Document Outline

• General Information
  • SCOPE
  • DESCRIPTION
    • GENERAL
  • ASSEMBLIES
    • MAIN BOARD
      • Telephone Interface
      • Handset/Speaker Interface
      • Radio Interface
      • DSP Module
      • CPU Section
      • Power Supply Section
    • FRONT PANEL SWITCH ASSEMBLIES
    • OPTIONS INTERFACE BOARD
    • OPTIONS
• Installation
  • GENERAL
  • UNPACKING AND INSPECTION
  • RESHIPMENT OF EQUIPMENT
  • INSTALLATION OVERVIEW
  • INSTALLATION CONSIDERATIONS
    • FCC PART 68 REGULATIONS
  • POWER REQUIREMENTS
  • INPUT POWER SELECTION
    • LINE VOLTAGE SELECTION
    • DC INPUT POWER SELECTION
  • CONFIGURING THE RTU-292
    • PROGRAMMING MODE SETUP PARAMETERS
    • SETTING TELEPHONE SEND AND RECEIVE LEVELS
    • VOX HANGTIME
    • VOX SENSITIVITY
    • BALANCED/UNBALANCED RADIO INTERFACE
    • RX LINE INPUT IMPEDANCE
    • DIAL MODE
    • TELEPHONE RING VOLUME
    • FULL/HALF DUPLEX RADIO
    • SERIAL PORT BAUD RATE
    • RADIO CONTROL MODE
    • PASSWORD PROTECTION
    • VOICE PROMPTS
    • LOCAL PHONE / LOCAL PHONE RING-THROUGH
    • TRANSMIT LEVEL SET-UP MODE
    • MISCELLANEOUS JUMPERS
  • INTERCONNECT INFORMATION
    • TELEPHONE CONNECTION
    • RADIO CONNECTION
    • HANDSET CONNECTOR
    • TERMINAL BLOCK
    • RS-232 CONNECTION
  • AUDIO LEVEL SETUP AND ADJUSTMENTS
    • SETTING THE TRANSMIT LEVEL
    • SETTING THE RECEIVE LEVEL
  • INSTALLATION CHECKLIST
  • OPTIONS INSTALLATION AND CONFIGURATION
• Operation
  • GENERAL
  • FRONT PANEL CONTROLS, INDICATORS AND CONNECTORS
    • MAIN POWER SWITCH
    • HEADPHONE JACK
    • HANDSET JACK
    • HANDSET
    • SPEAKER
    • KEYPAD
    • SPEAKER VOLUME CONTROL
    • PHONES VOLUME CONTROL
    • TEL LINE BUTTONS
    • HANDSET BUTTONS
    • SPEAKER BUTTONS
    • TEL VOX
    • AUTO ANS BUTTON
    • AUDIBLE RING BUTTON
    • KEY PUSHBUTTON
    • PEAK LED
  • REAR PANEL CONNECTORS
    • P1 RADIO CONNECTOR
    • J1 TEL LINE
    • TERMINAL BLOCK
    • J2 LOCAL PHONE CONNECTOR
    • P2 RS-232 CONNECTOR
    • DC INPUT TERMINAL BLOCK
    • P1 AC POWER CONNECTOR
  • OPERATION
    • OPERATION OVERVIEW
    • USE OF THE RTU-292 SPEAKER TO MONITOR AUDIO
    • PLACING A TELEPHONE CALL
    • RECEIVING A TELEPHONE CALL
    • PUTTING A TELEPHONE CALL ON HOLD
    • USING THE HANDSET WITH THE RADIO
    • CONNECTING THE RADIO TO THE TELEPHONE LINE
      • Initial Adaptation
      • CONTINUOUS ADAPTATION
    • MANUAL PHONE PATCH PROCEDURE
    • TRANSMITTER KEYING, HALF DUPLEX SYSTEM
    • TRANSMITTER KEYING, FULL DUPLEX SYSTEM
  • REMOTE KEY
  • SELF TEST
  • AUTOMATED OPERATION
    • TONE PROMPTS
      • Positive Acknowledge (ACK)
      • Negative Acknowledge (ERROR)
      • Waiting For Input (QUERY)
      • Radio Is Keyed (KEYED)
      • Radio Is Unkeyed (UNKEYED)
      • Disconnecting (DISCONNECT)
    • VOICE PROMPTS
    • CALLING THE RTU-292 VIA THE OUTSIDE LINE
      • The Caller Dials The RTU-292
      • The Caller Enters The Password (if enabled)
      • The RTU-292 Adapts To The Phone Line
      • The RTU-292 Enters the COMMAND Mode
    • PLACING A CALL IN THE COMMAND MODE:
    • TERMINATING A CALL:
    • DTMF CONTROL COMMANDS
      • OPERATING THE RTU-292 FROM THE FRONT PANEL KEYPAD
    • RTU-292 PASSWORD PROTECTION
    • INACTIVITY DISCONNECT TIMER
    • CALLING TIMER
    • USING THE RTU-292 SPEED DIAL FEATURE
      • Programming the Speed Dial Directory
      • Using the Speed Dial Feature
    • OPTIONAL 4 WIRE OPERATION
  • FACTORY RESET
  • SPEED DIAL RESET
• RTU-292 Theory Of Operation
  • GENERAL
  • FRONT PANEL BUTTONS AND INDICATORS
  • MAIN BOARD
