Grandstream Networks, Inc. GXV3175 USER MANUAL Page 40 of 119
FIRMWARE VERSION 1.0.0.32 Updated : 12/2010
RTCP. For video, channel 0 will use port_value+2 for RTP and port_value+3
for its RTCP; channel 1 will use port_value+6 for RTP and port_value+7 for
RTCP. The default value is 5004.
Use Random Port
When set to YES, this parameter will force random generation of both the
local SIP and RTP ports. This is usually necessary when multiple
GXV-3175s are behind the same full cone NAT. The Default setting is YES.
(This parameter must be set to NO before Direct IP Calling will work)
Keep-alive Intervals (s)
This parameter specifies how often the GXV-3175 sends a blank UDP
packet to the SIP server in order to keep the “ping hole” on the NAT router to
open. The default setting is 20 seconds.
STUN Server
The IP address or Domain name of the STUN server. STUN resolution
results are displayed in the STATUS page of the Web UI. Only
non-symmetric NAT routers work with STUN.
Default STUN server: stun.ipvideotalk.com
Use NAT IP The NAT IP address used in SIP/SDP messages. This field is blank at the
default settings. This should ONLY be used if your ITSP requires it.
SSL Certificate This defines the SSL certificate needed to access certain websites.
SSL Private Key This defines the SSL Private key.
SSL Private key Password This defines the SSL private key password.
Advanced Settings/Call Features
Disable Call-Waiting The default setting is No. If set to Yes, the call waiting feature will be
disabled.
Disable Call-Waiting Tone The default setting is No. If set to Yes, the call waiting tone will be disabled.
Disable Direct IP Call The default setting is No. If set to Yes, Direct IP calling will be disabled.
Offhook Auto Dial Configure a User ID/extension to dial automatically when the phone is taken
offhook. By default, the phone will use the first account to dial out.
Advanced Settings/Video Settings
Enable Motion Detection
The phone will exit idle/screensaver mode if motion is detected. The default
setting is Yes.
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
