Grandstream Networks GVR3550 User manual

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Grandstream Networks, Inc.
GVR3550 Network Video Recorder

GVR3550 USER MANUAL
Grandstream Networks, Inc. GVR3550 User Manual Page 1 of 76
Firmware Version 1.0.0.0 Last Updated: 10/2013
Table of Contents
GVR3550 User Manual
CHNGEE LOG................................................................................................................ 7
FIRMWARE VERSION 1.0.0.33..................................................................................................................7
FIRMWARE VERSION 1.0.0.33..................................................................................................................7
WELCOME ................................................................................................................. 8
PRODUCT FEATURES ................................................................................................................................8
SAFETY COMPLIANCE...............................................................................................................................9
WARRANTY..............................................................................................................................................10
INSTALL GVR3550 ................................................................................................... 11
EQUIPMENT PACKAGE CONTENTS........................................................................................................11
DEVICE CONNECTION.............................................................................................................................14
INSTALLING HDD..........................................................................................................................14
ROUTE CONNECTION...................................................................................................................15
NETWORK CONNECTION............................................................................................................16
EXTERNAL USB DEVICE..............................................................................................................17
CONNECT HDMI MONITOR(TBD) ..............................................................................................18
CONNECT VGA MONITOR ...........................................................................................................18
CONNECT ALARM DEVICE .........................................................................................................18
EXTERNAL INTERCOM DEVICE (TBD).....................................................................................18
GET TO KNOW THE GVR3550............................................................................. 19
SOFTWARE SPECIFICATIONS.................................................................................................................19
HARDWARE SPECIFICATIONS................................................................................................................20
IR REMOTE CONTROL OPERATIONS.....................................................................................................21
USB MOUSE AND KEYBOARD.................................................................................................................23
INPUT METHOD ......................................................................................................................................23
USING THE WIZARD（TBD）................................................................................................................25
LOGIN .......................................................................................................................................................25
LOCAL PREVIEW .....................................................................................................................................25
PREVIEW STATUS..........................................................................................................................26
BASIC PREVIEW OPERATION .....................................................................................................27
IMAGE CONFIGURATION ............................................................................................................28
USE PTZ ...........................................................................................................................................29
RIGHT-CLICK..................................................................................................................................31
SHORTCUT BUTTON.....................................................................................................................32

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LOCAL PLAYBACK....................................................................................................................................32
SEARCH RECORD..........................................................................................................................32
RECORD PLAYBACK.....................................................................................................................34
MAIN MENU.............................................................................................................................................36
RECORD CONFIGURATION .........................................................................................................36
CHANNEL MANAGEMENT ..........................................................................................................39
ALARM CONFIGURATION ...........................................................................................................42
NETWORK SETTINGS ...................................................................................................................44
STATUS ............................................................................................................................................47
SYSTEM SETTINGS .......................................................................................................................49
MAINTENANCE..............................................................................................................................54
LOGOUT....................................................................................................................................................60
WEB MANAGEMENT ............................................................................................ 61
OVERVIEW ...............................................................................................................................................61
SYSTEM LOGIN ........................................................................................................................................61
WEB PAGE INTRODUCTION ...................................................................................................................62
LIVE PREVIEW ...............................................................................................................................62
PLAYBACK......................................................................................................................................64
SETTINGS ........................................................................................................................................64
FIRMWARE UPDATE ............................................................................................ 65
DOWNLOAD CONFIGURATION FILE......................................................................................................65
CONFIGURING SERVER...........................................................................................................................65
CONFIGURING TFTP SERVER.................................................................................................................66
CONFIGURING HTTP SERVER ................................................................................................................68
UPDATE WITH TFTP SERVER.................................................................................................................69
UPDATE WITH HTTP/HTTPS SERVER ..................................................................................................69
MANUAL UPDATE....................................................................................................................................69
FACTORY RESET ................................................................................................... 70
RESET VIA LOCAL GUI ............................................................................................................................70
RESET VIA WEB PAGE.............................................................................................................................70
RESET VIA BUTTON ................................................................................................................................70
EXPERIENCING GVR3550.................................................................................... 71
APPENDIX ................................................................................................................ 71
FAQs..........................................................................................................................................................71
MAINTENANCE........................................................................................................................................75
RECORD TIME CALCULATION................................................................................................................75

