Call up and Give a ring

Call up verb - Get or try to get into communication (with someone) by telephone.

Give a ring and call up are semantically related in telephone topic. In some cases you can use "Give a ring" instead a verb "Call up", when it comes to topics like communicate through telephone system.

Call up and give a ring are semantically related in telephone topic. You can use "Call up" instead a verb phrase "Give a ring", if it concerns topics such as communicate through telephone system.