1.18 Proprietary Telephone (PT) FeaturesFeature Guide 1351.18.2 Flexible ButtonsDescriptionFlexible buttons are buttons whose functions can be customised through either system or personalprogramming. The following types of flexible buttons are found on proprietary telephones (PTs) and/orDirect Station Selection (DSS) Consoles:a) Flexible CO buttonsb) Flexible DSS buttonsc) Programmable Feature (PF) buttonsd) Flexible MESSAGE button[Button Usage]Button FunctionSingle-CO (S-CO) Used to access a specified outside (CO) line for making or receiving calls (1.5.3.3 Outside (CO) Line Access).Group-CO (G-CO) Used to access an idle outside (CO) line in a specified outside (CO) line groupfor making calls. Incoming calls from outside (CO) lines in the assigned outside(CO) line group arrive at this button ( 1.5.3.3 Outside (CO) Line Access).Other-CO (O-CO) Used to access an idle outside (CO) line for making calls. Incoming calls fromthe assigned outside (CO) lines, which are not assigned to S-CO or G-CObuttons, arrive at this button ( 1.5.3.3 Outside (CO) Line Access).Direct StationSelection (DSS)Used to call an extension with a one-touch operation ( 1.5.1.1 Intercom Call).One-touch Dialling Used to call a preprogrammed party or access a feature with a one-touchoperation ( 1.6.1.2 One-touch Dialling).Message Used to leave a message waiting indication, call back the party who left themessage waiting indication, or play back voice messages ( 1.17.1 MessageWaiting).Message for anotherextensionUsed to access voice messages stored for another extension ( 1.17.1Message Waiting).FWD/DND (CallForwarding/Do NotDisturb)Used to set the FWD or DND feature for the extension ( 1.3.1.1 CallForwarding (FWD)/Do Not Disturb (DND)—OVERVIEW).Save Used to store a telephone number while in a conversation with an outside partyor while hearing a busy tone, and then easily redial the number later ( 1.6.1.4Redial).Conference Used to establish a 3-party or 5-party conference call ( 1.13.1.2 Conference).Caller ID Indication—PersonalUsed to inform an extension user of calls logged in his or her personal area,store the information of an incoming call during a conversation, and view callerinformation while on-hook and then call back a caller ( 1.16.2 Incoming CallLog).
