IP Phone User's Manual

GXV3140 USER MANUAL www.grandstream.com
SOFTWARE VERSION 1.0.0.44 [e-mail]
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/Time Settings
NTP Server
This parameter defines the URL or IP address of the NTP (Network Time
Protocol) server. The GXV3140 phone may obtain the date and time from the
server.
The default setting is ntp.ipvideotalk.com .
DHCP Option 42
override NTP server
Select Yes for the user to allow DHCP Option 2 to override the NTP server if
there is one on the LAN. The default setting is NO.
Time Zone This parameter controls the date/time display according to the specified time
zone.
Self-Defined Time
Zone
This parameter allows the users to define their own time zone.
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 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