If indeed implemented, the move would be a major step in defusing tensions in the highly militarized Himalayan region, and open a possibility for broader detente between the two nuclear-armed powers.

Artillery, rockets and even small arms fire have been regularly exchanged between troops on opposite sides of the border, killing hundreds since the original ceasefire was signed.

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This time the two militaries themselves are making vocal commitments, with senior generals reaching an understanding over a hotline on Wednesday, a joint statement said.

“Both sides agreed for strict observance of all agreements, understandings and cease firing” along the frontier which separates Kashmir between Pakistan and India, it said. "Existing mechanisms of hotline contact and border flag meetings will be utilized to resolve any unforeseen situation or misunderstanding

The two South Asian neighbors have a long history of bitter relations and Pakistani authorities say Indian has made more than 13,000 violations of the ceasefire accord in the past 18 years. India also alleges large-scale ceasefire violations by the Pakistan army

Since gaining independence from British rule in 1947, they have fought two of their three wars over control of Kashmir, which is divided between them and claimed by both in its entirety. Both sides often exchange fire in Kashmir and civilians are caught in the crossfire whenever such violence erupts. Dozens of people are killed every year in the violence.

But relations were further strained between them in 2019, when Pakistan shot down an Indian warplane in Kashmir and captured a pilot in response to an airstrike by Indian aircraft targeting militants inside Pakistan.

India at the time said the strikes targeted Pakistan-based militants responsible for a suicide bombing that killed 40 Indian troops in the Indian-controlled part of Kashmir.

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Pakistan said there was no militant camp and the Indian planes dropped bombs in a forest.

Since then, a peace process between Islamabad and New Delhi has been on hold. But military experts from both countries were optimistic about the new agreement.

In India, Lt. Gen. D.S. Hooda, who was head of the Indian military’s Northern Command from 2014 to 2016, welcomed the move, calling it “a significant, positive development given there has been steep escalation in the border skirmishes in last few years."

In Pakistan, retired army general Talat Masood said he believed Washington and other world leaders had helped in reducing tension between Pakistan and India, adding that peace was in the best interest of both countries.

It was unclear what promoted two two militaries to initiate contact over the hotline, but Pakistan has been urging the international community to urge India for resuming dialogue with it to ensure peace in the region.

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However, Pakistan wants India to reverse a 2019 move under which New Delhi divided the Indian-administered part of the Muslim-majority Kashmir into two federally governed territories — Jammu and Kashmir, and Ladakh — touching off anger on both sides of the frontier.

India accuses Pakistan of arming and training anti-India rebels and also helping them by providing gunfire as cover for incursions into the Indian side. Pakistan denies this, saying it offers only moral and diplomatic support to Kashmiris who oppose Indian rule.

Rebels in Indian-administered Kashmir have been fighting Indian rule since 1989. Nearly 70,000 people have been killed in the armed uprising and the ensuing Indian military crackdown.