Grandstream Networks GXP Series - Grandstream GXP Advanced Settings; Grandstream GXP PC Port Mode Configuration; GXP Admin Password Configuration; GXP Codec Rate and Frame Size Settings

Grandstream Networks, Inc. GXP User Manual Page 30 of 43
Firmware 1.2.4.3 Last Updated: 09/2010
PC Port Mode
For GXP1200/GXP280 only. Default is ‘Switch’. Choose to toggle between
Switch/Hub mode.
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.