The navies of the two Koreas have successfully exchanged radio communications in the first test of a South-North military hotline since the division of the Korean Peninsula in 1945.

During the three-hour test, patrol boats of the two sides used a joint radio frequency and Hallasan and Baekdusan as call signs.

The trial communications conducted on Monday morning were in line with a recent bilateral agreement on preventing accidental armed clashes at the West Sea border.

With the trial communications ending in success, the two navies plan to commence regular radio contact between patrol boats of each side starting Tuesday.

The two sides also tested flag and flash signals, which will be used in case radio communications are not possible due to equipment failure or if the distance between patrol boats of the two sides is too close.

After three days of inter-Korean military talks at the North's border city of Gaesong last week, the two Koreas agreed to take measures to reduce tensions along their shared border, including the establishment of a military hotline by mid-August.