Dual-Purpose Voice Paging Adapter, Telephone to Paging System Interface, Station Port or Trunk Port Capable, 600-Ohm Output, Background Music Input w/Volume Control, Pre-Announce and Confirmation Tones, Works With Paging-Only/Two-Way Systems, Adjustable Tone Volume, Suppresses Background Music While Paging, Station Port Max Page Times From 1-200s This TAMB2 Telephone Access Module with Power Supply from Bogen Communications is designed as an interface between a telephone system and a paging system providing dual-purpose voice paging. It's compatible with the full range of analog telephone port types and is capable of station port or trunk port operation. Music from a background music source with stereo-combining RCA jacks and volume control is possible via a line-level input which allows background music to be used during a page with central paging amplifiers don't have a muting provision. This module is ideal for simple or complex telephone paging situations. A 24V power supply is included and is required for all modes of operation.