ip ssh port 2001 rotary 1 127
!
line 0/3/0
 rotary 1
 transport input ssh
 transport output ssh
 stopbits 1

SSH to the Terminal server IP address using port 2001. I setup port 2001 to be used on line 0/3/0. Notice the rotary 1 part of the line 0/3/0 which corresponds to the line above that defines using rotary lines 1 through 127.