WM Systems M2M Router NB, Руководство пользователя

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For sake of the exact settings, we offer to read the related tunelling service description of the
OpenWrt
®
administration interface which you are currently using:
https://wiki.openwrt.org/doc/howto/vpn.openvpn#tab__traditional_tun_server1
Save the configured settings by the Save & Apply button.
4.9 Ser2Net (RS232, RS485) configuration
In case of ordering the RS232/RS485 expansion to the router, you can use the serial connection
which you have to configure first.
Open the Services menu, Ser2Net item. Here you can configure the RS485 settings.
There is a TCP Port as the connection port.
Note that the port which is defined here, will be automatically added to the firewall settings to
allow the communication. (Check Firewall settings later to ensure that it is enabled).