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Table of Contents
GVR3550 User Manual
Figure 1 : GVR3550 Front Panel...........................................................................................................12
Figure 2 : GVR3550 Back Panel Specifications ...............................................................................13
Figure 3 : GVR3550 HDD Installation Procedures..........................................................................15
Figure 4 : GVR3550 Route Connection...............................................................................................16
Figure 5 : GVR3550 Network Information .......................................................................................16
Figure 6 : GVR3550 USB Access Status ...............................................................................................17
Figure 7 : GVR3550 HDD Management ............................................................................................17
Figure 8 : GVR3550 IR Remote Control..............................................................................................21
Figure 9 : GVR3550 Soft Keyboard---English Input Method .......................................................23
Figure 10 : GVR3550 Soft Keyboard---Chinese Input Method....................................................24
Figure 11 : GVR3550 Soft Keyboard---Symbols and Numbers ...................................................24
Figure 12 : GVR3550 Soft Keyboard---- Numeric Keyboard .......................................................24
Figure 13 : GVR3550 Live View Page---Right-click Menu ............................................................25
Figure 14 : GVR3550 Local Login Page ..............................................................................................25
Figure 15 : GVR3550 Abnormal Alarm Prompt ..............................................................................27
Figure 16 : GVR3550 Basic Preview Operations ............................................................................27
Figure 17 : GVR3550 Image Configuration Page ............................................................................28
Figure 18 : GVR3550 PTZ Control Page .............................................................................................29
Figure 19 : GVR3550 PTZ Control Page---Preset ............................................................................30
Figure 20 : GVR3550 PTZ Control Page---Patrol .............................................................................30
Figure 21 : GVR3550 PTZ Control Page---Contrail .........................................................................31
Figure 22 : GVR3550 Right-mouse Menu ..........................................................................................31
Figure 23 : GVR3550 Preview Page Shortcut Button ....................................................................32
Figure 24 : GVR3550 Record Playback Page ....................................................................................32
Figure 25 : GVR3550 Record Playback - Record Status Toolbar ................................................33
Figure 26 : GVR3550 Record Playback Page- Search by Tag.......................................................34
Figure 27 : GVR3550 Tag Management Page...................................................................................34
Figure 28 : GVR3550 Record Playback Toolbar ..............................................................................34
Figure 29 : GVR3550 Save Snapshot Failed Prompt ......................................................................35
Figure 30 : GVR3550 Tagging Management ...................................................................................35
Figure 31 : GVR3550 Locked Record Management .....................................................................36
Figure 32 : GVR3550 Record Save Path Settings Page ..................................................................36
Figure 33 : GVR3550 Main Menu Page...............................................................................................36
Figure 34 : GVR3550 Record Channel Settings Page.....................................................................37
Figure 35 : GVR3550 Record Plan Settings Page.............................................................................37

