Samsung NX-308 - Manual (Page 80)

Use this MMC to lock or unlock stations in order to control others using your
station.
UNLOCK Normal status
LOCKED1 Prohibit another user from making outside call.
LOCKED2 Prohibit another user from dialing or receiving any calls.
PROCEDURE LCD DISPLAY
1. Press [TRANSFER] and dial 00
2. Using [VOLUME (-) or (+)], select a station (e.g. 202)
To select all stations, press [VOLUME (-)] first
3. Press [MUTE] or [MESSAGE] to make selections
OR
Using KEYPAD, dial
0 for UNLOCKED
1 for LOCKED1
or 2 for LOCKED2
4. Press [TRANSFER] to save and exit
DEFAULT DATA
UNLOCKED
RELATED MMC
MMC 01 CHANGE USER PASSCODE
NX-SERIES HYBRID KEY SYSTEM PROGRAMMING SECTION
MMC 00 STATION LOCK