Transwarp signal
A transwarp signal was a type of two-way communication signal used by the Borg.

In 2377, the Borg Queen tapped into the main computer of  using a transwarp signal. This established a real-time two-way communication between Voyager and the primary unicomplex, some half a quadrant away. ()

de: Transwarpsignal
Borg technology
Communications technology
Signal