General TN3270E Telnet server information

The Telnet protocol provides a standardized interface, through which a program on one host (the Telnet client) can access the resources of another host (the TN3270E Telnet server) as though the client were a local terminal connected to the server host.

Telnet protocol is based on the concept of a Network Virtual Terminal (NVT) and the principle of negotiated options.

An NVT is an imaginary device, providing the necessary basic structures for a standard terminal. Each host client represents an imaginary device with certain terminal characteristics that the host server can support.

The principle of negotiated options is used by the Telnet protocol because many clients and hosts require additional services beyond the base services. Various options can be negotiated. Server and client use a set of conventions to establish operational characteristics for their Telnet connection by means of the DO, DON'T, WILL, WON'T mechanism that is discussed in Telnet commands and options.

Component event tracing is done under the SYSTCPIP component. A subset of trace options and a subset of IPCS commands are available to Telnet. See TCP/IP services traces and IPCS support and IPCS subcommands for TCP/IP for details.