Shared Extension is when a group of agents has one and the same extension line. During the incoming call the phone will ring at several agents simultaneously.
Mirrored Extensions is when you have one and the same extension line on several phones, in example, in the office, at home and on the cell phone. So when someone calls your extension all you phone sets sharing the same extension will ring.
To use Switzernet, nothing is more simple: you just need a highspeed Internet connection, ADSL or cable, and one of our handsets. Plug it to Internet and that