Cisco Call Manager GUI

[cards4]

Hello,
I am currently using a Cisco 1760 router. I wish to access the Cisco Call Manager GUI that is built into the router. I followed the instructions on how to access the GUI, but when I try to access the GUI on the internet, it gives me a blank webpage. What is the best way to gain access to the Call Manager GUI interface on a Cisco 1760 router? Thank you!

 

[cards4]

The end result of what I wish to accomplish is to gain access to the JTAPI APIs of the Call Manager Express. Is there another solution to initiating phone calls other than Call Manager Express? Thanks!