PUSR USR-G816 User manual

USR-G816 User Manual
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Industrial 5G Router
(Cost effective)
Be Honest & Do Best
Your Trustworthy Smart Industrial IoT Partner
User Manual
USR-G816
V2.0

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Content
1. Introduction ...............................................................................................................................................- 5 -
1.1. Features............................................................................................................................................- 5 -
1.2. Parameters table...............................................................................................................................- 6 -
1.3. Indicator introduction........................................................................................................................- 7 -
1.4. Dimension ........................................................................................................................................- 8 -
2. Get Started.................................................................................................................................................- 8 -
2.1. Login router ......................................................................................................................................- 8 -
2.2. Brief introduction of the webpage .....................................................................................................- 9 -
3. Status & System........................................................................................................................................- 10 -
3.1. Status .............................................................................................................................................- 10 -
3.2. System (Hostname) .........................................................................................................................- 10 -
3.3. Administration password ................................................................................................................- 11 -
3.4. Reboot timer (Timed restart function) .............................................................................................. - 12 -
3.5. NTP service .....................................................................................................................................- 12 -
3.6. HTTP port ........................................................................................................................................ - 13 -
3.7. System log......................................................................................................................................- 14 -
3.8. Backup/Upgrade.............................................................................................................................- 15 -
3.9. Reboot............................................................................................................................................- 16 -
4. Network introduction................................................................................................................................ - 17 -
4.1. WAN interface.................................................................................................................................- 17 -
4.1.1. WAN_5G interface ..................................................................................................................- 17 -
4.1.2. WAN_WIRED interface.............................................................................................................- 17 -
4.2. LAN interface ..................................................................................................................................- 20 -
4.3. Cellular network.............................................................................................................................. - 21 -
4.3.1. Configuration.........................................................................................................................- 21 -
4.3.2. SIM1/SIM2 configuration ........................................................................................................- 22 -
4.3.3. Module information ............................................................................................................... - 24 -
4.4. Network switch ...............................................................................................................................- 24 -
4.5. Wireless (Wi-Fi) ............................................................................................................................... - 25 -
4.5.1. Wi-Fi settings of 2.4 & 5.8G .....................................................................................................- 25 -
4.5.2. Client information ..................................................................................................................- 26 -

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4.6. WWAN(STA).....................................................................................................................................- 27 -
4.6.1. Basic settings.........................................................................................................................- 27 -
4.6.2. 2.4G / 5.8G settings................................................................................................................ - 27 -
4.6.3. AP information....................................................................................................................... - 29 -
4.7. DHCP introduction...........................................................................................................................- 30 -
4.8. Static routes.................................................................................................................................... - 30 -
4.8.1. Static routing adding.............................................................................................................. - 30 -
4.8.2. Router table...........................................................................................................................- 31 -
4.9. WAN/LAN port switching ................................................................................................................. - 32 -
4.10. Network diagnostics...................................................................................................................... - 33 -
5. VPN..........................................................................................................................................................- 33 -
5.1. PPTP Client......................................................................................................................................- 33 -
5.2. L2TP Client ......................................................................................................................................- 35 -
5.3. OpenVPN ........................................................................................................................................ - 36 -
5.3.1. OpenVPN client ......................................................................................................................- 37 -
5.3.2. OpenVPN server.....................................................................................................................- 39 -
6. Firewall.................................................................................................................................................... - 39 -
6.1. General Settings.............................................................................................................................. - 39 -
6.2. Port forward....................................................................................................................................- 40 -
6.2.1. Port forward .......................................................................................................................... - 40 -
6.2.2. DMZ function ......................................................................................................................... - 41 -
6.3. Traffic rules.....................................................................................................................................- 42 -
6.3.1. Open ports on router.............................................................................................................. - 43 -
6.3.2. Add new forward rule ............................................................................................................- 44 -
6.3.3. Source NAT ............................................................................................................................ - 45 -
6.4. Access restrictions...........................................................................................................................- 47 -
7. DTU Function............................................................................................................................................- 50 -
7.1. General settings..............................................................................................................................- 51 -
7.1.1. Protocol selection ..................................................................................................................- 51 -
7.1.2. Heartbeat packet ...................................................................................................................- 52 -
7.1.3. Registration packet ................................................................................................................- 52 -
7.1.4. Advanced settings(AT command password) ........................................................................... - 54 -
7.2. Serial port settings ..........................................................................................................................- 54 -

