Callbox

Callboxes are objects featured in The Sims 3: Late Night. The object can be found in lobbies of any penthouses. They allow the household to invite in guest from any floor, without having to reach them.

Visiting Sim will use the callbox to ring the household, with the player having the option to buzz them in. Likewise, the player can direct an active member to call a resident, who will come down to greet the visitant Sim.