicated point-to-point E1 services as well as network termination for Frame Relay.

Housed in a compact, durable plastic housing the ESU LT supports synchronous data rates from 56 kbps to 2.048 Mbps at Nx56 or Nx64 kbps. A single DB-25 DTE physical interface, supporting V.35, V.36, X.21/V.11 or EIA-530, provides a connection to the end users DTE equipment. Adapter cables are available.

For configuration and testing, the ESU LT provides the capability to control a remote ESU LT using 8 kbps of the data traffic. The in-band control channel is used on an as needed basis and is automatically controlled by the ESU LT.

The ESU LT responds to standard local and remote loopback commands from the telephone company central office. In addition, the user has several built-in test capabilities including V.54 remote loopback and 511 BERT test patterns. Complete configuration and performance data is available from the front panel keypad and two-line by 16 character LCD display. For additional configuration and monitoring options, the ESU LT supports VT 100 terminal configuration and control mode which is available through the control port. For direct serial connections or for remote devices, optional Windows® based PC Management is available through the comprehensive, easy to use T-Watch PRO™ software package.

Features

	Single DB-25 DTE interface supporting V.35, V.36, X.21/V.11 or EIA-530
	Nx56 or Nx64 operation for data rates to 2.048 Mbps
	G.704 framing support
	HDB3 line coding
	Front panel, LCD for configuration and monitoring
	PC based configuration support via T-Watch PRO™ software
	Remote ESU LT configuration via 8k in-band & T-Watch PRO™ software
	Local and remote loopback capability
	Standard 5 year warranty

ESU LT APPLICATION EXAMPLE

ESU LT REAR PANEL

Product Specifications

NETWORK INTERFACE

Line Rate

E1-FE1 (2.048 Mbps)

Electrical

G.703

Physical Interface

120-ohm DB15

Framing

G.704

Line Code

HDB3

Input Signal

0 to 30dB

E1 Transmit Timing

	Loop Timed
	Internal
	DTE

DTE INTERFACE

Data Rate

Nx56 or Nx64 kbps (N=1 to 30)

Electrical and Mechanical

	Electrical: V.35, V.36, X.21/V.11 or EIA-530
	Physical Interface: DB25 connector
	TS0 Assignment: User Selectable
	DTE Transmit Clock: Automatic

MANAGEMENT

Control In / Control Out Ports

	Interface: EIA-232, PC Serial Port or Modem
	Physical Connector: RJ-45, modular 8-pin
	VT 100 terminal configuration and control
	Optional Windows® based PC Management via T-Watch PRO? software package

TESTING AND TROUBLESHOOTING

Loopbacks

	NI Line, NI Payload, and DTE Bi-directional Loopback
	Local: Payload/Line Loopback, DTE Loopback
	Remote: Payload/Line Loopback, V.54 (DTE) Loopback
	Network: CSU and DSU loopbacks
	Test Pattern generator and detector
	QRSS and 511 (selectable TS0s)
	All 0s and all 1s (transmit only)

Performance Monitoring

	Performance Statistics based on G.821
	Reports: NI information stored for last 24 hours (15-minute increments)

ENVIRONMENT

Operating Temperature

0° to 50°C, (32° to 122°F)

Storage Temperature

20° to 70°C, (4 to 158°F)

Relative Humidity

Up to 95%, non-condensing

PHYSICAL

	Dimensions: 3.81cm (1.5") H, 15.88cm (6.25") D, 22.86cm (9.0") W
	Weight: .91kg (2 lbs)
	Power: 90-250 VAC, 50/60Hz

AGENCY APPROVALS

UL 1950, IEC 950, CISPR 22, FCC Part 15 (Class A), and CE Mark

Product Includes: One 8-pin to 8-pin modular cable, modular to female DB-25 adapter and User Manual , ESU LT E1 DSU/CSU

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.

Ordering Information

	ESU LT - 1200410L1
	V.35 Female Adapter Cable - 1200285L1
	X.21/V.11 Adapter Cable - 1200282L1
	DB-15 to BNC Adapter - 1200209L1

Download this brochure in pdf format.

Immediate price quote - Call 727-398-5252

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Last modified: November 07, 2007