S-SPD (Speed Calling – System)
Allows a station user to call certain frequently dialed numbers using fewer digits (abbreviated call codes) than would normally be required.
CAS (CAS – Switch Hook Flash)
Allows the user to send a switchhook flash while on an outside trunk.
FLASH (Flash)
Provides the station with a switchhook flash.
FDN (Call Forward – No Answer)
Permits a call to an unanswered station to be forwarded to a predesignated station if the called station does not answer within a predetermined period of time.
DND (Do Not Disturb)
Allows a station user to deny access to the station line for incoming calls.
MIC (Microphone On/Off)
Allows the user to turn the microphone on and off for use with the speakerphone.
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