    • AUDIO BUS ARRANGEMENT
    • TELEPHONE INTERFACE CIRCUITS
      • Telephone Send Circuits
      • Telephone Receive Circuits
      • Ring Detector and Tone Ringer
    • RADIO INTERFACE CIRCUITS
      • Receiver Input Amplifier
      • Transmitter Audio Output
      • Keying Circuits
      • DTMF Detector
      • FSK Modem
    • HANDSET/ SPEAKER INTERFACE
      • Microphone Circuit
      • Speaker and Headphone Circuits
    • DSP MODULE
    • DSP SOFTWARE
      • Adaptive Hybrid
      • Noise Generator
      • Peak Detector
      • VOX
      • Audio Delay
      • DTMF Detector
      • DTMF Generator
    • POWER SUPPLY
      • AC Power Supply
      • DC Power Supply
    • CPU
    • PROMPT TONE GENERATOR
  • OPTION INTERFACE BOARD
  • VOICE PROMPT OPTION
    • SPEECH PROCESSOR
    • CONTROL PROCESSOR
    • VOICE PROMPT SOFTWARE
  • LOCAL PHONE OPTION
    • INTERFACE CIRCUITRY
    • DIAL/BUSY GENERATORS
    • LOCAL TELEPHONE LINE INTERFACE
• Remote Control Protocol
  • GENERAL
  • RS-232 REMOTE CONTROL OVERVIEW
  • COMMANDS SENT TO THE RTU-292
    • NULL Command
    • Auto Answer Command
    • Audible Ring Command
    • Date Command
    • Dial Command
    • Disconnect Command
    • DTMF Command
    • Handset Phone Command
    • Handset Radio Command
    • Speaker Phone Command
    • Speaker Radio Command
    • Speed Dial Command
    • Tel-Line Phone Command
    • Tel-Line Radio Command
    • Time Command
    • Software Version Command
  • STATUS RETURNED FROM THE RTU-292
    • NULL Response
    • Auto Answer Response
    • Call Starting Response
    • Dial Response
    • Disconnect Response
    • DTMF Response
    • Elapsed Time Response
    • Handset Phone Response
    • Handset Radio Response
    • Speaker Phone Response
    • Speaker Radio Response
    • Speed Dial Response
    • Tel-Line Phone Response
    • Tel-Line Radio Response
    • Time/Date Response
    • Version Response
  • CALL PROGRESS RESPONSES FROM THE RTU-292
  • RESPONSE ERROR CODES
• Maintenance and Repair
  • GENERAL
  • PREVENTIVE MAINTENANCE
  • REPAIR OR REPLACEMENT
    • GENERAL PRECAUTIONS AND NOTES
  • ALIGNMENT
  • PERFORMANCE TESTING
    • TEST EQUIPMENT REQUIRED
    • HYBRID BALANCE MEASUREMENT
      • Main Hybrid Test Procedure
      • Alternate Hybrid Test Procedure
    • VOX SENSITIVITY MEASUREMENT
      • VOX Test Procedure
• RTU-292 Options
  • GENERAL
    • Special Software Versions
  • VOICE PROMPT OPTION
    • INSTALLATION AND CONFIGURATION
    • OPERATION
  • LOCAL PHONE OPTION
    • LOCAL PHONE OPTION INSTALLATION AND CONFIGURATION
    • LOCAL PHONE OPTION OPERATION
  • VMM-100 OPTION
    • VMM-100 Hardware
      • VMM-100 DSP Section
      • VMM-100 Analog Interface
    • VMM-100 Software
      • VMR Algorithm
      • Noise Reduction Algorithm
    • VMM-100 INSTALLATION AND CONFIGURATION
  • DTMF ACCESS OPTION
    • Initiate Call Via Attention Signal
    • RTU-292 Response to Attention Signal
    • Radio Caller Provides Calling Directions
    • RTU-292 Plays Back Phone Number & Prompts for Confirmation
    • RTU-292 Places the Call
    • After the Call Begins
  • SQUELCH BREAK ACCESS OPTION
    • Initiate Call Via Attention Signal
    • RTU-292 Response to Attention Signal
    • RTU-292 Prompts for Confirmation
    • RTU-292 Places the Call
    • After the Call Begins
  • THE CALL LOGGING OPTION
    • Checking The Time And Date
    • Setting The Time
    • Setting The Date
    • Call Logging
  • RADIO CONTROL OPTION
    • CONTROLLING THE RADIO VIA THE RTU-292 FRONT PANEL KEYPAD
• SCHEMATIC DIAGRAMS
  • GENERAL
• Index