Document Outline

• Pub. 43004-008H
  • Confidentiality Notice
  • Computer Software Copyrights
  • Warranty
  • Table of Contents
  • Foreword
    • Scope of Manual
    • Nomenclature
    • Ordering Replacement Parts
    • Service and Repair
    • FCC Interference Warning
    • Safe Handling of CMOS Integrated Circuit Devices
  • Description
    • Features and Benefits
    • Introduction to the IPE2500A Paging Encoder/Desktop Controller
    • Desk Set Button Panel
    • Internal Microphone and Speaker
    • Handset
    • Connectors
      • Power Connector
      • Line Connector
      • Audio Accessory/RS-232 Port
    • Control Tones
    • Tone Levels
    • DTMF Decode/H.E.A.R. System Support
    • Accessories
    • Field Replacement Items
    • Programming
    • Performance Specifications
  • Operation
    • Display
    • Receiving Calls
    • Initiating Calls
      • Handset Transmit
      • Transmit From Internal (Local) Microphone
      • Transmit From Desk Microphone or Footswitch
    • Front Panel Buttons
      • Signaling Buttons
        • ALERT
        • PAGE
        • CLEAR
        • SELECT
        • UP/DOWN BUTTONS
      • PB1, PB2, PB3, and PB4 Programmable Buttons
      • VOLUME Up and VOLUME Down Buttons
      • CTL (Control) Button
      • IC (Intercom) Button
      • MONITOR Button
      • TRANSMIT Button
      • SELECT Button
      • Keypad Buttons
    • Parallel Status Operation
    • Frequency Display
    • Numeric Keypad Frequency Selection
    • PTT Function Tone (Key-up Only Function Tone)
    • Tone Supervisor Control
      • “Hard” Supervisor Control
    • Secure Operation
    • DTMF Decode
    • H.E.A.R. System Operation
    • Optional DC Control Kit
    • Optional Relay Control Kit
      • Local Control
      • E&M
      • E Lead
      • M Lead
      • E&M with Tone Control
    • Multi-line Select (IPE2500A-MLS)
      • Line Selection
      • Unselect Volume Adjustment
      • Vox-Detect Indication
    • Optional External Speaker Kit
    • Alert Tones
    • Paging
      • Entering the Paging Menu
      • Selecting the Page Type
      • Entering Capcode Digits for Paging
      • Entering a Programmed Alias
      • Sending the Page
    • 2-Tone Paging Example
      • Group Call
    • Plectron Paging
    • Direct DTMF Dialing
      • Timed Direct DTMF Dialing
      • PTT-Controlled Direct DTMF Dialing
      • Direct DTMF Dialing Using Immediate DTMF Paging
      • Audio Transmissions during Direct DTMF Dialing
      • Enabling Direct DTMF Dialing
    • RS-232 Input or PC Control
      • Paging
      • Frequency Changing
      • Custom Tones
  • Installation
    • Planning the Installation
      • Mechanical Receipt Inspection
      • Mounting
      • FCC Interference Warnings
      • Electrostatic Discharge (ESD) Protection
      • Equipment Required
      • Cable Installation Safety Considerations
      • Telephone Line Lightning and Over-Voltage Protection
    • Power Connection
    • Line Connection
      • Line Considerations - Private Circuit
      • Circuit Conditioning
    • Multi-line Select (IPE2500A-MLS)
      • Programming Changes
      • Line Configuration - Two/Four-Wire Selection
      • MLS Line Termination
      • MLS Line-Level Normalization
      • Making the Input Sensitivity Adjustment
      • Making the Input Sensitivity Adjustment
      • Making the Vox Detect Level Adjustment
      • Line Connection for MLS
    • DTMF/H.E.A.R. Functions
    • Audio Accessory/RS-232 Port
    • Microphone Sensitivity Adjustments
      • Internal Microphone
      • Handset Microphone
      • Accessory Microphone
    • Level Adjustments and Diagnostics
      • Main Diagnostics Selection
      • Programming Menu
      • Reloading Factory Defaults
      • PB1 – Line Output Adjust
      • PB2 - Line-In Sensitivity
      • PB3 – Internal Diagnostics
      • PB4 – Tone Level Adjust
      • CTL-PB1– Toggle Compressors
  • Theory of Operation
    • General Desk Set Overview
    • Receive Audio
    • Speaker Audio
    • Transmit Audio
    • Microphone Audio
    • Guard Tone Detection
    • DC Control Module (not compatible with MLS operation)
    • Relay Control Module (not compatible with MLS operation)
    • Multi-Line Select Module
    • Reset Circuit
  • CARD Suite Programming Software
    • General Description
    • Connection
    • Installation
    • Reading the Unit
    • CARD Suite Programming
      • Editing Screen
  • Troubleshooting
    • Troubleshooting the IPE2500A Desk Set
    • Fuse Replacement
  • Circuit Boards
    • 69298-001
    • 69297-003 Multi-Line Select
  • Schematics
    • Line Interface - Sheet 1
    • User Audio I/O - Sheet 2
    • Control Microprocessor I/O - Sheet 3
    • DSP Block - Sheet 4
    • Tone Key Panel - Sheet 5
    • Power Supply - Sheet 6
    • Sheet 7
    • Sheet 8 DPS PCBA
    • Multi-Line Select Sheet 1 of 4
    • Multi-Line Select Sheet 2 of 4
    • Multi-Line Select - Sheet 3 of 4
    • Multi-Line Select Sheet 4 of 4
  • Definitions & Acronyms