The Bogen UTI312 Multi-Zone Telephone Interface universal telephone interface provides single-zone or multi-zone paging for one-way applications such as self-amplified speaker systems. It is compatible with all standard analog port types and includes two audio outputs with level controls. It features microcontroller-based operation. Other notable characteristics include Night Ringer, Tone Trigger, Tone burst, Programmable activation of AUX contacts and a wealth other advanced functions. It comes with wall mounting flanges and rack panel kits.