> 2.16.1 | Description

> • | Note, that the embedded TCP/IP stack is not available for all modules.

> • | The embedded TCP/IP stack allows the usage of the following Internet Services:

> - | Socket for TCP: Client and Server

> - | Socket for UDP: Client

> - | FTP: Client

> - | HTTP Client

> - | SMTP Client

> - | POP3 Client

> over a GPRS or CSD connection. There are some differences between different modules, which will be mentioned in the following examples.

> • | Very important aspect in the Siemens implementation is non-blocking interface concept, which will be

> • | mentioned in the Read/Write Data chapter.

> • | Several examples for the usage of Internet Services are provided in the following subsections.