| Extension users can access certain CO and PBX features by interrupting line loop current. |
Flash allows an extension user to access certain CO and PBX features by interrupting line loop current. Flash lets an extension user take full advantage of whatever features the connected telco or PBX offers. You must set the Flash parameters for compatibility with the connected telco.
The Class of Service option 1403-01: Flash for Single Line Set [System: Class of Service: SLTs: SLTs(1403): Flash for Single Line Sets] allows you to enable or disable hookflash for analog single line extensions. If enabled (Y), a single line extension can hookflash normally and use any of the associated system features. If disabled (N), hookflash is prevented. This means the analog extension can not use any features that require a hookflash (such as Hold, Conference, or Transfer). This may be helpful for lobby phones and single line Ringdown Extensions that should not have access to system features.
The option is ignored for voice mail ports.
[2.18] An extension can have a Flash Feature Key. The primary purpose of this key is to enable additional features on the Cordless Lite II and Cordless DECT telephones. The Flash key allows the cordless user to easily pick up a waiting call when Call Waiting with Caller ID is provided. It also allows the cordless user to control a Door Box relay.