Grandstream GVR3550 User Manual - Manual (Page 26)

Grandstream Networks, Inc. GVR3550 User Manual Page 26 of 120
Firmware Version 1.0.0.65 Last Updated: 10/2014
GVR3550 BACK PANEL
Figure 11: GVR3550 Back Panel
Table 7: GXV3550 Back Panel Explanation:
# Icon Name Explanation
1 Power Input Power interface, input 12V DC.
2 Reset Button
To reboot device or reset factory.

Long press for more than 10 seconds: factory reset.
 Press when power on, reset when the GVR is
abnormal.
3 eSATA Interface To connect eSATA device
4 USB Interface To connect to USB devices, like mouse, keyboard and
USB flash drive.
5 VGA Output Output analog video signal, connecting to a monitor to view
the video.
6 HDMI Output HD audio/video output interface, transmit uncompressed
HD video and multi-camera audio data to the display
device with HDMI interface.
7 Audio Input Audio input interface, receiving analog audio signal from
microphone and other devices.
8 Audio Output Output analog audio signal to device like Speaker
9 Network Port 10M/100M/1000M adaptive Ethernet interface.
10 Alarm Input
1～16
16 alarm input interface, receiving binary signals of
external alarm like normally-closed alarm and normally-
open alarm.
When electrify the alarm input device with external power,
the device should be common-grounded with the GVR.