I have been adding Cisco phones to my network without any problem.We bought 5 new 7841 phones from Cisco and someone from Cisco did the License part for me.There is no Licensing issue but when I am trying to add a Cisco 7841 I can see phone displays "Registration in progress" and in CUCM it shows Registration Rejected.
One time it showed Error Mismatch.
Any help will be much appreciated.
Solved! Go to Solution.
Thank you very much for your help.
Surprisingly today when I came to office I could see the phone was already registered.
I think I did not wait long enough when I deleted the ITL and Security settings.
Now it is registered and working fine.
Thanks you to everyone for your support and help.