The original 1080p unit suggests downstream and upstream speeds of 3.5Mbps, well exceeding most available consumer connections.

The upstream and downstream speeds can be varied by allocating either more or fewer carriers for each purpose.

This limited the upstream speed to 31.2k and prevented the always-on convenience broadband internet typically provides.

The meter then compares the difference between the upstream and downstream speeds to calculate the velocity of gas flow.

"The server requires an Internet connection with an upstream speed of 512 kb/s or higher."

Downstream speeds usually are faster than upstream speeds.

The 20 Mbit/s service reportedly supports 768 kbit/s upstream, though some users have reported seeing upstream speeds of 1 Mbit/s .

Mobile broadband and satellite Internet access providers also often have lower upstream speeds than downstream.

However, the overall download speed depends on the downstream speed of the user, the upstream speed of the server, and the network between them.

This differs greatly from downstream not only in theory and usage, but also in that upstream speeds are usually at a premium.