MOS – Mean Opinion Score Mean Opinion Score (MOS) is a measure of voice quality that has been used in telephony for decades to assess human users’ opinions of call quality. The test is widely used in ...

“Our new VoIP PBX is now established, everything seems to promise it will be durable; but, in this world, nothing is certain except death and faxes.” — Benjamin Franklin Well, maybe I’m paraphrasing h...