currently I use the following,

来源: 于 2012-10-05 09:47:48 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

currently I use the following,

ooma, main office, best quality.

obi110, remote office, good quality sound, free, no 911.

magicjack, home, quality depends lot on computer.

grooveIP on smartphone, ok quality over wifi, below avg quality over 3g.