A ceasefire (or a truce) is a temporary lull or official halt during a war in which both sides agree to suspend further offensive actions against each other.
In 2152, Andorian Imperial Guard Commander Thy'lek Shran then told him that he was willing negotiate a ceasefire. His one condition was to have the Enterprise's captain, Jonathan Archer negotiate it with Ambassador Soval.(ENT episode: "Cease Fire")
In 2233, the Narada's second-in-command, Ayel, then asked the USS Kelvin's captain, Richard Robau to come aboard the Narada to discuss a cease fire.(TOS movie, novelization & comic adaptation: Star Trek)