Last week, CAT Telecom officially closed its telegram service after 133 years, citing a decline in its popularity and low profits. The telegraph was the first modern form of public communication for Thai people and was introduced during the reign of King Rama V.  It was put into service about eight years before the Thai postal service.  Officials at the central post office in Bangkok saw the peak of the service's popularity about 30 years ago, when they were required to work around the clock in three separate shifts.
Bangkok Post