USR-W630 User Manual
Technical Support:
Jinan USR IOT Technology Limited
www.usriot.com
21
Figure 18 class RFC2217
The changes made by this command take effect immediately without restarting. After restarting, the W630 restores
the original parameters.
4.8. Keep-alive Function
Keep-alive mechanism is added to TCP connection. When W630 network is abnormal, it can judge the network
abnormal and disconnect in time. When the network is restored, it can connect to the server in time.
4.9. USR-Link
When USR-W630 works in AP mode, it opens a UDP port with a port number of 4900 for receiving commands from
the Fast Networking Protocol. The mobile phone can be directly connected to the WIFI network of USR-W630, query
the list of SSID information and set the router SSID and password through the command of UDP protocol. After setting
up, USR-W630 will automatically restart and connect to the router, then work in STA mode.
