The agreement, announced today, followed a rare artillery exchange over the Korean border last week in which North Korean leader Kim Jong-Un order his frontline troops onto war-footing.
"I warmly welcome the news of an agreement reached between the Republic of Korea and the Democratic People's Republic of Korea today," Ban said in a statement.
He voiced hope that the agreement to hold regular talks "will serve as a mechanism to effectively manage any problems that may arise on the Korean peninsula."
Ban, who served as South Korean foreign minister from 2004 to 2006, had called on both sides to halt the escalation.
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He called for greater cooperation on humanitarian measures, such as reunions of separated families, which the two sides agreed to work towards resuming in the new agreement, and said he hoped talks on nuclear disarmament could also resume.
"As secretary-general, I stand ready to support inter-Korean cooperation," Ban said.