I have phone designer application I install it on my PC but when I install it for anther user and give me error Unable to connected to server.
Is there any parameters needs to check on CUCM?
How many times can I install it?
You can install it as many times as you want. Ensure that either the cluster-wide parameter or the device-specific parameter is set to allow phone personalization. After that, if it works for you it will work in general; don't forget to enter the CCMCIP server address in the client.