Connect using SSH to one server and then telnet to another using the terminal

Is this possible? I have a secure account I want to connect to, and then open up a connection from that account using standard telnet. Is there a way to do this using the terminal? It doesn't appear to let me use telnet from inside the terminal.

Thanks

Use PuTTY to do that.
https://www.chiark.greenend.org.uk/~sgtatham/putty/