General FeaturesFeatures Guide 119External Feature AccessDescriptionAllows the extension user to have access to the features of a host PBX, Centrex or CentralOffice, such as Call Waiting, etc. This is performed by putting the current party on hold andsending a flash signal.Conditions• This feature is effective only during an outside call. However if the FLASH feature(Disconnection signal) is activated by System Programming, this feature does not work.• The flash time must be assigned as required by the Centrex, host PBX or outside line.• With a proprietary telephone, the FLASH button, FLASH/RCL button or the featurenumber is used to perform this function. With a single line telephone, the feature numbercannot be used when the user already has a Consultation Hold.• During outside calls, a FLASH stored in System Speed Dialing, Station Speed Dialing orOne-Touch Dialing functions as External Feature Access, not as Flash.Programming Guide References• [100] Flexible Numbering• [413] Flash Time• [990] System Additional InformationFeatures Guide References• Flash• Host PBX AccessUser Manual References• 4.3.45 External Feature Access