[Mac-telephony-list] VOIP audio quality (was Re: Apple USB modem dongle)

[Amanda Walker via List]

VOIP quality depends entirely on the underlying IP connection's  
quality.  In 2003, I replaced my Verizon POTS line with a Vonage  
account.  My audio quality went up.  In 3+ years of daily use, I've  
never had problems with it.  However, I'm using it on a commercial  
dedicated T1 (static IP, low latency, not sharing any bandwidth with  
my neighbors, not oversubscribed at the other end).  VOIP over  
switched Ethernet also works beautifully.

However, I've heard many reports that VOIP over a consumer-quality IP  
connection (which includes most "business DSL") is usually pretty  
bad, because residential IP service is usually pretty bad.


Amanda Walker