said by jerryjay: every second, on that link, I will have 1000 bit/second from the source to the receiver?
1,000,000,000 bps (1Gbps) 1000 bit/second is 1kbps is slow even by dialup modem standards (56kbps)
As shdesigns
posted assuming you are talking about Ethernet the data is only on the wire when there are frames being transmitted. The bit rate of the frame is 1Gbps (Gig Ethernet), 100Mbps (Fast Ethernet) and 10 Mbps (Ethernet). There are even faster versions of Ethernet but you get the idea.
Modern Ethernet is full duplex so the transmitter can be sending data at the same time the receiver is getting incoming data.
/tom