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Vectel
Support/Landline and VoIP

Callers complain about choppiness, how do I measure quality?

MOS score (1 to 5) expresses call quality. Jitter buffer and packet loss matter most.

Try this first

  1. 1MOS above 4.0 is good, under 3.5 everyone notices
  2. 2PBX or SBC logs jitter, latency and packet loss per call
  3. 3Tune jitter buffer (adaptive or fixed) for variable networks
  4. 4Packet loss above 1 percent is the problem, not the codec

When to bring us in

MOS fine but customer complains? Headset acoustics or underpowered PoE phone.

See also

None of the above fits?

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