Canada and Bermuda are linked by telegraph cable.

Bermuda is a British Overseas Territory in the North Atlantic Ocean. The closest land outside the territory is in the United States state of North Carolina, about 1,035 km (643 mi) to the west-northwest.

Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas pigeon post is not. Ancient signalling systems, although sometimes quite extensive and sophisticated as in China, were generally not capable of transmitting arbitrary text messages. Possible messages were fixed and predetermined, so such systems are thus not true telegraphs.