Cisco WAN :: C1941 - Getting Time Out For VTy Login In Telnet

1)   KA-AGR-DEP-C1941#telnet 74.125.236.133 /source-interface gigabitEthernet 0/1
% telnet connections not permitted from this terminal
 
How can we enable telnet for the above for testing
 
2) KA-AGR-DEP-C1941#sh caller
                                                  Active    Idle
  Line           User               Service       Time      Time
vty 132        agri               VTY           00:02:24  00:00:00
 
Here we are getting the time of our vty login and not the serial link uptime. How can we enable to check the serial link uptime.
 
3)  CGHSULSOR#traceroute google.com
Translating "google.com"...domain server (164.100.3.1) [OK]
 
Type escape sequence to abort.
Tracing the route to google.com (74.125.236.129)
 
  1 10.161.20.69 4 msec 4 msec 4 msec
  2 10.255.232.38 4 msec 4 msec 4 msec
  3 10.255.238.237 40 msec 40 msec 40 msec
  4 10.255.221.225 40 msec 40 msec 40 msec
  5  *  *
 
CGHSULSOR#telnet 74.125.236.129 80
Trying 74.125.236.129, 80 ...
% Connection refused by remote host
 
In the above case it's showing refused by remote host. If the port 80 is opened in firewall also if we get this error what will be the issue. As i understood when firewall port is opened we wil get as OPEN