(A) To cancel (separable)
1. The police have decided to CALL the investigation OFF.
2. We had to CALL OFF our trip.
3. The meeting was CALLED OFF when our visitors arrived and shook our hands.
(B) To cause or tell a person or animal to stop attacking, chasing, etc (separable)
1. The dog was barking and growling at me until its owner CALLED it OFF.
2. The commander CALLED his troops OFF when the enemy retreated.
3. Please CALL your dogs OFF my brother.