Explanation of the IP address assignment using PPP.

The IP address for the PPP network interface is assigned using the following modes:

Static IP
The IP address is configured manually in the Net_Config_PPP.h file. However, it is possible to change the IP address at runtime. The static configuration specifies also a primary and optional secondary DNS server.
Automatic IP
This mode is mostly used. The IP address for the PPP client is obtained from the Dial-up server. The Dial-up server specifies also a primary and optional secondary DNS server. In order to use this mode, the option "Obtain Client IP address automatically" must be enabled in the system configuration. When this option is enabled the Local IP address configuration settings are ignored.

Note: All available functions for using PPP are explained in PPP Interface section of the Reference.