BOSCH SECURITY SYSTEMS PRS-CSR LBB 4432/00 REMOTE CALL STATION FOR CONFERENCE

The Bosch LBB 4432/00 is a PRS-CSR (Priority Representative and Secretary for Chairman) Remote Call Station. It is a specialized, wall-mounted control unit designed for use with Bosch DCN (Digital Conference Network) and DCN Next Generation (DCN NG) conference systems.

Its primary function is to provide a dedicated, centralized control point outside of the main conference room for a secretary, assistant, or technical operator to monitor and manage conference proceedings, with a special focus on facilitating communication with the chairman unit.

Key Features and Functionality

1. Remote Communication:

   • Call Button: The most prominent feature is a large, backlit “CALL” button. This allows the remote secretary to establish a direct audio link with the Chairman’s unit (LBB 4430/00) inside the conference room. The chairman unit will ring and indicate an incoming call.

2. Priority Interrupt:

   • The remote operator can activate a “PRIORITY” function. This mutes all other open microphones in the conference (except the Chairman’s) and allows the remote station to broadcast an announcement directly into the conference. This is critical for making urgent announcements without entering the room.

3. Status Monitoring:

   • The unit provides visual feedback on the status of the conference system:

     • “IN USE” LED: Illuminates when the conference system is active and in session.

     • “CALL” LED: Flashes to indicate an incoming call from the chairman and stays lit when the call is active.

     • “PRIORITY” LED: Indicates when the priority interrupt function is active.

4. Microphone Control:

   • The operator can remotely turn the microphone of the Chairman’s unit ON or OFF. This is useful for ensuring the chairman is not interrupted when not speaking or for managing the audio feed.

5. Robust and Discreet Design:

   • Designed for wall-mounting in a secretary’s office, technical control room, or outside the conference hall.

   • Features a professional, durable enclosure that matches the aesthetics of the Bosch conference product line.

   • Simple, intuitive interface with tactile buttons for reliable operation.

6. System Integration:

   • Connects directly to the DCN or DCN NG conference system network.

   • It is typically connected to the Central Control Unit (CCU) or a system hub, not directly to the delegate units.

Typical Use Cases / Applications

This device is essential in formal conference environments where a chairman leads the proceedings and requires dedicated external support:

• Corporate Boardrooms: A secretary can screen calls, inform the chairman of urgent matters, and make announcements without interrupting the meeting’s flow.

• Council Chambers & Parliament: Allows a session coordinator or clerk to communicate directly with the session chairman or speaker.

• Courtrooms: Enables a court clerk or recorder to communicate with the judge’s bench.

• Multilingual Conference Systems: An interpreter coordinator can use it to communicate with the chairman about interpretation channel issues.

Technical Specifications 

• Product Code: LBB 4432/00

• Product Line: Bosch Conference Systems (DCN / DCN Next Generation)

• Type: Remote Call Station / Wall-mounted Control Unit

• Primary Interface: Large “CALL” button, “PRIORITY” button, Microphone On/Off switch, and status LEDs.

• Connection: Connects to the DCN system bus via a standard DCN cable.

• Mounting: Wall-mounted.

• Compatibility: Designed for use with the LBB 4430/00 Chairman Unit and the broader DCN and DCN NG system infrastructure.

Position in the Product Ecosystem

The PRS-CSR LBB 4432/00 is a specialized accessory that complements the core components of a Bosch conference system:

• Central Control Unit (CCU): The brain of the system.

• Chairman Unit (LBB 4430/00): The primary unit it communicates with.

• Delegate Units: The units it can monitor and override.

• Discussion Units: The speaking stations for participants.