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Collaboration and communication are major challenges in science. We go to great length to support our scientific stuff and offer usable solutions. Feedback and suggestions are appreciated via mail.
For group voice-chats we have a speakerphone ready for you in 3W05. It's basically a high quality microphone with speakers that you may use for phone calls and VoIP applications.
Android devices can pair the speakerphone using Bluetooth. Notebooks and desktop computers can use the device via USB or headphone-jack.
Don't hesitate to stop by at 3W05 and borrow it for a test call.