Analog Telephone Devices

• Handset (TIA-470.110-D narrowband, TIA-470.112 wideband)
  • Receive
  • Send
  • Sidetone
  • Stability
• Speakerphones (TIA-470.120-D narrowband, TIA-470.122 wideband)
  • Receive
  • Send
  • Stability
• Headset (TIA-470.130-C narrowband, TIA-470.132 wideband)
  • Receive
  • Send
  • Sidetone
  • Stability
• Conversational Gain (TIA-4965)
  • Handset acoustic output gain
• AST Custom test procedures for parameters not covered by standards:
  • Acoustic Echo Control (AEC) characteristics (AST Custom)
  • Line Echo Control (LEC) characteristics (AST Custom)
  • Conference Speakerphone (TIA-470.120-D, AST Custom)
  • Speakerphones switching (AST Custom based on IEEE-1329)
  • Double-Talk characteristics (AST Custom)

• Perpendicular (Axial) orientation testing
• Transverse (Radial) orientation testing

• Measuring performance of:
  • Field Intensity 
  • Frequency Response
  • Distortion
  • Noise
  • Signal-to-Noise ratio

• RF Range (TIA-470.310-D)
  • Simulated Range testing procedures
  • Field range testing procedures
• Cordless Features (TIA-470.320-C)
  • Talk-time and Standby-time
  • Multi-handset
  • Indicators (low battery, out of range)
• Battery Charging Analysis (AST Custom)
  • Initial Charge Profile
  • Talk Times
    • Near Field
    • Far Field
  • Discharged (Dead) Battery Charge Profile
  • Stand-by Times

• Resistance and Impedance (TIA-470.210-F)
  • On-hook resistance and Impedance
  • Off-hook resistance and Impedance
• Alerter Acoustic and Response (TIA-470.220-E)
  • Alerter Sensitivity to Ring Signals
  • Alerter Acoustic Output
• Network Dialing and Signaling (TIA-470.230-D)
  • Pulse Dialing
  • Flash Signal
  • DTMF Dialing

• Type 1 On-hook CID
• Type 2 Off-hook CID
• VMWI
• Message Format
• CAS Detector

• Measuring reception performance for:
  • FSK signal parametrics
  • CAS signal parametrics
  • Impairments due to:
    • Noise
    • DC shifts, OSIs, Line Reversals
    • Dropouts
  • Message Format
    • Message Types
    • Parameters
    • Preamble
    • Markout
  • Exception Handling
    • Out-of-range data
    • Missing data
    • Checksum errors

• Immunity Radiated Electric Field (E-field) Interference
• Immunity Conducted Interference on Signal Leads
• Immunity Conducted Interference on Power Leads

• Measuring performance of:
  • Receive level of acoustic output
  • Transmit level of electrical output
  • Functionality during application of the interference

• Lightning Immunity
  • Signal leads
  • Power leads
• Electro-Static Discharge (ESD)
  • Air discharge
  • Direct contact discharge
  • In-direct contact discharge
• AC Power Variations
  • Transient interruptions
  • Short term voltage sags
  • long term interruptions
• Temperature and Humidity
  • Operating conditions
  • Storage conditions
• Drop Testing
  • Packaged
  • Unpackaged
• Vibration

• Signal recognition
• Immunity to noise
• Triggering events
• Inter-operability

• OGM, ICM message frequency response, output levels, input thresholds.
• Ring signal detection and rejection
• Parallel phone detection
• VOX timeout and threshold
• Network DC signal detection and rejections
• Remote access capabilities

Measuring acoustic echo control performance including:

• Acoustic echo canceller characteristics
• Double-talk characteristics
• Switching parameters
• Noise Suppression