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7.2.1. Parameter description............................................................................................................- 54 -
7.2.2. Packeting mechanism ............................................................................................................- 55 -
7.3. SOCKET ........................................................................................................................................... - 56 -
7.4. HTTP Client......................................................................................................................................- 58 -
7.5. Modbus gateway setting and test....................................................................................................- 59 -
7.6. Transparent data communication.................................................................................................... - 61 -
8. Additional services...................................................................................................................................- 63 -
8.1. PUSR Cloud .....................................................................................................................................- 63 -
8.1.1. Add USR-G816 on PUSR Cloud ................................................................................................- 63 -
8.1.2. Gateway Information .............................................................................................................- 65 -
8.1.3. Remote access.......................................................................................................................- 66 -
8.1.4. Firmware upgrade .................................................................................................................- 67 -
8.1.5. Alarm settings........................................................................................................................- 68 -
8.2. DDNS ..............................................................................................................................................- 70 -
9. Contact Us................................................................................................................................................ - 73 -
10. Disclaimer.............................................................................................................................................. - 73 -

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1. Introduction
1.1. Features
Stable and reliable
◆Industrial grade design for harsh environments, IP30 mental housing.
◆Support DIN rail mounting, wall mounting and flat surface placement.
◆Wide input voltage range 9~36VDC, reverse polarity protection.
◆Multiple EMC protection: Surge, EFT and ESD protection
◆Built-in hardware watchdog, fault self-detection and self-repair, to ensure system stability.
Flexible networking
◆Dual sim cards, single standby.
◆Supports 5G SA/NSA network, compatible with 4G/3G network.
◆Equipped with gigabit Ethernet ports: 1*WAN/LAN (Switchable), 3*LAN.
◆Equipped with 1*RS232/RS485 serial port which can be directly connected to sensors and other serial
acquisition devices for data transmission.
◆Optional GNSS function, realize precise positioning of assets.
◆Supports dual band Wi-Fi, adopting Qualcomm chip.
Powerful function
◆Supports 5G APN/VPDN sim cards.
◆Supports worldwide main frequency band with 4G network backup.
◆Support Modbus TCP/RTU protocol conversion，transparent TCP/UDP/HTTP data communication.
◆Built-in ICMP keep-alive detection, heartbeat packet detection and other functions to ensure the
stable operation of the device.
◆Supports firewall, NAT, DMZ, port forwarding, access restriction, etc. to ensure data security.
◆Cooperating with PUSR service, it can realize centralized management of remote equipment and
improve operation and maintenance efficiency.
◆Supports mainstream VPN: PPTP, L2TP and enhanced OpenVPN.

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1.2. Parameters table
Table 1. Parameters of USR-G816
USR-G816 specifications
Cellular
Interface
Frequency
5G NR sub-6 GHz (3GPP Rel-16)
Band(NA/NSA):
n1/2/3/5/7/8/12/13/14/18/20/25/26/28/29/30/38/40/41/48/66/70/71/75/76/77/78/ 79;
4G LTE (CAT 19 DL / CAT 18 UL)
LTE-FDD: B1/2/3/4/5/7/8/12/13/14/17/18/19/20/25/26/28/29/30/32/66/71;
LTE-TDD: B34/38/39/40/41/42/43/48;
LAA: B46;
3G WCDMA: B1/2/4/5/8/19
Maximum Transmission
Data Rate
5G SA Sub-6: Max. 2.4Gbps (DL)/Max. 900Mbps (UL);
5G NSA Sub-6: Max. 3.4Gbps (DL)/Max. 550Mbps (UL)
LTE-FDD: Max. 1.6Gbps (DL)/Max. 200Mbps (UL)
WCDMA: Max. 42 (DL)/Max. 5.76 (UL)
Antennas
4 × SMA-K Connectors (Center PIN: SMA Female)
SIM Slot
2 x (3 V/1.8 V) mini-SIM(2FF) Push-push type slot (SIM Card 2 can be configured with built-in
eSIM)
Ethernet Interface
WAN
1 x WAN port (can be configured as LAN) 10/100/1000 Mbps, compliance with IEEE 802.3,
IEEE 802.3u, supports auto MDI/MDIX crossover, Ethernet Isolation 1.5 KV RMS
LAN
3 x RJ45 port, 10/100/1000 Mbps, supports auto MDI/MDIX crossover, Ethernet Isolation 1.5
KV RMS
Indicators
PWR
red, always on after powered on
WORK
green, blinking every 1second when the router is ready and working properly
NET
Mobile network type LEDs
NET lights on after device is connected to the network. Green stands for 5G, green and red
for 4G, and red for 3G
SIG
Mobile signal strength indication LED
Green represents excellent signal, two-color light represents good signal, red represents
poor signal
WLAN
always solid on when WiFi is enabled and working properly
WAN
LED blinking When Connection established and data is being transferred over this port.
LAN
LED blinking When Connection established and data is being transferred over this port.
Wi-Fi Interface
Antennas
2 × SMA-K Connectors (Center PIN: SMA Female)
MIMO
2×2
Standards
Concurrent dual-band 802.11a/n/ac (5.8GHz) and 802.11b/g/n (2.4GHz)
Modes
AP/AP+STA/AP+WDS repeater
Data speed
Up to 1733Mbps wireless operation rate at 5.8GHz
Security
Wi-Fi security with WPA-PSK, WPA2-PSK, Mixed WPA/WPA2-PSK, WPA2-PSK+CCMP
Transmission distance
200 meters by line of sight. Actual transmission distance depends on environment of the
site.
GNSS(Optional)
Antenna
1 × SMA-K Connector (Center PIN: SMA Female)
Technology
GPS, GLONASS, BeiDou, Galileo
Protocol
NMEA 0183
Power Supply
Adapter
DC 12V/2A
Connector
DC Power Jack Barrel Type Female 5.5*2.1mm Round socket or industrial terminal
block(V+,V-),reverse polarity protection

