Grandstream Networks, Inc.  GXP User Manual  Page 27 of 39  
            Firmware 1.1.6.46         Last Updated:  03/2008 
 
Disable Missed Call 
Backlight 
Default is No. By default, LCD backlight will lit whenever there is a missed call. 
Not for GXP280. 
HEADSET Key Mode 
Set Default mode or choose Toggle Headset/Speaker. Not for GXP2000 
 
Advanced User configuration includes not only the end user configuration, but also advanced configuration 
such as SIP configuration, Codec selection, NAT Traversal Setting and other miscellaneous configuration.  
 
 
Table 15:  Advanced Settings 
Admin  
Password 
Administrator password. Only the administrator can access the “Advanced Settings” and 
“Account Settings” page. Password field is purposely blank for security reasons after 
clicking update and saved. The maximum password length is 25 characters. 
G723 rate 
Encoding rate for G723 codec. By default, 6.3kbps rate is set. 
iLBC frame size 
iLBC packet frame size. Default is 20ms. For Asterisk PBX, 30ms might be required. 
iLBC payload 
type 
Payload type for iLBC. Default value is 97. The valid range is between 96 and 127.  
Silence 
Suppression 
This controls the silence suppression/VAD feature of the audio codec G.723 and G.729. 
If set to “Yes”, when silence is detected, a small quantity of VAD packets (instead of 
audio packets) will be sent during the period of no talking.  If set to “No”, this feature is 
disabled.