Yeah, there are three hosts + the Jonas Host that form the backbone of this private little matrix. All the external processing power your gear needs is divided over those hosts. The logic behind this is that this is an experimental weapons lab. So they want to test their gears wireless capability without the risk of being spotted.
Now that one host doesn't act like a jammer and spambot all standard capability will be restored - within the confines of the facility.
Not all gear is necessarily slaved to one of the four hosts - especially the new experimental stuff - but for example all locks, cameras, sensors, attack drones and sentry guns are slaved to the security host (Tartaros). Blue Hades is the Host responsible for personal, lifesupport, waste disposal, i.e everything to do with HR and facility management.
The intruder soldiers didn't use any wireless boni as far as you could tell, so they probably had planned to keep the jamming operational for the whole duration of their actions
As long as you are not within a host the only thing dangerous to you in this matrix could be an agent or an enemy decker.