I've not had much to do with fiber installs etc, so might be simple answer, but what is an ITP port for ? This is at my folks who just had it installed today :)
Optical is lit up on the ONT so the fibre appears connected.
Maybe Internal Test Point for copper?
The ITP is supposed to be installed for every job where there is internal phone wiring that can be connected to the ONT's or router's VoIP phone output (assuming the contractor has read the Chorus manual), so the copper landline is cut and replaced by a phone lead from the VoIP output to the house phones. Would have been nice of them to put the jack right way up though!