Product Overview The Bogen UTI312 is a multi-zone paging and signaling controller built for 70V commercial audio installations where zone flexibility and telephone interface compatibility are required. Designed for retail environments, schools, offices, warehouses, and medical facilities, the UTI312 starts as a single-zone unit and expands to a full 12-zone system through the addition of Bogen ZX3 expansion modules. Its modular architecture allows AV integrators and facilities teams to right-size the system at installation and scale as needs grow. With native support for loop start, ground start, station, and page port telephone interfaces, the UTI312 integrates directly into existing telephony infrastructure without additional adapters. Product Description The UTI312 is the centerpiece of a scalable 70V paging system for commercial deployments that demand both telephony integration and multi-zone audio control. The unit ships with a single internal zone bay and accepts up to four Bogen ZX3 expansion modules, each supporting three independent zones, for a maximum of 12 addressable paging zones from a single controller. This makes the UTI312 well suited for facilities that need to direct announcements to specific departments, floors, or areas without broadcasting building-wide. Telephone interface support covers the full range of standard analog port types: loop start trunk, ground start trunk, analog station access, and page port with both contact closure and voice activation. This breadth of compatibility means the UTI312 can be patched into virtually any existing PBX or key system without requiring telephony modifications. Background music inputs are included on each zone, with individual volume controls allowing each area to be adjusted independently. When a page is initiated, the override paging function mutes background music and all other audio sources across the affected zones, ensuring that priority messages are heard clearly. This override capability is particularly important in high-ambient-noise environments such as warehouses and retail floors. The UTI312 is the appropriate choice for installations that anticipate zone expansion, making it a practical long-term investment for growing facilities. Key Features Expandable to 12 Zones — Accepts up to four Bogen ZX3 expansion modules, each adding three zones, for a maximum of 12 independently addressable paging zones. Telephone Interface Support — Compatible with loop start trunk, ground start trunk, analog station access, and page port interfaces (contact closure and voice activation), enabling direct integration with existing PBX or key systems. Override Paging — Priority page function mutes background music and all other audio sources to ensure announcements are heard clearly across affected zones. Background Music Input — Dedicated BGM inputs per zone with individual volume controls allow each area to be set independently. Modular Expansion Architecture — Bogen ZX3 modules slot into the UTI312's expansion bays, keeping the system compact and organized as zone count grows. Commercial-Grade Design — Built for continuous-duty operation in demanding commercial environments including schools, offices, warehouses, retail spaces, and medical facilities. Single-Controller Simplicity — Manages up to 12 zones from a single unit, reducing rack space and system complexity compared to deploying multiple single-zone controllers. Typical Applications Commercial meeting space Government space Multi-purpose room Training room Auditorium Technical Specifications Model UTI312 Maximum Zones 12 (with 4 x Bogen ZX3 expansion modules) Expansion Module Bogen ZX3 (3 zones per module, up to 4 modules) Telephone Interface Types Loop Start Trunk, Ground Start Trunk, Analog Station Access, Page Port (contact closure / voice activation) Background Music Input Yes — per zone, with individual volume control Override Paging Yes — mutes BGM and all other audio sources Audio System Compatibility 70V distributed audio systems Companion Product Bogen ZX3 Zone Expansion Module Frequently Asked Questions How many zones does the UTI312 support out of the box? The UTI312 ships as a single-zone controller. Each Bogen ZX3 expansion module adds three zones. With four ZX3 modules installed, the system supports up to 12 zones total. Which telephone interface types does the UTI312 support? The UTI312 is compatible with loop start trunk, ground start trunk, analog station access, and page port interfaces — both contact closure and voice activation. This covers the vast majority of PBX and key systems used in commercial environments. Can the UTI312 be added to an existing 70V audio system? Yes. The UTI312 is designed to integrate into existing 70V distributed audio installations. It connects to standard 70V amplifiers and speaker lines, and works alongside existing telephony and BGM infrastructure. Is the Bogen ZX3 module included with the UTI312? No. The UTI312 ships as the base controller unit. Bogen ZX3 expansion modules are sold separately and can be added as zone requirements grow. How does override paging work? When a priority page is initiated, the UTI312 automatically mutes background music and any other active audio across the affected zones. Normal audio resumes once the page ends. What environments is the UTI312 appropriate for? The UTI312 is suited to commercial and institutional settings that require zone-selectable paging: offices, schools, warehouses, retail stores, medical facilities, government buildings, and multi-room commercial spaces. Does the UTI312 require professional installation? Integration with telephone systems and 70V audio infrastructure should be performed by a qualified AV integrator or low-voltage contractor familiar with commercial paging systems.
