Grandstream Networks GXV3175 Advanced Settings/Call Features, Advanced Settings/Video Settings

		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
Grandstream Networks, Inc.		GXV3175 USER MANUAL	Page 40 of 119
		FIRMWARE VERSION 1.0.0.32	Updated : 12/2010