Grandstream Networks, Inc. GXW4024 User Manual Page 31 of 35
Firmware 1.0.1.8 Last Updated: 5/2008
Jitter Buffer
Length
Select Low, Medium or High based on network conditions.
SRTP Mode Default is Disabled. Other options are Enabled but not forced, and Enabled and forced.
It uses SDP Security Description to exchange key. Please refer
SDES: http://www.apps.ietf.org/rfc/rfc4568.html
SRTP: http://www.apps.ietf.org/rfc/rfc3711.html
SLIC Setting
Depends on standard phone type and locations.
Caller ID Scheme
Select the value according to the local Telco standard where the GXW4024 is installed.
Please refer to the pull down list to select.
Polarity Reversal Default is No. If set to “Yes”, polarity will be reversed upon call establishment and
termination.
Loop Current
Disconnect
Set to Yes if the traditional PBX you are using with GXW4024 uses this method for signaling
call termination. Default is No.
Loop Current
Disconnect
Duration
Default is 200. In 100 - 1 0000 milliseconds range.
Hook Flash timing
Time period when the cradle is pressed (Hook Flash) to simulate FLASH. To prevent
unwanted activation of the Flash/Hold and automatic phone ring-back, adjust this time value.
On Hook Timing
On-hook timing is the minimum time for an on-hook event to be validated.
Gain
Handset volume adjustment. RX is for receiving volume (direction FXSÆto analog phone),
TX is for transmission volume (Analog phoneÆ to FXS).
Default values are 0dB for both parameters. Loudest volume: +6dB Lowest volume: -6dB.
Ring Tones Configure ring cadences according to preference.
SAVING THE CONFIGURATION CHANGES
After user makes a change to the configuration, press the “Update” button in the Configuration Menu. The
web browser will then display a message window to confirm saved changes.
Grandstream recommends reboot or power cycle the IP phone after saving changes.
R
EBOOTING FROM REMOTE
Press the “Reboot” button at the bottom of the configuration menu to reboot the phone remotely. The web
browser will then display a message window to confirm that reboot is underway. Wait 30 seconds to log in
again.
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