History In 1982, the Postal Services Department merged with the then Telecommunication Authority of Singapore, known as Telecoms. In 1992, the Telecommunication Authority of Singapore was split into three entities: the reconstituted Telecommunication Authority of Singapore (TAS, now part of the Info-communications Development Authority), Singapore Telecommunications Private Limited (now Singapore Telecommunications Limited) and Singapore Post Private Limited, an associated company of Singapore Telecommunications (as of Jun 2012).