The present invention provides a system and method for managing calls for a subscriber, including accessing a calling plan while the subscriber is in an existing active call with at least one other party. The call is placed or received by the subscriber at a first device. At least one service feature of the calling plan is invoked during the active call. This service feature includes an add callers feature for adding at least one additional party to the existing active call between the subscriber and the other party. The service feature additionally includes a transfer devices feature for transferring the existing active call to at least one additional device of the subscriber and hanging up on the first device by the subscriber to confirm the transfer of the call to the additional device.