VOICE QUALITY TEST LOG
Yenra | September 7, 2026
Guide: https://yenra.com/voice-quality-measurement-software/

Use only for systems you are authorized to investigate. Use ordinary calls to
consenting colleagues or an approved test service. Obtain permission before
capturing traffic/audio; follow organizational access and retention rules.
Duplicate the blank record for each condition. Change one variable at a time.

BLANK RECORD
Date/time/time zone: ________________  Investigator: ____________________
Call ID (store securely): ___________  Test duration (seconds): __________
Endpoint, hardware, OS, app/firmware: ____________________________________
Microphone/headset/speaker and mute status: ______________________________
Network/location (wired/Wi-Fi/etc.): _____________________________________
Other workload and relevant conditions: _________________________________
Symptom / who heard it / start-end time: _________________________________
Local audio test result: ________________________________________________
Metric source/tool/version: __________  Receiver/edge/capture point: ______
Direction (sender -> receiver): _________________________________________
Codec / packet interval if known / stream identity: _____________________
Analysis interval and expected-packet method: ___________________________
Expected packets: ____  Reported missing: ____  Loss percent: ____________
Jitter mean (ms): ____  Max (ms): ____  Definition/window: _______________
Delay or RTT (ms): ____  Which one? ____  Between which points? ___________
MOS/estimate: ____  Method/model/scale: ____  Available audio levels: _____
Capture drops/sampling/coverage limitations: _____________________________
Listener report: _______________________________________________________
Changed condition relative to previous test: ____________________________
Result and remaining uncertainty: ______________________________________
Next action / owner / support ticket: ___________________________________

FICTIONAL WORKED EXAMPLE (not thresholds or provider results)
Continuous stream, 20 ms per packet, no silence suppression, full 120-second
receiver interval. Expected count = 120 * 50 = 6,000 packets.
Condition A: Wi-Fi, normal workload, missing 180/6,000 = 3.0%.
Mean/max jitter 18/72 ms. Receiver reports several missing words.
Condition B: wired, same endpoint and workload, missing 6/6,000 = 0.1%.
Mean/max jitter 3/12 ms. Receiver reports continuous speech.
Interpretation: investigate local wireless conditions next, then repeat.
The comparison does not prove a defective access point. These values are not
universal pass/fail targets. Use actual stream accounting for real tests.

ESCALATION PACKAGE
Include timestamp/time zone, call ID, direction, device and network context,
symptom interval, defined metrics and controlled-comparison results. State
which path segment you observed. Share captures only through approved channels.
After a change, repeat the original scenario and a representative busy period;
check both listener experience and the same metrics before closing the issue.

SOURCES
RTP/RTCP definitions: https://www.rfc-editor.org/rfc/rfc3550.html
Wireshark stream analysis:
https://www.wireshark.org/docs/wsug_html_chunked/ChTelRTP.html
Example platform metrics and estimated MOS:
https://www.twilio.com/docs/voice/voice-insights/call-summary
MOS reporting: https://www.itu.int/rec/T-REC-P.800.2-201607-I/en