Leading the Industry in Telephone Product Performance Testing

  • Idle State: FXS Port Operational Performance (TIA-1063, TIA-464-C)
    • Transitions to the Idle State
    • Idle State Operations
    • Stopping Signal Generation Upon Entering the Idle State
    • DC Voltage and Off-hook Termination Detection
    • Immunity to Short Off-hook Terminations
    • Crosstalk Interference
    • VMWI Feature Performance
  • Alerting State: FXS Port Operational Performance (TIA-1063, TIA-464-C)
    • Alerting State Transitions
    • Alerting State Operations
    • Alerting State Timings After Receiving an INVITE: Message
    • FXS Port Ringer Drive and DC Voltage
    • Ringing Signal Timing Patterns
    • Ring Trip (Off-hook Termination) Detection
    • Caller-ID Feature Performance
  • Originating Call State: FXS Port Operational Performance (TIA-1063, TIA-464-C)
    • Originating-Call State Transitions
    • Originating-Call State Operations
    • DC Voltage and Current
    • DTMF Receiver Response Timing
    • Dial Tone or Stutter Dial Tone Generation
    • Removal of Dial Tone After DTMF Reception
    • Dialing Plan and Call Set-up Timing
    • Response to SIP Response Code Messages after INVITE:
    • Originating-Call State Time-Out Procedures
    • Disconnect Signal Detection
    • FXS Port Off-Hook Voice-band Impedance Return Loss
    • DTMF Receiver Performance
  • Talk State: FXS Port Operational Performance (TIA-1063, TIA-912-B, TIA-464-C)
    • Talk State Transitions
    • Talk State Operations
    • FXS Port DC Voltage and Current
    • FXS Port Off-Hook Voice-band Impedance Return Loss
    • Flash Signal and Disconnect Signal Detection
    • Timed Disconnect Signal Generation
    • Call Waiting Feature
    • 3-Way Calling Feature
    • Echo Cancellation
    • Reflected Echo Cancellation
    • Crosstalk Interference
    • Speech Path Performance
    • Data Transmission Performance
    • DTMF Generation Performance
  • Call Progress Signals Generation Performance (TIA-1063, TIA-464-C)
    • Dial Tone
    • Stutter Dial Tone
    • Recall Dial Tone
    • Ringback Tone
    • Busy Tone
    • Reorder Tone
    • Call Waiting Tone
    • Special Information Tone
    • Receiver Off-hook Warning Tone
    • Talk State RFC2833 Call Progress Signal Generation
  • 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)