Telstra Exchange, based in Queanbeyan, is the go-to provider of telephone systems and equipment in Australia. Renowned as the top-ranking telecommunications carrier, Telstra serves over 18.3 million retail mobile phone customers, 3.7 million fixed-line bundle and standalone data subscribers, and approximately 1.4 million standalone voice subscribers. Additionally, they are a leading ISP, catering to more than 7.3 million fixed-line broadband subscribers. Telstra also extends its services as a wholesale network provider. With an extensive customer base, Telstra stands as a pillar in the telecommunications industry.