Systems went down at about 18:55, affecting customers in both Guernsey and Jersey.

Services returned to normal around 00:55 this morning.

This was followed by a 20 minute outage at 04:00, which only affected around a quarter of subscribers.

The cause of the fault remains unclear, but JT says it is investigating. 

“I’d like to apologise to our customers for the problem with JT services yesterday evening,” said JT Managing Director, Daragh McDermott.

“JT’s networks are now working normally again after the problem, which affected landlines, mobiles and internet services in Jersey and Guernsey. Our engineers got to work immediately, and made sure services were running again as quickly as they could.

“We are now isolating the root cause and putting measures in place to prevent it happening again.”

Pictured top: St Peter Port.