Is using telnet server of Server A to connect to other ports at server B possible?
If this is possible, can anyone show me how to do syntax?
No, the Telnet protocol is very simple and does not have anything like SSH's "tcpip-forward"; it only supports a single interactive terminal.
(It might be possible to write a program to implement something similar on top of Telnet, but it would be much more trouble than it's worth, not to mention insecure. Use SSH instead.)