In [[telecommunicationtelecommunications]], a '''group alerting and dispatching system''' is a [[service feature]] that (a) enables a controlling [[telephone]] to place a [[telephone call|call]] to a specified number of telephones simultaneously, (b) enables the call to be recorded, (c) if any of the called lines is busy, enables the equipment to camp on until the busy [[telephone line|line]] is free, and (d) rings the free line and plays the recorded [[message]].
