Subspace relay network

A subspace relay network or subspace communications network (short subspace com net) was a communications system used by many cultures for long-range data transfer.

The Federation operated such a network, stemming from the initial deployment of subspace amplifiers by the Earth Starfleet starship Enterprise. 

In 2369, Commander Benjamin Sisko had a map of sector 22757 from the subspace com net displayed on his desktop monitor. 

The Hirogen controlled a large network of similar stations, which stretched across the Delta Quadrant, and reached into Alpha and Beta Quadrants as well.