Grandstream GXP21xx Series User Manual - Manual (Page 63)

FIRMWARE VERSION 1.0.8.4 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 61 of 85
ring on incoming call. The default setting is "No".
Headset TX gain
Configures the transmission gain of the headset. The default value is
0dB.
Headset RX gain Configures the receiving gain of the headset. The default value is 0dB.
Handset TX gain
Configures the transmission gain of the handset. The default value is 0
dB.
Settings -> LCD Display
Backlight Brightness: Active
Configures the LCD backlight brightness level (from 0 to 8) for phone's
active status. The default value is 6.
Note:
This options is not applicable to GXP140x.
Backlight Brightness: Idle
Configures the LCD backlight brightness level (from 0 to 8) for phone's
idle status. The default value is 2.
Note:
This options is not applicable to GXP140x.
LCD Contrast Configures the LCD contrast level (from 0 to 20). The default value is 10.
Disable Missed Call Backlight
When it's set to "Yes", the LCD backlight will not be turned on when there
is a new missed call. The default setting is "No".
Note:
This option is not applicable to GXP140x.
Settings -> Date and Time
NTP Server
Defines the URL or IP address of the NTP server. The phone may obtain
the date and time from the server.
Allow DHCP Option 42
Override NTP Server
Defines whether DHCP Option 42 should override NTP server or not.
When enabled, DHCP Option 42 will override the NTP server if it's set up
on the LAN. The default setting is "Yes".
Time Zone
Configures the date/time used on the phone according to the specified
time zone.
Self-Defined Time Zone
This parameter allows the users to define their own time zone.
The syntax is: std offset dst [offset], start [/time], end [/time]
Default is set to: MTZ+6MDT+5,M4.1.0,M11.1.0
MTZ+6MDT+5
This indicates a time zone with 6 hours offset with 1 hour ahead which is