Grandstream Networks GXV3140 User Manual page 12

Audio Features
Video Features
Call Handling Features
Caller ID (Privacy)
Firmware Upgrade
Advanced Server Features
Security
FIRMWARE VERSION 1.0.7.60
Support for IETF STUN NAT traversal and symmetric RTP; Static IP or
DHCP.
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.
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.
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. PSTN calls via
FXO ports.
Private header support for anonymous calls.
Configuration file authentication (before accepting changes).
TFTP/HTTP upgrade support, allows users to specify different URLs for the
server to download from.
DNS SRV support, SIP server failure transfer, message waiting indicator
and custom screensaver.
MD5 and MD5-sess DIGEST encoding and authentication.
Security protection: SIP over TLS and SRTP.
Support for OpenVPN for increased security and control.
GXV3140 USER MANUAL Page 12 of 153