Check the listing for details. Viking electronics PSA-IP Ip Paging Speaker Adapter. Condition: New. Listed at 243.86 USD. SIP compliant PoE powered (class 3, Paging prioritization Plays audio from standard multicast sources SIP endpoint or multicast group member Red call status LED indicator Compatible with Polycom multicast paging Built-in high efficiency 6 Watt class D amplifier Can drive up to six 8 ohm analog speakers for greater coverage SIP/Multicast: SIP page, SIP page and zoned multicast receive Support for access code to prevent unwanted SIP calls Hangs up on: busy signal, time-out, or touch tone command Network remote speaker volume control Mounting: Magnetically attach to speaker magnet or fasten to the 25/70V transformer mounting holes on speaker frame Chassis protects circuitry against plenum dust Diagnostics for testing speaker Programmable pre-page alert tone