[dv35z]

Thanks for replying! When I had the Avaya phone, in most all locations & conditions, if there was decent (e.g. a non-tech person's home in latin america, an apartment in London, a residential cable modem in turkey) - the call was crystal clear. Meanwhile, Skype, Google Voice, Viber, and even WebEx sounded cloudy. I always wanted to know what the "secret sauce" was that allowed this device (or the company-hosted server behind it) to have this quality.

Regarding Ooma, I have the portable handset here: http://www.ooma.com/telo/

And I bought the headset (which connects to the base station as another phone, rather TO the phone. The process to simply dial a number and use the headset is comically complicated to "join" the calls...)

If you have any specific advice for this setup, I'd be appreciative. Likewise, if you have other recommendations for solutions, I'm all ears. Thanks again!