IPTV, Internet Protocol television, is a system through which television services are delivered using the Internet protocol suite over a packet– (https://en.wikipedia.org/wiki/Packet_switching)switched network such as a LAN or the Internet, instead of being delivered through traditional terrestrial, satellite signal, and cable television formats.

No, you will connect IPTV servers via Internet and you don’t need dish and satellite equipments.

We support all kind of devices such as:
MAG
Android Smart Phone
Android Boxes
Enigma2
DreamBox, Vu+, …
PC
VLC, Kodi/XBMC, …
Smart TV

No, you can’t. IPTV account can be installed in more than one device, but only 1 stream will work at a same time.(only 1 connection is allowed at a same time)