http://en.wikibooks.org/wiki/MagicJack/ ... -_Outbound
Since the MagicJack Plus is relatively new, I figure it might be worth posting examples of Best Management Practices for Quality of Service for MagicJack Plus.
Basic Outbound Settings:

Basic Inbound Settings: (same screen as above, just scroll down)

Classification settings:

I restricted traffic for sip and rtp to the specific MAC ID for the MagicJack Plus when connected directly to the LAN, and classified traffic for the MJ+ as the highest and also elevated them to the top (high-lighted in yellow).
I'd be grateful for feedback and suggestions.