Lucent (Avaya, AT&T) PagePal 22050-918Paging Adapter ModuleCondition:* Used, Removed From Service In Working Condition. Unable To Test. As Pictured.Additional Notes:* Designed to interface with most telephone systems (PBX, KTS, Centrex) to virtually any public address system.* Inputs for customer-provided background music and auxiliary inputs* Inputs for tones generated by unit (Pre-announcement, phone access confirmation, siren, chime, night bell)* Inputs are automatically selected on a prioritized basis and routed to a single output.Lucent22050-918