Home > TCA 4100 Telephony Conformance Analyzer > Specifications > Main tests
TCA 4100
TELEPHONY CONFORMANCE ANALYZER
SPECIFICATIONS
Main Tests
Acoustics and Telephonometry Sending and Receiving Sensitivity/ frequency response
Sending and Receiving Loudness Rating (SLR, ROLR, RLR)
Receive Volume Control
Sending and Receiving Linearity
Sending and Receiving Distortion
Sending and Receiving Noise
Sidetone and Sidetone Masking Rating (STMR)
Sidetone delay
Sending and Receiving Delay
Spectrum Analysis with stimulus
Sound Pressure Level (SPL)
Instability and Howling
Echo return loss
Terminal weighted coupling loss single talk & double talk
(TCLwst & TCLwdt)
Acoustic shock protection
Ambient Noise Rejection
Voice Quality Testing of handset and hands-free terminals (see
Voice Quality Testing)
Hearing Aid Compatibility Magnetic field intensity
Induced voltage frequency response
Hearing aid compatibility volume control
Voice over IP Acoustics and telephonometry tests of handset and handsfree VoIP terminals (see Acoustics and Telephonometry) Voice Quality Testing (See Voice Quality Testing)
VoIP spectrum analysis and signal generation
VoIP signaling analysis
Call simulation and analysis of SIP and H.323
Programmable Call, Answer, Disconnect
Playback and recording of .wav files
Programmable received event masks and if / then / go to
conditions for flow control of the simulation execution and
verdict setting
Programmable user messages, user verdicts and remote
commands (for EUT automatic operation)
Pre-defined and user defined database of signals and
encodings
Through transmission tests 2
Audio and Voice Frequency Testing Single port (referenced to pre-recorded signals e.g. on MP3 players) and dual port measurements over the following transmit - receive ports:
audio, analog (FXS), acoustic (mouth or ear
simulator),
VoIP
Including:
Level
Frequency Response
THD+N
Phase 4
Crosstalk
Signal-to-Noise Ratio
Jitter 4
Voice Quality Testing PESQ (Perceptual Evaluation of Speech Quality) testing over a combination of the following TCA transmit - receive ports:
analog (FXS), acoustic (mouth or ear
simulator),VoIP with on-line analysis and
recording to . wav file(s)
Off-line analysis of degraded vs reference .wav files
Including the following measurements:
PESQ MOS per ITU-T P.862 and MOS LQO
per ITU-T P.862.1

Delay and delay jitter

Reference and degraded signal level and
loudness with aligned and non-aligned
waveforms

R factor (ITU-T G.107 e-model)
Attenuation, Loudness

AGC measurements

VAD (Voice Activity Detection) performance analysis:

Front End Clipping, Hold Over Time (Hang Over Time)

Speech dropout
Audio Quality Testing 4 PEAQ (Perceptual Evaluation of Audio Quality) testing over the TCA audio interface including the following measurements:
Objective Difference Grade (ODG)
Distortion Index (DI)
Modulation changes, loudness of distortions, Linear
distortions, Bandwidths of Signals, Frequency
of audible distortions, Noise-to-mask ratio, Detection
probability, Harmonic structure of error
TOSQA TOSQA (Telecommunication Objective Speech Quality Assessment) testing According to TOSQA (electrical measurement) and TOSQA 2001 (acoustic and electrical measurements) over a combination of the following TCA transmit - receive ports:
analog (FXS), acoustic (mouth or ear simulator),
VoIP with on-line analysis and recording to . wav
file(s) Off-line analysis of degraded vs
reference .wav files
Including the following measurements:
TOSQA value TMOS value Equipment Impairment Factor Ie Delay
POLQA POLQA MOS per ITU-T P.863
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