Network for 8-bit computers TNS GC and TNS HC-08, also called "fast line". Speed 100 kbit/s, coaxial cable max 1km, Manchester.
A TNS-UPP-NET card with Z80 A SIO was produced for TNS-GC, in TNS-HC it was solved on the motherboard using Z80 SIO.
The successor to this network is TNS-NET 900 for 16-bit computers.