In 1988, Peter Jungvid, founder of Bellman & Symfon, wrote down his ideas for the Bellman Ringer – a telephone amplifier that would let you choose between ring signals. In the office where he used to work, all the telephones sounded the same. From the staff room it was impossible to tell whose phone was ringing. Every coffee break someone got up and ran to their phone unnecessarily. ... https://shop.bellman.com