Tech Level C

Tech Level C is the technology of time-space manipulation. Hyperdrill technology allows a permanent portal to be opened between subspace and real space. Using gravity anchors a portal gate can be placed in that opening allowing passage from real space into subspace and back out.
Hyperdrill technology is also capable of distorting real space, making it a potentially destructive weapon. Fortunately the same technology can stableize real space, preventing such uses. Proper application of this technology can also prevent a Barnes-Gutierrez Hyperspace Engine from shunting into or out of subspace, though the effect is very localized.
Gravity anchors also allow the placing in subspace of beacons between the portals.
While every gate and beacon transmits to allow vehicles to locate and follow the road network along Major Route gates and beacons also have tight beam transmitters and receivers to allow broadband communication through subspace. This hypercable communication system allows effectively instantaneous interstellar communication, at least over medium distances. For example most worlds on Major Routes in a particular County have what is effectively instantaneous communication. Over extreme distances, such as 1000 light years, the delay in transmission becomes noticeable and recorded messages are more practical than live interaction.
Deliberate attempts to manipulate the time side of the space-time relationship have resulted in horrific catastrophes. Church theologians have postulated that such manipulation comes close to challenging Divine Providence and propose that dangerous temporal recoils are the result. Still every once in awhile there have been cases of Hyperdrill or even B/G engine malfunction which have resulted in disjunctive time abnormalities or even situations which have stretched the bounds of causality. Perhaps at Divine direction.