User's Manual
Table Of Contents
- USR-G809 User Manual
- 1.Introduction
- 1.1.Overview
- 1.2.Features
- 1.3.Specification
- 1.4.Interface
- 1.5.Indicator
- 1.6.Dimensions
- 2.General Function
- 2.1.Web Interface
- 2.2.Hostname
- 2.3.User Password Settings
- 2.4.Reboot Timer
- 2.6.Reboot
- 2.7.Reload Button
- 3.Interface
- 3.1.WAN Interface
- 3.2.LAN Interface
- 3.3.Cellular Network Interface
- 3.4.WLAN Interface
- 3.5.VLAN
- 3.6.DIDO
- 4.Network
- 4.1.Network Switch
- 4.2.DHCP
- 4.3.Hostnames
- 4.4.Static Routes
- 4.5.Diagnostics
- 5.VPN
- 5.1.PPTP Client
- 5.2.L2TP Client
- 5.3.IPSec
- 5.4.OpenVPN
- 5.5.GRE
- 6.Firewall
- 6.1.General Settings
- 6.2.NAT
- 6.3.Traffic Rules
- 6.4.Access Restriction
- 7.Serial Port
- 7.1.Connecting Hardware
- 7.2.Serial Port Settings
- 7.3.Operation Mode
- 7.4.General Function
- Protocol description:
- 8.USR Cloud
- 8.1.Cloud Monitor
- 8.2.Add device
- 8.3.Network Status
- 8.4.Parameter Configuration
- 8.5.Firmware Upgrade
- 8.6.Records of device
- 8.7.Alarm
- 8.8.Remote Configuration
- 9.Services
- 9.1.Syslog
- 9.2.NTP
- 9.3.Email
- 9.4.SMS
- 9.5.Alert
- 9.6.Alert Examples
- 9.7.Call Reboot
- 9.8.Geolocation
- 9.9.DDNS
- 10.AT Commands Settings
USR-G809 User Manual Technical Support:
h.usriot.com
Jinan USR IOT Technology Limited www.pusr.com
61
Item
Description
Default
Enable
ON/OFF
OFF
Type
Serial heartbeat packet/Network heartbeat packet
Network heartbeat
packet
User-defined packet
A-F, a-f, 0-9, hex data, even bit
0123456789
Heartbeat interval (s)
1-6000s
3
Note: Heartbeat packet is only valid in TCPC, UDPC mode.
7.4.3.Restarting Without Data
This function defaults to be disabled. When it is enabled, the device can actively disconnect the connection
with the server and reconnect when there is no data from network side within the reconnect detection interval,
which can prevent pseudo-connection due to an abnormal socket disconnection.
When the time reaches the restart detection interval, the device will restart automatically to recover the
connection.