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
63
This function is similar to RFC2217, when we send the specific protocol data from the network side, can
change the serial parameters in real time. Parameters take effect immediately, but it will be restored to the
original after restarting.
Protocol description:
The protocol length is 8 bytes in HEX:
Item
Header
Baud rate
Bit
Parity
Bytes
3
3
1
1
Description
3 bytes reduce
misjudgment
A baud rate
value, high first
Please check below
table
Parity of the first
four digits,
ignoring carry.