Communication lines open 24 hours intended to avoid breakdown over reported violations and other issues
Qatari, US and Egyptian negotiators are running a communications hub in Cairo to protect the ceasefire in Gaza, as Donald Trump said he was not confident the break in fighting would hold.
Violations have already been reported. Medics in Gaza said on Monday that eight people had been hit by Israeli fire. The start of the ceasefire was also delayed when Hamas did not provide the names of hostages to be released.