punQtum Q110, Beltpack@+, Plug and Play, Powered by any PoE source (Switch/Injector), Daisy-chain up to 8 beltpacks on one line, Audio replay of missed calls up to 30s, No master station needed, Supports industry standard headsets (4-Pin), Works with any IP switch, Talk/Listen to any 2 out of 32 partylines, 2 configurable “Talk-to-many“ channels, Dimensins (HxWxD): 111 x 110 x 40 mm, Weight: 255 g, punQtum is a brand of Riedel