HSI6000 HSI6000 2.5 mm Headset Adapter for DX Series Beltpacks Clear-Com Marketing / Wednesday, November 8, 2017 0 12583 Article rating: No rating The HSI6000 Headset Interface Adapter allows any user to connect a standard 2.5 mm cordless or cell phone headset to BP200, BP210, BP300 and BP340 beltpacks. Read more