Avaya PagePac Plus Controller with Power Supply works with any 70V or 25V amplifier for multi-zone paging. Provides 8 individual zones plus group and all call page. Features: Attendant override for priority announcements Two, three or four-digit codes, flexible zone numbering Interface with phone system page port, C.O. port or station port Up to 8 programmable zone groups Expandable to 56 zones with zone expansion units (V-5335-100) Access to page port with contact closure and DTMF output Power supply included