User's Manual

Grandstream Networks, Inc. GXV3140 USER MANUAL Page 11 of 83
FIRMWARE VERSION 1.0.1.18 Updated : 09/2009
“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
waiting indicator, downloadable custom ring tone.
Caller ID（Privacy）
Private header support for anonymous calls.
Firmware Upgrade Configuration file authentication (before accepting changes);
TFTP/HTTP upgrade support, allows users to specify different URLs for the
server to download from.
Advanced Server
Features
DNS SRV support, SIP server failure transfer, message waiting indicator and
custom screensaver.
Security
MD5 and MD5-sess DIGEST encoding and authentication；
Security protection: SIP over TLS and SRTP.