BSS BLU-HIF – Telephone Headset Interface for Soundweb London

Product Overview

The BSS BLU-HIF is a telephone headset interface that connects the headset jack of a VoIP or digital phone to the AEC input and analog output of a Soundweb London device, enabling the phone to serve as the dialing interface and audio hybrid for a conference system. By bridging the headset port of a standard VoIP phone directly to BSS Soundweb London signal processing, the BLU-HIF eliminates the need for third-party control systems or dedicated POTS telephone hybrids in many conferencing installations. The interface supports both RJ-22 and 2.5mm TRS headset connections, covering the two most common VoIP phone headset wiring configurations. With its rugged metal chassis and surface or under-table mounting options, the BLU-HIF is a practical, low-cost conferencing interface for commercial meeting spaces and boardrooms.

Product Description

The BSS BLU-HIF Telephone Headset Interface provides a straightforward, low-cost method for integrating a VoIP or digital telephone into a Soundweb London-based conference audio system. The device features an RJ-22 jack that connects to the headset port of a compatible VoIP phone, along with a balanced Combicon input (Tx) for sending near-side audio and a balanced Combicon output (Rx) for receiving far-side audio. Because side-tone is present on the Rx channel when using a phone headset jack, BSS Audio specifically recommends routing the Rx output to an AEC (Acoustic Echo Cancellation) input on the Soundweb London device rather than a standard analog input — the AEC algorithm will remove the side-tone cleanly. The Tx channel connects to a standard analog output of the Soundweb London device. The BLU-HIF ships with two cables whose 4P4C RJ-22 connectors are wired to match the two most common headset jack configurations found in VoIP phones, ensuring broad out-of-the-box compatibility without special adapters. An additional 2.5mm TRS jack provides an alternate connection path for cellular phones, giving end users a backup communication route when the primary phone system is unavailable — a useful feature in mission-critical conference rooms and government facilities. The rugged metal chassis is designed for discrete deployment: it can be surface-mounted or secured under a conference table for a clean installation. Programming requirements are minimal compared to solutions that rely on third-party control systems, and the familiar VoIP phone interface reduces end-user training needs. The BLU-HIF is fully documented with a datasheet and installation guide available from BSS Audio, and it is supported by HiQnet London Architect for Soundweb London signal flow configuration.

Key Features

• RJ-22 Headset Jack Interface — Connects directly to the headset jack of a VoIP or digital phone, enabling the phone to function as the conference system dialer and hybrid.
• Balanced Analog Input and Output — 1 balanced Combicon input (Tx) and 1 balanced Combicon output (Rx) for direct connection to Soundweb London analog I/O.
• AEC-Compatible Rx Output — Rx channel is designed to feed an AEC input on a Soundweb London device to remove phone side-tone from the far-end signal.
• 2.5mm TRS Alternate Path — Secondary 2.5mm jack supports cellular phone connection as a backup or alternate communication interface.
• Two Included RJ-22 Cables — Ships with two cables covering the two most common VoIP phone headset jack wiring configurations for quick installation.
• Rugged Metal Chassis — Commercial-grade metal enclosure suitable for demanding installed environments.
• Surface and Under-Table Mountable — Flexible mounting options allow discrete placement in conference rooms, boardrooms, or training rooms.
• Eliminates Third-Party Control Systems — Simplifies system design by using the VoIP phone itself as the dialing interface, removing the need for additional control hardware.

Typical Applications

• Boardroom conference system using a VoIP phone as the dialing interface with BSS Soundweb London AEC processing
• Conference room with existing VoIP phone infrastructure integrated into a Soundweb London DSP-based audio system
• Training room or multi-purpose room requiring low-cost telephone hybrid functionality with Soundweb London
• Government space with mission-critical conferencing needing a cellular backup path via the 2.5mm alternate connection
• Commercial meeting space where simplifying end-user operation with a familiar desk phone interface is a priority

Technical Specifications

Frequently Asked Questions

Q: What type of phones are compatible with the BSS BLU-HIF?

A: The BLU-HIF is designed for use with VoIP and digital phones that have a standard headset jack (RJ-22). It ships with two cables covering the two most common wiring configurations in VoIP phones. The 2.5mm jack supports cellular phones with a TRS headset jack.

Q: Why must the Rx output be connected to an AEC input on the Soundweb London device?

A: When a headset jack is used as the interface, side-tone (a small amount of the transmit signal) is present on the Rx (receive) channel. Connecting the Rx output to an AEC input on the Soundweb London device allows the AEC algorithm to remove this side-tone, resulting in clean far-end audio for the room.

Q: Does the BLU-HIF replace a dedicated telephone hybrid card?

A: The BLU-HIF serves as a low-cost alternative to a dedicated telephone hybrid for installations where a VoIP or digital phone is already present. It uses the phone itself as the hybrid and dialing interface, avoiding the need for a separate PSTN hybrid card or third-party control system.

Q: Can the BLU-HIF be mounted under a conference table?

A: Yes. The rugged metal chassis supports both surface mounting and under-table mounting, allowing for a clean installation where the device is hidden from view.

Q: What Soundweb London devices are compatible with the BLU-HIF?

A: The BLU-HIF connects to the analog I/O of any Soundweb London device that has balanced analog inputs and outputs, such as the BLU-101, BLU-800, BLU-806, BLU-320, and similar processors. An application guide for use with the BLU-101 is available from BSS Audio.

Q: Where can I purchase the BSS BLU-HIF and receive support?

A: The BLU-HIF (SKU: BSSBLUHIF-M) is available at creationnetworks.net. Technical documentation including the datasheet and installation guide are available from BSS Audio. Support is available through HARMAN Professional technical channels.