connect (up) with someone or something
1. to form an association with someone or a group. (The up is informal.) Let's connect up with some other people and form an organization through which we can express our views. We need to connect with like-minded people that can help us with our problems.
2. to meet with someone or a group; to communicate with someone or a group, especially over the telephone. I tried to connect up with Bob over the phone, but I could never reach him. We could not connect with the council to discuss these matters.