subnet identifier

This is the part of the network address that is unique to the subnet. It can be determined by logically ANDing the Internet address with the subnet mask.

subnet mask

A 32-bit quantity that enables gateways and host computers to know which bits in the Internet address correspond to their subnet address and which correspond to their host addresses.

switch characters

Characters interpreted by the access server that cause the access server to switch between sessions or between local and service modes.

synchronous

Pertaining to a communication method in which each event occurs in relation to a timing signal.

TCP/IP

Transport Control Protocol/Internet Protocol. A suite of Internetworking communication protocols of which TCP and IP are the two most fundamental.

TCP port

This is a protocol port number used by TCP/IP. For access servers, this number is mapped to a physical access server port number.

TD/SMP

Terminal Device/Session Management Protocol. An asynchronous, coded syntax used by the access server and a terminal to manage independent multiple terminal sessions simultaneously over a single physical circuit. See session management.

Telnet

Internet. The Internet standard protocol for remote terminal connection service.

Telnet client

See client-server.

Telnet listener

A service that allows resources to be accessible to a TCP /IP network. The service is provided over Telnet, hence the service is commonly referred to as a Telnet listener. Typically, printers connect to access server ports associated with a listener. However, personal computers and host computers can also connect to such ports and through them access the TCP/IP network.

Telnet server

See client-server.

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