Grandstream Networks GXV3175 manual ICMP, DNS, DHCP, NTP/SNTP, Tftp

Lines	Three individual SIP accounts.
Protocol Support	SIP 2.0, UDP/IP, PPPoE, RTP/RTCP, SRTP by SDES, HTTP, ARP/RARP,
	ICMP, DNS, DHCP, NTP/SNTP, TFTP.
Display	7” resistive touch screen LCD with 800 x 480 resolution.
Network Interfaces	Dual switched 10M/100M auto-sensing Ethernet ports, 2 x USB 2.0 port,
	1 x audio/video output port (to synchronize output video to TV), stereo
	headset jack.
Device Management	Layer 2 QoS (IEEE 802.1p/Q tagging-VLAN) and Layer 3 QoS (ToS,
	DiffServ, MPLS), web interface or via secure (AES encrypted) central
	configuration file for mass deployment, auto/manual provisioning system,
	remote software (TFTP/HTTP/HTTPS) upgrade for deployed devices
	including those behind NAT/firewall.
Provisioning	- Support for automatic NAT/firewall traversal and remote automatic
	software upgrade and security, providing end-users with “zero
	configuration” and true “plug-and-play” functionality.
	- Support for remote configuration monitoring and syslog.
	- Configuration through LCD, web browser or an external configuration file.
	- Support for IETF STUN NAT traversal and symmetric RTP, Static IP or
	DHCP.
Audio Features	- HD handset and full duplex speaker, advanced DSP.
	- Supports G.723.1, G.729A/B,G.711μ/A (PCMU/PCMA), G.726-32,G.722,
	GSM-FR, L15-256 DTMF (In-audio, RFC2833, SIP Info); Silence
	suppression, VAD, CNG, AGC, masking for packet loss/delay; AEC, AGC
	for Speaker; jitter buffer protocol.
Video Features	- Support for Jitter Buffer delay and packet loss concealment to enhance
	audio and video quality.
	- Support for H.263/H.263+ and H.264 real-time video codecs (CIF or
	QVG) up to 30frames/sec, which ensures high quality video transmission
	even under low bandwidth conditions (32kbps-1Mbps).
	- 7” resistive touch screen LCD with 800 x 480 resolution, 45 degree
	rotating lens (perpendicular), advanced VGA CMOS camera and sensor.
	- Anti-flickering of images, auto focus, auto exposure, zoom (2x optical 2x
	digital ), PIP(Picture-in-Picture) , audio mute, camera block, call log, video
	phone book, screensaver, still picture capture/store (VGA) and visual voice
	message indicator.
Call Handling Features	Caller ID, call waiting ID, call waiting/flash, call transfer, call holding, call
	forwarding, Do-Not-Disturb, three-way conference, redial, automatic
	dialing on off-hook, automatic answering, call records, volume control,
	voice message waiting indicator, downloadable custom ring tone,
	switchable handset/headset/speaker during call.
Grandstream Networks, Inc.	GXV3175 USER MANUAL	Page 9 of 119
	FIRMWARE VERSION 1.0.0.32	Updated : 12/2010