Cisco IOS: Show incoming Telnet sessions

According to show ? the show sessions command is supposed to show Information about Telnet connections. Although I'm connected, the sessions does not show up. Both devices run Cisco IOS. How can I look up current Telnet sessions?

On the router running the Telnet server:

 Router2#debug telnet 
 Incoming Telnet debugging is on
 Router2#
 Router2#
 Oct 25 13:34:59.063: Telnet226: 1 1 251 1
 Oct 25 13:34:59.063: TCP226: Telnet sent WILL ECHO (1)
 Oct 25 13:34:59.063: Telnet226: 2 2 251 3
 Oct 25 13:34:59.063: TCP226: Telnet sent WILL SUPPRESS-GA (3)
 Oct 25 13:34:59.063: Telnet226: 80000 80000 253 24
 Oct 25 13:34:59.063: TCP226: Telnet sent DO TTY-TYPE (24)
 Oct 25 13:34:59.063: Telnet226: 10000000 10000000 253 31
 Oct 25 13:34:59.063: TCP226: Telnet sent DO WINDOW-SIZE (31)
 Oct 25 13:34:59.071: TCP226: Telnet received DO SUPPRESS-GA (3)
 Oct 25 13:34:59.075: TCP226: Telnet received WILL TTY-LOCATION (23) (refused)
 Oct 25 13:34:59.079: TCP226: Telnet sent DONT TTY-LOCATION (23)
 Oct 25 13:34:59.083: TCP226: Telnet received WILL TTY-SPEED (32) (refused)
 Oct 25 13:34:59.087: TCP226: Telnet sent DONT TTY-SPEED (32)
 Oct 25 13:34:59.091: TCP226: Telnet received WILL WINDOW-SIZE (31)
 Oct 25 13:34:59.091: TCP226: Telnet received WILL LOCAL-FLOW (33)
 Oct 25 13:34:59.095: TCP226: Telnet sent DO LOCAL-FLOW (33)
 Oct 25 13:34:59.099: Telnet226: Sent SB 33 0 
 Oct 25 13:34:59.099: TCP226: Telnet received DO ECHO (1)
 Oct 25 13:34:59.103: TCP226: Telnet received WONT TTY-TYPE (24)
 Oct 25 13:34:59.103: TCP226: Telnet sent DONT TTY-TYPE (24)
 Oct 25 13:34:59.103: Telnet226: recv SB NAWS 80 24
 Oct 25 13:34:59.107: TCP226: Telnet received WONT TTY-LOCATION (23)
 Oct 25 13:34:59.115: TCP226: Telnet received WONT TTY-SPEED (32)
 Router2#
 Router2#
 Router2#show sessions
 % No connections open
 Router2#

On the router connected to the Telnet server:

 Router2>show sessions
 % No connections open
 Router2>
 Router2>
 Router2>enable
 Password: 
 Router2#     
 Router2#show sessions
 % No connections open
 Router2#