GR 324 CORE : ISSUE 1

1. Introduction
   1.1 Purpose and Scope
   1.2 Organization
   1.3 Requirements Terminology
   1.4 Requirement Labeling Conventions
   1.5 Sample Size
2. General Information
   2.1 General Product Description
   2.2 Operational Compatibility With Test Systems
   2.3 Test Criteria Discussion
3. Detailed Requirements
   3.1 Materials
   3.2 Mechanical Safety - Construction
   3.3 Documentation
   3.4 Marketing, Packaging, and Shipping
   3.5 Quality Assurance
   3.6 Reliability
   3.7 Electrical
   3.8 Mechanical Requirement of Conductors
4. Environmental Requirements
References
Glossary
List of Figures
2-1 MTU General Configuration
2-2 Normally-Open Type MTU
2-3 Simplified Local Test Desk Arrangement
3-1 Return Loss Measurement
3-2 Insertion Loss Measurement
3-3 Longitudinal-to-Metallic Balance (Performance)
3-4 Message Circuit Noise Measurement
3-5 Ringing Range
3-6 Dial Pulse Distortion
3-7 Ring-Trip Test Circuit
3-8 DC Series Voltage Drop
3-9 Service Request Response Test Configuration
3-10 AC Impedance Testing Configuration (200 less than or equal to f
     less than or equal to 3400 Hz)
3-11 On-Hook Ringer Pulsing
3-12 Idle-State Voltage
3-13 Automated Test System Compatibility
3-14 Distinctive Termination
3-15 Negative Resistance Verification
List of Tables
3-1 Ac Impedance of an MTU in Test Mode Idle State
3-2 Automated Test System Compatibility
3-3 MTU Termination Tests

Identifies generic requirements for maintenance termination units that shall be met in order to meet the typical need of a Bell operating company environment.