This topic describes the Telnet solicitor screen and Telnet Unformatted System Services (USS) support. You can use the Telnet solicitor screen to obtain all information that is needed to establish a session. However, Telnet is often the primary method of connecting to the SNA mainframe environment; SNA users are accustomed to entering abbreviated logon commands, specifying their own logmode, and entering user data from SNA terminals. The USS table itself can be used to customize information such as logmode before it is sent to VTAM®. The logmode specified by the user or the USS table overrides the logmode specified by the TELNETDEVICE statement. For ease of migration, Telnet simulates SNA USS processing very closely. This simulation extends to being able to use the same assembled USS tables that are used by VTAM. VTAM-only character substitutions are ignored by Telnet and Telnet-only character substitutions are ignored by VTAM. Blanks are used in their place. To further extend the simulation of SNA terminals, Telnet also supports all of the INTERPRET table function.