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Figure 36 : GVR3550 Add New Record Plan Page .........................................................................37
Figure 37 : GVR3550 Add New Record Plan Page---Duplicate Time Interval .......................38
Figure 38 : GVR3550 Record Plan Display Page..............................................................................38
Figure 39 : GVR3550 Record Policy Configuration Page .............................................................38
Figure 40 : GVR3550 Channel Config Page .......................................................................................39
Figure 41 : GVR3550 Manual Add Channel.......................................................................................39
Figure 42 : GVR3550 Encoding Config ...............................................................................................40
Figure 43 : GVR3550 IPC Event Config Page.....................................................................................41
Figure 44 : GVR3550 IPC Arming Time Settings Page ..................................................................41
Figure 45 : GVR3550 IO Alarm Config Page......................................................................................43
Figure 46 : GVR3550 IO Alarm Config Page......................................................................................43
Figure 47 : GVR3550 Abnormal Alarm Settings Page ...................................................................43
Figure 48 : GVR3550 Network Settings---Basic Setting ................................................................44
Figure 49 : GVR3550 Advanced Settings ...........................................................................................45
Figure 50 : GVR3550 UPnP Settings....................................................................................................45
Figure 51 : GVR3550 Server Settings Page .......................................................................................46
Figure 52 : GVR3550 System Information ......................................................................................48
Figure 53 : GVR3550 Network Status..................................................................................................48
Figure 54 : GVR3550 HDD INFO ...........................................................................................................48
Figure 55 : GVR3550 Device Status Page ...........................................................................................48
Figure 56 : GVR3550 Basic System Settings.....................................................................................49
Figure 57 : GVR3550 Display Settings Page......................................................................................50
Figure 58 : GVR3550 Local View Control ..........................................................................................50
Figure 59 : GVR3550 Local View Control--- Channel Application .............................................51
Figure 60 : GVR3550 HDD Management ...........................................................................................51
Figure 61 : GVR3550 Property Editing Page ..................................................................................52
Figure 62 : GVR3550 User Management Page.................................................................................52
Figure 63 : GVR3550 Add a User ..........................................................................................................52
Figure 64 : GVR3550 Editing User Info Page .................................................................................53
Figure 65 : GVR3550 Editing Normal User Info Page .................................................................53
Figure 66 : GVR3550 Editing Operator User Info Page ..............................................................53
Figure 67 : GVR3550 S.M.A.R.T Detection Page ..............................................................................55
Figure 68 : GVR3550 HDD Bad Sector Detection Page .................................................................56
Figure 69 : GVR3550 System Log Page...............................................................................................56
Figure 70 : GVR3550 Record Backup Page.......................................................................................57
Figure 71 : GVR3550 Quick Backup Page .........................................................................................57
Figure 72 : GVR3550 Quick Backup Progress ...............................................................................57
Figure 73 : GVR3550 Search Backup Page........................................................................................58
Figure 74 : GVR3550 Import/Export Configuration File ...........................................................59
Figure 75 : GVR3550 Update Configuration Page...........................................................................59
Figure 76 : GVR3550 Upgrade Status Page ........................................................................................60

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Figure 77 : GVR3550 Factory Reset Page..........................................................................................60
Figure 78 : GVR3550 Web Page---Login ..........................................................................................61
Figure 79 : GVR3550 Web Page--- System Menu ............................................................................62
Figure 80 : GVR3550 Remote Real-time Preview Page ................................................................62
Figure 81 : GVR3550 Remote Record Preview Window ..............................................................62
Figure 82 : GVR3550 Web Page---Channel Preview ....................................................................63
Figure 83 : GVR3550 Web Page---Record Playback .....................................................................64
Figure 84 : GVR3550 Web Page---Basic Settings Page ..................................................................64
Figure 85 : GVR3550 Web Page- Maintenance Menu....................................................................65
Figure 86 : TFTP Server Page................................................................................................................66
Figure 87 : TFTP Dialog...........................................................................................................................67
Figure 88 : TFTP Server Directory Settings......................................................................................67
Figure 89 : Confirm Modification.........................................................................................................68
Figure 90 : GVR3550 Remote Manual Upgrade...............................................................................69
Figure 91 : GVR3550 Factory Reset on Local GUI Page ................................................................70
Figure 92 : GVR3550 Factory Rest on Local Web Page .................................................................70

