United Data Corporation

A Proctor Company


Long Loop Adapters


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Telephone Power Supply






Model 51300 CentraLine™ Test System

The Model 51300 CentraLine™ provides installation and maintenance technicians with the ability to quickly troubleshoot and verify facility telephone problems without the need for additional personnel or expensive portable test equipment.
CentraLine™ provides comprehensive testing of station-side networks and equipment without the need for elaborate testers. All the test features of unit can be accessed from any DTMF telephone.

The 51300 uses an Interactive Voice Response (IVR) to allow a single technician to conduct tests without the need for other personnel. With one call to CentraLine™, a technician can verify the number of a station or line, ring the phone back and check the caller ID. A suite of transmission tests can check for distortion or noise on the line and frequency roll off. A dial test checks the dial pad and speed-dial buttons, allowing the technician to quickly locate troublesome phone equipment.

Key Benefits

Single-person testing eliminates the need
for additional test personnel and equipment.

Comprehensive set of line and station tests eliminates
the need for multiple testers.

Centralized unit tests large and small enterprise
networks - no limit on number of stations.

Self diagnostics assure proper system operation.

Works with all major types of telephone switches
and station equipment.

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Typical Application

51300 Test System

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Model 51300 Specifications

    • ISDN-PRI: RJ48C
    • Loop Start Line: RJ11
    • DC Operating Voltage: 20 to 60 VDC @ 0.5 Amp
    • AC Operating Voltage: 15 VAC @ 0.5 Amp (115 VAC power supply provided)
    • Operating Temperature:  0 to 40C (32 to 104F)
    • Storage Temperature:  0 to 85C (32 to 185F)
    • Humidity: 0% to 95% (Non-Condensing)
    • Dimen: 14.0" (35.56cm) W x 1.72" (4.36cm) H
      x 8.2" (20.82cm) D
    • Wt: 4 lbs, 8 oz (2.04kg) 
    • Mounting: Wall or 19" / 23" Rack



Copyright United Data Corporation, Inc.



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