The folks over at
Test Your VoIP have announced that VoIP call quality has fallen over the last 18 months, with nearly 20 percent of VoIP callers experiencing unacceptable voice quality.
TestYourVoIP results from late 2004 through mid-2006 have shown a consistent decrease in overall voice quality as calculated using their proprietary the Mean Opinion Score (MOS).
MOS is an a subjective measure of voice quality that rates VoIP calls on a scale from one to five. Calls with a MOS of 3.6 or better are usually considered satisfactory, while those below it are considered unsatisfactory.
TestYourVoIP says that only 81 percent of VoIP calls tested were rated at 3.6 or better.
Linear Mode