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TABLE OF TABLES
GVR3550 User Manual
Table 1 : GVR3550 Software Specifications ......................................................................................20
Table 2 : GVR3550 Hardware Specifications ...................................................................................21
Table 3 : GVR3550 Soft Keyboard Specifications............................................................................24
Table 4 : GVR3550 Preview Channel Status Specifications..........................................................26
Table 5 : GVR3550 Preview Page Specifications.............................................................................27
Table 6 : GVR3550 Abnormal Alarm Specifications.......................................................................27
Table 7 : GVR3550 PTZ Control Specifications ................................................................................29
Table 8 : GVR3550 Email Settings Parameters Specifications...................................................47
Table 9 : GVR3550 Network Diagnosis Page.....................................................................................54
Table 10 : GVR3550 Network Diagnosis Specifications................................................................55
Table 11 : GVR3550 Web Page---Channel Preview Specifications............................................64

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CHNGEE LOG
Only major new features or major document of the GVR3550 updates are listed here. Minor updates for
corrections or editing are not documented here.
FIRMWARE VERSION 1.0.0.33
Snapshots update.
FIRMWARE VERSION 1.0.0.33
This is the initial version.

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WELCOME
Thank you for purchasing Grandstream GVR3550 NVR. The GVR3550 is a NVR product integrating
multi-channel video preview, playback and intelligent alarm monitoring with epoch-making innovation. It is
equipped with perfect hardware platform and vigorous support system, providing the most advanced network
video monitoring solutions and realizing the live view, instant playback, data locking, file security
application. Integrating the leading performance and function in the NVR field, GVR3550 also features
express installation, easy deployment as well as incomparable reliability.
This user manual is designed to help you to understand how to configure and manage the GVR3550
including advanced settings and operating, such as alarm settings and record settings. In order to help users
to configure and manage GVR3550, the manual also introduce its configuration and update procedures in
details.
PRODUCT FEATURES
Supports up to 24 channel with 720p or 12 channel with 1080p HD realtime record
4 channel synchronous local/remote playback ,supports digital zoom in full screen mood and more
than 16 channel remote synchronous preview
Supports Grandstream GXV36XX series camera and compatible camera with ONVIF version
Auto detecting the LAN IP camera
Customized record: schedule record, alarm record, manual record and auto record
The Grandstream patent power storage system handles outage with flexibility
Auto resumes record after restart caused by outage
The previous-recorded video would be overwritten when HDD full
Perfect security mechanism: access control, alarm event, system logs, HDD encryption
Convenient and efficient search record function by time, event, channel and type
Supports up to simultaneous 16 clients remote access the device
Back mode: USB device, External eSATA device or being stored in network or cloud
1 gigabit Ethernet port, HDMI and VGA interface support local HD preview
Alarm input/output port for extended use
Supports 4 SATA HDDs up to 8TB as well as RAID 0, RAID 1 and RAID 10

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SAFETY COMPLIANCE
These instructions are intended to assist users with the operation of the GVR3550 and to instruct on how to
avoid dangerous situations or damage to the device.
Warning: Serious injury or death may be caused if any of the warnings below are neglected.
Caution: Injury or damage to the equipment may occur if any of the following caution messages are
neglected.
Warning: Follow these safe guards to prevent serious injury death.
Caution: Follow these precautions to prevent potential injury or material damage.
Warning:
Input voltage should meet both the SELV(Safety Extra-Low Voltage) and the Limited Power Source with
DC12V according to the IEC60950-1 standard. Please refer to the technical specifications for more details.
Do not use a third-party power adapter or power cord. When the device installed on the wall or ceiling,
make sure that it is firmly attached.
Notice ：
Please ensure stable grounding condition so as to avoid video and audio signal
interference as well as being damaged by static electricity or induced voltage.
Please do not electrify plug the audio/video cables and RS 232; otherwise these ports
can be easily damaged.
Please do not turn off the GVR power switch directly, use the shutdown button on the
front panel (long hold the button for more than 3 seconds) to enable the device to
switch off automatically so as not to damage HDD.
Keep hot reservoir and high temperature environment away from the GVR.
Ensure unit is installed in a well-ventilated environment to facilitate heat dissipation.
Please carry out inspections and maintenance at regular intervals.

