Orbital traffic control

From Memory Alpha, the free Star Trek reference.

Orbital traffic control was a Cardassian agency that dealt with starships approaching and leaving orbit of Cardassia Prime.

In late 2375, Damar's Jem'Hadar attack ship was hailed by orbital traffic control, who asked for their security clearance. Elim Garak was able to get clearance from the agency to let them enter standard orbit. (DS9: "The Dogs of War")