The tpvm console command allows connection to the TPVM console from an SLX Telnet or console session, as in the following example.
[SLX]# tpvm console Connected to domain TPVM Escape character is ^\ Ubuntu 18.04.4 LTS TPVM ttyS0 TPVM login:
Once in the TPVM console, you can execute ctrl+\, or ctrl+Y+1/2/3 on the SLX-9450, to switch back to the session from where the TPVM console was started.