No,it can not over TCP IP
No. The transmitter only has one RJ45 port so not more than one receiver can be connected to the transmitter.
Ethernet cable RJ45 wiring sequence: T568B (white orange, orange, white green, blue, white blue, green, white brown, brown)
We do not suggest that use cat5 cable,we suggest that you could use high quality 8 core pure copper UTP Cat6 Cable.