Originally Posted by
willyroo
Something from the left field...
I've given up on ATAs and moved to IP phones, in particular the Gigaset A580IP. If VOIP.MS offers g.711 codec, the Gigasets give you PSTN quality calls over VOIP.
The other advantage - they can be configured for up to 6 VOIP providers, so you can pick and choose "on the fly" dependent on need and call rates. If you lose internet, they have PSTN fallback.
On a final note, the Gigasets work on g.722 codec, which is a "HD Codec" - however YMMV on your VOIP provider.
I currently have a significant investment in dual-line phones at both my home and alternate (vacation) property, and a fairly expensive (and comfortable) DECT headset for my office desk phone at home. So far, call quality with voip.ms, the PAP2Ts, and the dual-line "POTS" phones has been superior to Vonage, with lower delay and a dramatic reduction in jitter and artifacts. In my experience, it's virtually indistinguishable from our original landline.
What benefits can I realistically expect from the Gigaset phones, other than the ones you've identified so far? Is the call quality difference really going to be that dramatic? FYI, voip.ms supports G.711U, G.729a, and gsm.