German internet service provider Deutsche Telekom (DT) say they reached a data transmission milestone of 400Gbps. The real-world speed was achieved over a single optical fiber channel over a 734km (456mi) distance between Berlin and Hannover and back again.
With 48 channels available in the fiber strand used in the system, it should still theoretically result in total throughput of 24.6Tbps at its peak. DT compared the speeds to sending the music stored on 3,696 CDs at the same time on a single optical fiber.
Now that's FAST !