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WARRANTY
If the GVR3550 was purchased from a reseller, please contact the company where the device was purchased
for replacement, repair or refund.
If the device was purchased directly from Grandstream, please contact our technical support team for a RMA
(Return Materials Authorization) number before the product is returned.
Grandstream reserves the right to remedy warranty policy without prior notification.
FCC Caution:
Any Changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate the equipment. This device complies with part 15 of the FCC Rules. Operation
is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.
Caution:
Changes or modifications to this product not expressly approved by Grandstream, or operation of this
product in any way other than as detailed by this User Manual, could void your manufacturer warranty.
Please do not use a different power adaptor with the GVR3550 as it may cause damage to the products and
void the manufacturer warranty.
Reproduction or transmittal of the entire or any part, in any form or by any means, electronic or print, for
any purpose is not permitted without the express written permission of Grandstream Networks, Inc.

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INSTALL GVR3550
EQUIPMENT PACKAGE CONTENTS
The GXV3550 package contains:
One(1) Main Case
One(1) 12V Power Adaptor
One(1) Power Cord
One(1) Ethernet Cable
One(1) Remote Control(No Battery )
Sixteen (16)Screws
Four (4) SATA HD
Two (2) A two power line
One (1) Quick Start Guide
To set up a set of GVR, users need to own some equipment listed below:
One (1) Display device (It could be the monitor, displayer or TV wall, choose one of them at least)
At least one (1) Video Acquisition Processing Equipment (Camera combined with encoder or IP
camera device)
Optional keyboard with USB interface
Optional mouse with USB interface
At least one (1) HDD (Compatible SATA is required. The maximum CAPACITY is no more than
2T.)
Optional Audio Devices (Audio input and output devices: acoustics, microphone or pickups, etc.)
Optional Alarm Devices (Alarm input and output devices: smoke detector, infrared detector and
alarm bell, etc.)

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Figure 1: GVR3550 Front Panel
1.
Power indicator
Power indicator
2.
Network Indicator
When the network is abnormal or the GVR has no access to
network, the indicator doesn’t flicker when alarm; the indicator
turns red when the network connection is normal and flickers
green when there is a network data transmission.
3.
HDD Indicator
The indicator turns red to alarm if HDD is abnormal or the HDD
capacity is lower than one certain value. The indicator is green
when HDD runs normally.
4.
Status Indicator
Used to indicate whether the numeric buttons are in other
functional mode. Once being pressed, the numeric buttons will
be used in other functions. The indicator turns green when the
numeric buttons are in functional mode while in numeric mode
the indicator is dark.
5.
USB Interface
Used to connect to USE device like mouse, keyboard and USB
flash drive.
6.
Numeric/
Function Buttons
Used to input numbers. Once the function buttons are pressed,
the numeric buttons will be used as function buttons. Number 0-9
are corresponding to the following function: Enable PTZ
,Start/Pause ,Stop ,Fast Backward ,Fast
Forward ,Single Frame ,Playback ,Record ,Menu
,Multiscreen .
7.
Function Buttons
Used to switch between numeric buttons and function buttons.
The function buttons status will be indicated by the function
status indicator.
8.
Up and Down
Direction Buttons
Used to switch the activated controls or move/skip up or down,
revise setting ,add or subtract numbers.
Auxiliary Function: Navigate the PTZ menu up or down
9.
Left and Right
Direction Buttons
Used to switch the activated controls or move/skip left or right
Controls the progress bar when playback.
Auxiliary Function: Navigate the PTZ menu left or right.

