The disable flash on Analog phones feature provides via administration the capability to disable the flash capability from an analog device. This feature includes a new classmark to disable the detection of a hookswitch flash by an analog telephone. When this classmark is assigned via a parameter used for such analog telephones, any attempt by a station user with that authorization to activate a hookswitch flash shall result in one of two states:

• An attempted hookswitch flash of short duration (less than disconnect time) is ignored
• An attempted hookswitch flash of longer duration (greater than disconnect time) results in an on-hook condition