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1.3. Indicator introduction
USR-G816 provides 6 indicators in total, the specific description is as follows.
Table 2. LED indicator
Name
Description
PWR
Steady on: power supply is normal.
Off: No power supply or abnormal power supply.
WORK
Blinking: The system works normally.
SIG
Green: Signal strength 25-31 (signal strong)
Orange: Signal strength 15-24 (signal strength is basically normal,
and equipment can be used under normal conditions)
Red: Signal strength 1-14 (Signal strength is weak, please check
antenna and the signal strength of current location)
Input voltage range
DC9-36V
Power consumption
Average current 630mA@12V and the maximum current 1.6A@12V
Serial Interface
Numbers
1 × RS485/RS232
Connector
Terminal block
Baud Rate(bps)
1200,2400,4800,9600,19200,38400,57600,115200,230400,460800(only 485)
Signal definition
RS232: TXD, RXD, GND RS485: A, B, GND
Data bits
7,8
Stop bits
1,2
Parity
NONE, ODD, EVEN
Physical
Characteristics
Casing material
Metal shell, ingress protection IP30
Dimensions
125.0*103.0*45.0mm (L*W*H, antenna pedestal, terminal block and DIN Rail are not
included)
Installation
Desktop, wall mounting and DIN-rail mounting
EMC
Static IEC61000-4-2, level 3
Pulsed Electric Field IEC61000-4-4, level 3
Surge IEC61000-4-5, level 3
Operating Temperature
-35℃~ +75℃
Storage Temperature
-40℃～+125℃(Non-condensing)
Relative Humidity 0
5%~95% (Non-condensing)
Others
Reload button
1 × Reload
TBD
Debug interface (TTL Level)
Ground protection
Screw
Built-in
Watchdog
Software
Network Protocols
PPP, PPPoE, TCP, UDP, DHCP, ICMP, NAT, HTTP, DNS, ARP, NTP, Telnet, SSH, DDNS, etc.
VPN
LT2P, PPTP
Security
Access Control, DMZ, Port Forwarding, SYN-Flood Protection, Filtering (IP& MAC & Domain)
Management
Web UI, PUSR cloud
Reliability
WAN Failover, Dual SIM Backup
Serial port
Transparent (TCP Client/Server, UDP), Modbus Gateway (Modbus RTU to Modbus TCP)
Certificate
In progress
CE, *FCC, *WEEE, RoHS, *RCM, *WPC

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WLAN
On: Enable WLAN
Off: Enable WLAN
GNSS
Used for GNSS version
NET
Green: 5G network
Orange: 4G network
Red: 3G network
1.4. Dimension
➢Sheet metal housing, DIN-Rail mounting and wall mounting supported.
➢125.0*103.0*45.0mm (L*W*H, accessories not included)
Figure 1. Dimension of USR-G816
2. Get Started
2.1. Login router
Power on the G816 router, connect PC to USR-G816 via LAN port or via Wi-Fi, users can login router via
Chrome or the other browser. The default network parameters are shown in the following table:
Table 3. Default network parameters
Parameter
Default value

