Customer is not able to access to his CAD when he connects his IP Phone to Local network (changing adapter settings under Preference). It gives "Unknown error from CUCM, you may have entered incorrect id & pwd or extension number"
But when he connects his IP Phone on wireless network, he is able to connect his CAD.
I am trying to access with his credential on my system, when i am connected remotely thru VPN , then i am able to login with no such errors.
I have checked the settings on CUCM, could not find much what i can actually change.
Could you plz suggest me what changes am i suppose to make on CUCM /CAD.