Leading the Industry in Telephone Product Performance Testing

  • Idle State: FXO Port Operational Performance
    • Electrical Interface (TIA-470.210-D)
      • Impedance and Resistance
      • DC Voltage Operating Range
      • Non-Response to PSTN Line Maintenance Signals
    • Operation When First Connected to a Telephone Line (TIA-968-B)
    • Visual Message Waiting Indicator (VMWI) Reception (TIA-777-A)
    • Cross-talk Protection Performance (TIA-912-B)
  • Alerting State: FXO Port Operational Performance
    • Electrical Interface (TIA-470.210-D)
    • Ring Detection (TIA-470.220-D)
    • Auto-Answer Timing
    • Caller-ID Reception (TIA-777-A)
  • Talk State: FXO Port Operational Performance
    • Electrical Interface (TIA-470.210-D)
    • Non-Response to DC Signals
    • Parallel Phone Off-hook
    • Line State Transitions – Port Release after BYE: Message
    • FXO Port Selection for Outgoing Calls and Disconnect Timing
    • Emergency Call (911) FXO Port Takeover
    • Dialtone and Stutter Dialtone Signal Detection
    • FXO Port Speech Path Connection Delays
    • Flash Signal Generation
    • Detection of Timed Disconnect Signal (TDS)
    • Talk State Transition Interruption From Ring-Trip Delays
    • Caller-ID With Call Waiting Reception
    • Call Waiting Reception
    • Call Progress Signals Detection
    • Call Progress Signals Generation (Call state and RFC 2833)
    • Cross-talk Protection (TIA-912-B)
    • DTMF Detection and Generation
    • Speech Path (TIA-912-B)
    • Echo Control
    • Data Transmission (TIA-912-B)
  • Radio Frequency Immunity (RFI) (TIA-631-A)
  • Environmental (TIA-571-B)
    • Lightning Immunity
    • Electro-Static Discharge (ESD)
    • AC Power Variations
    • Temperature and Humidity
    • Drop Testing
    • Vibration
  • Common Mode Noise Susceptibility (Based on Bell Labs Loop Noise Survey)