In this image taken by South Korea's geostationary satellite, Chollian-2A, at 7:20 a.m. on Monday, and released by the National Meteorological Satellite Center, Typhoon Hinnamnor is seen moving northward near the country's largest island of Jeju. (National Meteorological Sataellite Center)

South Korea's three major telecom operators have set up emergency measures to deal with potential network disruptions caused by Typhoon Hinnamnor, as the country braces for what could be its most powerful storm ever.

Classified as a "very strong" typhoon, Hinnamnor has gradually moved northward to reach waters off the southern island of Jeju on Monday and is expected to make landfall 80 km north-northwest of the southern port city of Busan by 9 a.m. Tuesday, according to the Korea Meteorological Administration.

Hinnamnor is expected to become the strongest typhoon ever to make landfall in South Korea.

KT Corp., South Korea's No. 1 fixed-line operator and second-largest mobile carrier, said it has established emergency situation centers against the typhoon in major cities and plans to operate them until Sept. 13.

The company has placed emergency equipment, such as power generation vehicles, indoor ventilation fans and water pumps, at major regional network centers.

Leading wireless carrier SK Telecom Co. has also established a joint emergency situation center with affiliate SK Broadband Co. to monitor typhoon damages and provide supplies at facilities affected by the storm.

The company said it has mobilized emergency power generators at key facilities and has prepared against possible base station outages at subway stations prone to flooding.

LG Uplus Corp. is also operating an internal 24-hour emergency situation center and has placed key equipment supplies at regional network facilities to immediately deal with possible problems.

It is also preparing to provide free Wi-Fi access and other telecom support at emergency shelters that may be established due to storm and flood damages. (Yonhap)