Voipster writes "PC Magazine has completed their in-depth review of six VoIP providers. The Editor's Choice award goes to AT&T's CallVantage service.
Unlike other reviews that consist of making a few phone calls, PC Magazine uses Minacom's PowerProbe 6000 VoIP testing equipment which provides hard numerical scores for a DTMF detection test, a fax transmission test, and two voice quality tests, PESQ (Perceptual Evaluation of Speech Quality) and VQES (Voice Quality Evaluation System).
However, after a very detailed analysis of each provider, the calculated scores don't carry much weight as they award AT&T's CallVantage the Editor's Choice and four other services strangely tie for second place."
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