Telkom has major business lines in fixed-line telephony, internet, and data communications. It is operated as the parent company of the Telkom Group, which is engaged in a broad range of businesses that consist of telecommunication, multimedia, property, and financial services.

Telkom is one of the world’s oldest telecommunication companies. The company can be traced back to an establishment of the first electromagnetic telegraph service in Indonesia on 23 October 1856, by the Dutch Colonial Government to connect Batavia (Jakarta) and Buitenzorg (Bogor).

Telkom Indonesia is a dominant and largest provider of fixed-line services due to owning most of Indonesia’s copper network. Telkom also runs telephone exchanges, trunk networks and local loop connections for its fixed-line telephones. Currently, Telkom is responsible for about 169.5 million phone lines in Indonesia.

In March 2019, Telkom Indonesia was one of the first Asian telcos to launch a Cloud Gaming service in coopération with Gamestream.

According to the latest research by Brand Finance on 5,000 of the most famous brands in the world, Telkom Indonesia is the strongest telecommunications brand in Southeast Asia in 2022.

According to Wikipedia.