Complex sentence: Beltelecom has a network of fiber-optic trunk lines and is the sole provider of fixed telephony in Belarus, provides long-distance and international calls as well as broadband access to the Internet via ADSL, as well as Wi-Fi services.
Split into simpler sentences: Beltelecom has a network of fiber-optic trunk lines and is the sole provider of fixed telephony in Belarus. It provides long-distance and international calls, broadband access to the Internet via ADSL, and Wi-Fi services.