How to exit telnet in linux

In linux, how does one exit telnet? During O & M, an ip port is often used for telnet. If telnet is enabled, how does one exit? 1. telnet terminal 6463 press ENTER Trying 63.172.25.18... Connected to 63.172.25.18 (63.172.25.18). Escape character is '^]'. www.2cto.com 2, ctrl +] Press ENTER telnet> 3 ,? Press enter close current connectionlogout forcibly logout remote user and close the connectiondisplay display operating parametersmode try to enter line or character mode ('mode? 'For more) open connect to a sitequit exit telnetsend transmit special characters ('send? 'For more) set operating parameters ('set? 'For more) unset operating parameters ('unset? 'For more) status print status information www.2cto.com toggle operating parameters ('toggle? 'For more) slc change state of special charaters ('slc? 'For more) auth turn on (off) authentication ('auth? 'For more) encrypt turn on (off) encryption ('encrypt? 'For more) forward turn on (off) credential forwarding ('forward? 'For more) z suspend telnet! Invoke a subshellenviron change environment variables ('environ? 'For more )? Print help information 4, quit press ENTER Connection closed. Author kung fu pandatv