# TCP/IP Communication

The Transmission Control Protocol/Internet Protocol (TCP/IP) is a set of communication protocols that interconnects network devices on the internet.

The TCP server can be accessed by Telnet clients. The output results and input command terminators allow the TCP server to interact with a Telnet client, and the server ignores the unsupported Telnet commands. This allows the TCP server to communicate with any standard Telnet client without any special configuration.

For the open network ports and services, see Open Network Ports and Enabled Ports and Services.