GXV3140 USER MANUAL www.grandstream.com
SOFTWARE VERSION 1.0.0.44 support@grandstream.com
provisioning system, GUI interface, phone book, remote software
(TFTP/HTTP) upgrade for deployed devices including those behind a
NAT/firewall.
Provisioning Support for automatic NAT/firewall traversal & 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 Full duplex speaker，advanced DSP；
Support G.723.1，G.729A/B,G.711μ/A (PCMU/PCMA), G.726-
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)；
4.3” digital TFT color LCD with 480x272 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），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