Communication Manager requires a separate port for each paging zone, and supports a maximum of nine zones. If you have more than nine zones or do not want to allot that many ports for paging, Avaya can provide auxiliary paging systems. These systems can support many zones from 1 port. They can also provide additional capabilities such as two-way communication through the loudspeaker system. In this case, the person paged can speak directly to the pager over the loudspeaker.