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10.
Cancel Button
Back to the previous menu or cancel operation.
Back to realtime monitoring state when playback.
11.
Confirm Button
Confirm
Switch to the default button
Enter menu
Switch between checkbox and ON/OFF button
Pause/Restore auto patrol in the auto patrol preview mode
Figure 2: GVR3550 Back Panel Specifications
1.
Power Input Interface
Power interface, input 12V DC.
2.
Reset Button
Used to reboot device or reset factory
Press: Reboot
Long press for more than 10 seconds: factory reset
Press when powered on: reset when the unit is abnormal.
3.
eSATA Interface
Used to connect eSATA
4.
USB Interface
Used to connect to USB devices like mouse, keyboard and
USB flash drive.
5.
VGA Video Out
Output analog video signal, could be connected to a
monitor to view the analog video.
6.
HDMI Interface
HAD and HD video output interface, transmit
uncompressed HD video and multi-channel audio data to
the display device with HDMI interface.
7.
Audio Input Interface
Voice intercom input interface, receive analog audio signal
from microphone, pickups and other equipment.
8.
Audio Output Interface
Output analog audio signal to device like speakers.
9.
Network Interface:
10M/100M/1000M adaptive Ethernet interface, connect
cables.

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10.
Alarm Input Interface
1 ～ 16:
16 alarm input interface, receiving binary signals of
external alarm like Normally-closed alarm and
normally-open alarm.
When applying the external power to electrify the alarm
input device, the latter should be common-grounded with
the GVR.
11.
Alarm output Interface
1 ～ 2:
2 sets alarm output interface, output alarm signal to the
external alarm device, power supply is required for
external alarm device.
12.
Alarm Grounding
Interface:
Public alarm input grounding interface
13.
Grounding:
Grounding
14.
FAN:
Used for heat dissipation
DEVICE CONNECTION
The GVR3550 contains no HDD with packaging, users need to check the device and install HDD when use it
the first time.
INSTALLING HDD
We suggest to use the recommended models by Grandstream( 7200 RPM HDD and above), the PC HDD is
not recommended.
Please install the GVR3550 HDD according to the following procedures:
1. Twist four screws gently on the bottom of the HDD, don’t twist too tight.
2. Remove the fixed screws on the back and side panel of the device, open the cover plate to find the HDD
installing position.
3. Side put the main case, Aim the HDD with four screws at the corresponding round holes on the baseplate
then push the screws to the screw holes to stick them.
4. Twist the screws.
5. Repeat the previous steps to install other HDDs(install one HDD next to the other with connected HDD
cables ).
6. Plug in four HDD cables and power cables to the interfaces of the mainboard .
7. Put the cover plate back to GVR and twist the screws.

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Figure 3: GVR3550 HDD Installation Procedures
NOTE:
HDD does not support hot plug. When the GVR3550 is running, plug the HDD will result in the
HDD read and write data errors or unable to identify. Grandstream will take no responsibility for
the damage.
ROUTE CONNECTION
Please connect the GVR3550 route according to the following procedures:
1. Install the GVR3550 HDD by reference to the steps in installing HDD procedures.

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2. Install the cables and connect to the display device interface.
3. Connect the mouse, keyboard, alarm input and output devices (optional).
4. Power on the related devices(GVR3550, display device, alarm, etc.) after connecting to the power cable.
5. The GVR3550 is about to power up and the indicators flickers.
6. When all devices have been powered on successfully, the connection has been completed.
GVR3550 route connection is shown in figure 4:
Figure 4: GVR3550 Route Connection
NETWORK CONNECTION
Users could login the local page with the administrator account after connecting the network cable to the
GVR3550, go to Main Menu ->System Information -> Network Information to check the network
connection status including IP address and network send/receive rate as shown in figure 5. For details, please
refer to the chapter “Network Information”.
Figure 5: GVR3550 Network Information

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EXTERNAL USB DEVICE
GVR3550 USB interface could be used to connect the mouse and keyboard, or connect a USB storage
device.
NOTE:
The voltage of the USB interface on the front panel of the GVR3550 is a little higher than the one on
the the rear panel, it is suggested that the USB interface on the rear panel connect to USB mouse
and keyboard while the one on the front panel connect to USB storage devices.
PLUG INTO USB MOUSE/KEYBOARD
Users could manipulate the mouse and keyboard to test whether the installation is successful or not after
plugging them into the GVR3550. The mouse or keyboard might be not compatible with GVR3550 if can't
be detected, please replace the mouse or keyboard and try again.
PLUG INTO USB STORAGE DEVICE
Users could go to Maintenance->Network Diagnosis, select “Refresh”in “Packet Capture ”entry to check
the USB status after inserting the USB storage device into the interface properly.
Figure 6: GVR3550 USB Access Status
INSTALLING eSATA
Inset the eSATA cable to the corresponding interface on the rear panel of the GVR3550, Power up eSATA
or use USB cable to supply power (the connection mode is in accordance with eSATA specification).Users
could go to Main Menu->System Settings->HDD Management to view details like HDD Space,Free Space,
HDD Status, HDD Type and so on after installing eSATA. For details, please refer to the chapter “HDD
Management”.
Figure 7: GVR3550 HDD Management

