How to replace the fuse: Open the fuse compartment with a screwdriver and replace the fuse and fuse
The equipment must be connected to direct extension lines, and a payphone should not be connected as
999 and 112 can be dialled on the apparatus after accessing the Exchange line for the purpose of making
outgoing calls to the BT emergency services.
During dialling, this apparatus may tinkle the bells of other telephones using the same line. This is not a fault
and we advise you not to call the Fault Repair Service.