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SSID
USR-G816-xxxx
LAN IP
192.168.1.1
Username
root
Password
root
Wi-Fi password
www.pusr.com
Open the browser, enter 192.168.1.1 in the URL blank, and press Enter, it will navigate to the following webpage.
After entering the login password, clicking login, the web page will show configuration page of USR-G816.
Figure 2. Login webpage
2.2. Brief introduction of the webpage
There are several tabs on the left side of the webpage, users can set parameters of USR-G816 on the tab
pages.
➢Status：Mainly display device name, firmware version, running status, and routes etc.
➢Service: Mainly some additional functions, including dynamic DNS, GPS (GPS version), PUSR cloud.
➢VPN: Configuration of VPN, such as PPTP, L2TP and OpenVPN.
➢Network: In this interface, there are many categories related to network connection. Users can set
parameters such as WAN port, LAN port and cellular network.
➢Firewall: User can set firewall rule on this page such as inbound and outbound rules, port forwarding,
blacklist, whitelist, and other information.
➢DTU: Configure parameters related to DTU such as serial port and SOCKET.
➢System: Mainly some basic functions, including restart, restore factory settings, firmware upgrade,

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log checking, etc.
Figure 3. Status webpage
3. Status & System
3.1. Status
Users can get the basic information of USR-G816, such as firmware version, running time, IPv4 WAN status,
routes list, and information about DHCP client.
3.2. System (Hostname)
In this page, users can modify the hostname, the default is USR-G816. After changing, click “Apply”, the
changed value will take effect.

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Figure 4. Hostname page
3.3. Administration password
This password is used when users login the built-in webpage.
The default login password is root. Users can modify it in this page for secure login.
Figure 5. Administration password

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3.4. Reboot timer (Timed restart function)
Users can realize the periodic restart of the router through parameter setting. It can be restarted on a daily,
weekly, or monthly basis. Timed restart can regularly clear the operation cache to improve the stability of the
router operation.
By default, this function is enabled and the router restarts every Sunday between 4 and 5 AM.
Figure 6. Timed restart function
3.5. NTP service
In the time parameter item, it can achieve the function of synchronizing the browser time and the time zone
can be set as needed.
In Time Synchronization item, the router can be set to work at NTP client or NTP server. USR-G816 provides 4
configurable NTP server options on webpage.

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Figure 7. NTP Settings
3.6. HTTP port
The port of logging in the webpage, default is 80, users can modify it in this page.
Figure 8. HTTP port

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3.7. System log
➢Local log
Users can view the log information and download the log information in this page.
Kernel log level: Debug, Info, Notice, Warning, Error, Critical, Alert and Emergency.
Application log level: Debug, Info, Notice, Warning, Error, Critical, Alert and Emergency.
Figure 9. Local system log
➢Remote log
The remote service IP is 0.0.0.0, it means the remote log function is disabled. Users can change the
remote service IP and port.
Remote log is based on UDP protocol. The following picture shows how to receive the remote log.

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Figure 10. Remote system log
3.8. Backup/Upgrade
Download backup: Click "Generate archive" to download a tar archive of the current configuration files.
Restore backup: Click “Browse” to select the backup archive file (Downloaded backup file), and then upload
the backup file.
Reset to defaults: Click this button, the USR-G816 will restore to factory default settings.

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Figure 11. Backup and firmware upgrade
3.9. Reboot
Figure 12. Reboot Function

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4. Network introduction
4.1. WAN interface
On WAN interface page, there are 2 options: WAN_5G and WAN_WIRED. The detail of these 2 options will be
introduced in later chapter.
Figure 13. WAN interface
4.1.1. WAN_5G interface
This is the same with cellular network. Please check chapter 4.3.
4.1.2. WAN_WIRED interface
➢DHCP Client Mode (Default)
The IP address of USR-G816 is assigned by the upper-level router, and the upper-level router must
enable the DHCP service. G816 is connected to the WAN port of the upper-level router through the
LAN port.

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Figure 14. DHCP Client of WAN interface
➢Static address Mode
In this mode, uses can set the IP address of USR-G816.
Figure 15. Static IP of WAN interface
Table 4. Detail parameters of WAN interface

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Items
Description
IPv4 address
Should be on the same network segment as the LAN IP of the upper-level router.
IPv4 netmask
Users can choose the options provided by the web page or manually enter the
subnet mask by themselves.
IPv4 gateway
Fill in the gateway address according to the actual network situation.
IPv4 broadcast
The broadcast address is calculated from the IP address and subnet mask.
Use custom DNS servers
User-defined.
➢PPPoE Mode
Fill in the correct username and password given by the operator.

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Figure 16. PPPoE Mode
4.2. LAN interface
Click the “Edit” button, the settings of the LAN port will be displayed. Users can set general settings like the
IP address, gateway etc. The DHCP service of the LAN port is enabled by default, and USR-G816 will automatically
assign an IP address to the device connected to the LAN port.
Figure 17. LAN interface