Largest operational telephone weighed 3,500 kg
The world's largest operational telephone was exhibited in 1988 to celebrate the 80th anniversary of an insurance company based in Netherlands. The phone was 8 feet 1 inch high, 19 feet 11 inches long, and weighed 3,500 kg. The handset, being 23 feet 5 inches long, had to be lifted by a crane to make a call. 