How did the United Nations help end the first India-Pakistan war?

The first India-Pakistan war, which began in 1947 following the partition of India and the subsequent Kashmir conflict, was brought to an end through the mediation of the United Nations.123

The United Nations facilitated a ceasefire agreement that officially took effect in January 1949. Following this intervention, India and Pakistan further defined a ceasefire line in July 1949, which served to divide the administration of the territory. While this line was initially intended as a temporary measure, it was later converted into the "line of control" during the 1972 Simla Agreement and remains the de facto boundary between the two nations today.123