WE HAVE A BT INSPIRATION SYSTEM AND ONE OF THE EXTENSIONS IS STUCK ON ENGAGED TONE CANNOT RING IN OR OUT
HELP
Hi,
Have you tried unplugging it and plugging it in again (both the extension and the main system)? Have you tried another phone?
Only thing I can think of after that is to call the Faults Helpdesk on 0800 800 154.
Dave