USR-G780 is a 4G DTU, which support FDD-LTE, TD-LTE 4G high speed access, support WCDMA, TD-SCDMA and GSM as well. The 4G DTU can realize data bidirectional transparent transmission from Serial to LTE Network.
List of LTE networks: https://en.wikipedia.org/wiki/List_of_LTE_networks
- HTTPD Client
- SMS transparent transmission
- AT command
- Baud rate synchronization
- Registration mechanism
- Heartbeat package mechanism
- FTP protocol upgrade
- RNDIS Function
- Webpage configuration
- AT command configuration
Working Mode Introduction
- Network transparent transmission mode
In this mode, User’s device can send data to specified server by LTE network. G780 support 4 socket links. Four links are mutual independence.
- HTTPD Client Mode
In this mode, User’ device can send/obtain data to/from HTTP server directly. The data will sent to Web server (apache, IIS, tomcat etc) in Http (GET/POST) mode as long as sending data in formal format. User can utilize the scripting language like PHP, ASP as database storage.
- SMS transparent transmission mode
In this mode, user’s device can send SMS to specified phone number, or send the SMS from phone to device.
- AT command
Whatever G780 working in any mode, user can send specified command to G780 to switch to AT command mode.