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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

bulletSingle DB-25 DTE interface supporting V.35, V.36, X.21/V.11 or EIA-530
bulletNx56 or Nx64 operation for data rates to 2.048 Mbps
bulletG.704 framing support
bulletHDB3 line coding
bulletFront panel, LCD for configuration and monitoring
bulletPC based configuration support via T-Watch PRO™ software
bulletRemote ESU LT configuration via 8k in-band & T-Watch PRO™ software
bulletLocal and remote loopback capability
bulletStandard 5 year warranty

ESU LT APPLICATION EXAMPLE

ESU LT REAR PANEL

Product Specifications

NETWORK INTERFACE

Line Rate

bulletE1-FE1 (2.048 Mbps)

Electrical

bulletG.703

Physical Interface

bullet120-ohm DB15

Framing

bulletG.704

Line Code

bulletHDB3

Input Signal

bullet0 to 30dB

E1 Transmit Timing

bulletLoop Timed
bulletInternal
bulletDTE

DTE INTERFACE

Data Rate

bulletNx56 or Nx64 kbps (N=1 to 30)

Electrical and Mechanical

bulletElectrical: V.35, V.36, X.21/V.11 or EIA-530
bulletPhysical Interface: DB25 connector
bulletTS0 Assignment: User Selectable
bulletDTE Transmit Clock: Automatic

MANAGEMENT

Control In / Control Out Ports

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

TESTING AND TROUBLESHOOTING

Loopbacks

bulletNI Line, NI Payload, and DTE Bi-directional Loopback
bulletLocal: Payload/Line Loopback, DTE Loopback
bulletRemote: Payload/Line Loopback, V.54 (DTE) Loopback
bulletNetwork: CSU and DSU loopbacks
bulletTest Pattern generator and detector
bulletQRSS and 511 (selectable TS0s)
bulletAll 0s and all 1s (transmit only)

Performance Monitoring

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

ENVIRONMENT

Operating Temperature

bullet0° to 50°C, (32° to 122°F)

Storage Temperature

bullet20° to 70°C, (4 to 158°F)

Relative Humidity

bulletUp to 95%, non-condensing

PHYSICAL

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

AGENCY APPROVALS

bulletUL 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

bulletESU LT - 1200410L1
bulletV.35 Female Adapter Cable - 1200285L1
bulletX.21/V.11 Adapter Cable - 1200282L1
bulletDB-15 to BNC Adapter - 1200209L1

Download this brochure in pdf format.

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Last modified: February 07, 2012