Multiple-nodes (multiple media servers) can be deployed in a single outbound calling system. Agent nailups can be established with the media servers, on a one-to-one basis (an agent is nailed up to only one of the media servers at any given time). Predictive dialing can be performed by each of the media servers (dialing nodes), resulting in active (answered) calls with customers. If the active call is in a different node than a nailup for an available agent, the controller can direct the agent nailup to be moved to the node which is handling the active call (or call leg).