An indiscriminate attack on an unsuspecting population using planted explosives and does not differentiate between civilians and enemy combatants isn't a "terrorist attack."

What is it then? A "police action"? "Self-defense"?

From AP

A booby trap is defined as “any device designed or adapted to kill or injure, and which functions unexpectedly when a person disturbs or approaches an apparently harmless object,” according to Article 7 of a 1996 adaptation of the Convention on Certain Conventional Weapons, which Israel has adopted.

The protocol prohibits booby traps “or other devices in the form of apparently harmless portable objects which are specifically designed and constructed to contain explosive material.”

Now, as far as a legal distinction, the jury is still out. But, morally, this is indefensible to the point of being state-sanctioned terrorism.

It was indiscriminate and it was mass terrorism.

As of 22 September 2024, the death toll from the attacks was 42, including at least 12 civilian deaths. More than 3,500 people were injured.

At least 12 people were killed in the first wave of attacks, including civilians such as two health workers, a 9-year-old girl and an 11-year-old boy. The adult son of Ali Ammar, a Hezbollah member of Parliament was killed; Prime Minister Najib Mikati visited southern Beirut to pay his respects. More than 2,750 people were wounded. In the second wave on 18 September, at least 30 people were killed and 750 others were injured. One eye doctor at Mount Lebanon University Hospital reported that a number of those injured showed signs of something being blown up directly in their face, with some losing one or both eyes, while others had shrapnel in their brains. The Lebanese health ministry reported that 300 people had lost both eyes and 500 people had lost one eye as a result of the pager attacks. Other doctors saw severe hand, waist and facial injuries, reporting patients with fingers torn, hands amputated, eyes popped out of the socket and facial lacerations.

Health Minister Firass Abiad said the vast majority of those being treated in emergency rooms were in civilian clothing and their Hezbollah affiliation was unclear. He added the casualties included elderly people as well as young children. According to the Health Ministry, healthcare workers were also injured and it advised all healthcare workers to discard their pagers. On 26 September, Abdallah Bou Habib, Lebanon's Foreign Minister, confirmed that most of those carrying pagers were not fighters, rather civilians like administrators. Qassim Qassir, a Lebanese expert on Hezbollah, said the attacks mostly struck civilian workers, leaving its military wing largely unaffected. An unnamed source said 1,500 Hezbollah fighters were taken out of action due to injuries, with many blinded or having lost their hands.

https://en.m.wikipedia.org/wiki/2024_Lebanon_pager_explosions

“International humanitarian law prohibits indiscriminate attacks – meaning attacks that fail to distinguish between civilians and military targets. It also prohibits the use of the type of booby-traps that appear to have been used in these attacks.

https://www.amnesty.org/en/latest/news/2024/09/lebanon-establish-international-investigation-into-deadly-attacks-using-exploding-portable-devices/

“Such attacks could constitute war crimes of murder, attacking civilians, and launching indiscriminate attacks, in addition to violating the right to life,” the experts said.

https://www.ohchr.org/en/press-releases/2024/09/exploding-pagers-and-radios-terrifying-violation-international-law-say-un

Just because Israel routinely violates international humanitarian law and targets civilians doesn't make this any less of a violation of international humanitarian law and a war crime

If it had been perpetrated against Israelis you would not be saying this.

You're right, it's only Terrorism when it comes from the Terror region of the Middle East. This is just sparkling civilian murder designed to cause fear and chaos.