
4.17.3 Operation Guide.......................................................................................................................125
4.18 COLOR RING........................................................................................................................................125
4.18.1 Introduction...............................................................................................................................125
4.18.2 Configuration............................................................................................................................125
4.18.3 Operation Guide.......................................................................................................................125
4.19 BLACKLIST &WHITELIST....................................................................................................................125
4.19.1 Introduction...............................................................................................................................125
4.19.2 Configuration............................................................................................................................125
4.19.3 Operation Guide.......................................................................................................................126
4.20 EMERGENCY PHONE NUMBER .............................................................................................................126
4.20.1 Introduction...............................................................................................................................126
4.20.2 Configuration............................................................................................................................126
4.20.3 Operation Guide.......................................................................................................................126
4.21 CALL TIME LIMIT ................................................................................................................................127
4.21.1 Introduction...............................................................................................................................127
4.21.2 Configuration............................................................................................................................127
4.21.3 Operation Guide.......................................................................................................................127
4.22 ALARM CLOCK....................................................................................................................................127
4.22.1 Introduction...............................................................................................................................127
4.22.2 Configuration............................................................................................................................127
4.22.3 Operation Guide.......................................................................................................................127
4.23 DO NOT DISTURB ................................................................................................................................128
4.23.1 Introduction...............................................................................................................................128
4.23.2 Configuration............................................................................................................................128
4.23.3 Operation Guide.......................................................................................................................128
4.24 DELAY HOTLINE ..................................................................................................................................128
4.24.1 Introduction...............................................................................................................................128
4.24.2 Configuration............................................................................................................................128
4.24.3 Operation Guide.......................................................................................................................129
4.25 INSTANT HOTLINE ...............................................................................................................................129
4.25.1 Introduction...............................................................................................................................129
4.25.2 Configuration............................................................................................................................129
4.25.3 Operation Guide.......................................................................................................................129
4.26 CALL PARK ..........................................................................................................................................129
4.26.1 Introduction...............................................................................................................................129
4.26.2 Configuration............................................................................................................................130
4.26.3 Operation Guide.......................................................................................................................130
4.27 RECORDING.........................................................................................................................................130
4.27.1 Introduction...............................................................................................................................130
4.27.2 Configuration............................................................................................................................130
4.27.3 Operation Guide.......................................................................................................................130
4.28 CALL BACK ON BUSY..........................................................................................................................130
4.28.1 Introduction...............................................................................................................................130
4.28.2 Configuration............................................................................................................................131
4.28.3 Operation Guide.......................................................................................................................131
4.29 CENTREX.............................................................................................................................................131