User's Manual

Grandstream Networks, Inc. GXV3140 USER MANUAL Page 27 of 83
FIRMWARE VERSION 1.0.1.18 Updated : 09/2009
American standard.
Frequencies should be configured with known values to avoid uncomfortable
high pitch sounds.
Syntax: f1=val,f2=val[,c=on1/off1[-on2/off2[-on3/off3]]];
(Frequencies are in Hz and cadence on and off are in 10ms)
ON is the period of ringing (“On time” in ‘ms’) while OFF is the period of silence.
In order to set a continuous ring, OFF should be zero. Otherwise it will ring ON
ms and a pause of OFF ms and then repeat the pattern. Up to three cadences
are supported.
Ring Cadence This defines the ring cadence for the phone. The default setting is: c=2000/4000;
Advanced Settings/Video Settings
Video frame rate
The Default value is 15 frames/second. The video frame rate is adjustable based
on network conditions.
Increasing the frame rate will increase the amount of transferred data
significantly therefore consuming more bandwidth. Lack of bandwidth will impair
the video due to packet loss.
Video bit rate
The Default value is 128 kbps. The video bit rate is adjustable based on network
conditions.
Increasing the video bit rate may improve video quality if the bandwidth permits.
Otherwise the video quality will be impaired due to packet loss
Video Packet Size
The Default value is 1400, range from 100 to 1400.
It is recommended to use 600~800 if you have an Outbound Proxy or Media
Gateway.
Video Rate Control
Frame or TMN8. The Default setting is Frame.
TMN8 is good for bandwidths larger than 384kbps
Video Frame Skipping
Skips bad video frames as they are received
The Default setting is NO.
Advanced Settings/Application Settings
Weather Update This allows the user to set their preferred location for the weather forecast.
City (Zip Code): Enter the zip code of the city the user wishes to receive weather
updates.
Refresh Interval (m): Set the interval for weather updates.
Degree Units: Lets you specify the temperature to be measured in Fahrenheit or