On which day?
Does the 1644 London Liverpool Street - Clacton-on-Sea still detach a Harwich Town portion at Colchester?
Passenger/Public Information System. Driver enters a code into a PIS interface in the cab and the train should then do automatic announcemts enroute of the trains progess aswell as internal scrolling displays and the destination indicator on the front and sometimes on the side of the train.
For some reason the PIS code doesn't work for this service and hasn't ever as far as I know. Personally I just do manual announcement when safe to do so. Hopefully they can get it fixed sooner rather than later.
In reagrd to the PIS code it just comes up incorrect number, then we have to do manual announcements.