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CONNECT HDMI MONITOR(TBD)
Connect one end of the HDMI cable to the port on the rear panel of the GVR3550, and the other end to the
corresponding port of the HDMI monitor. Once powered on, a splash screen appears on the monitor.
GVR3550 can automatically adapt to HDMI monitor with 1080p and 720p resolution.
CONNECT VGA MONITOR
Connect one end of the VGA cable to the port on the rear panel of the GVR3550, and the other end to the
corresponding port of the VGA monitor. Once powered on, a splash screen appears on the monitor.
NOTE:
VGA doesn’t support automatic resolution matching.
There is only one valid output when connected with VGA and HDMI monitor at the same time. On
this occasion, HDMI is valid while VGA is not by default. Users can also go to System
Settings->Display to set parameters like Screen Resolution, Brightness,Contrast,Saturation and
Hue.
CONNECT ALARM DEVICE
Alarm input/output device connection procedures are as follows:
1. Connect the alarm input device to the alarm input port.
2. Connect the alarm output device to the alarm output port.
3. Enter the GVR3550 main menu, make corresponding settings to alarm input/output on the Alarm Settings
page. Alarm serial number 1 corresponds to the first alarm input channel on the GVR3550 I / 0 port.The
following numbers keep to the same matching sequence. Set normally-opened alarm and
normally-closed alarm according to the corresponding generated high /low level input when there is an
alarm.
4. Set alarm output on the Alarm Settings page. Alarm output 1 corresponds to the first alarm output channel
on the GVR3550.The following numbers keep to the same matching sequence.
EXTERNAL INTERCOM DEVICE (TBD)

GVR3550 USER MANUAL
Grandstream Networks, Inc. GVR3550 User Manual Page 19 of 76
Firmware Version 1.0.0.0 Last Updated: 10/2013
GET TO KNOW THE GVR3550
SOFTWARE SPECIFICATIONS
Name
Specifications
Video Record
Supports synchronous 24 channel 720p (with 1280x720 resolution)
record or 6 channel 1080p (with 1920x1080 resolution) record
Record Rate
Supports a maximum of 48 Mbps record rate
Record Mode
Supports Continuous Record, Scheduled Record, Alarm Record and
Manual Record
Video
Encoding
H. 264 baseline, main or higher.
Video
Encoding
synchronous Audio & Video record
Audio
Encoding
G.711, G.726
Live View
Supports synchronous HDMI or VGA 4 channel 720p or 2 channel
1080p output
Up to synchronous 16 channel remote live view
Playback
Supports synchronous local or remote 4 channel video playback.
Trigger Event
Alarm
Trigger modes: Manual Alarm, Scheduled Alarm, IPC alarm, I/O alarm,
Event Alarm and Abnormal Alarm
Intelligent Retr
ieval
Intelligent retrieval modes: Retrieval by Date & Time, Motion Detection,
Missing Object Detection, Foreign Object detection,Camera Lens
Occlusion, Video Loss, ect.
Storage
Supports up to 8 TB encrypted storage
RAID
RAID
Supports RAID 0, RAID 1 or RAID 10
Redundancy
Supports record backup to USB,eSATA or network backup
QoS
Supports Diff-Serv, TOS, 802.1P/Q VLAN tagging
Protocol
Supports HTTP, HTTPS, ONVIF protocol