Connect to the system with PCPro and in the ribbon where Communications, Programming.. is there is a Time setting icon where you can set Time and Date. WebPro is better, though.
There are too many Log In sessions active in WebPro. Some should Time Out in 15 minutes so wait a little bit and you should be able to log in. When you are able to log in, at the Home page, go to the Session Management icon and click on it. It will open a window where you can logout all sessions that aren't active any longer. As you probably know, if a WebPro session is active you can't access thesystem via PCPro.
The better way to remove the settings for IP phones is to unplug the defective phones then go to 90-23, in WebPro, (you won't see this in PCPro) and delete each of the phones you've unplugged. This removes the IP address and MAC address of the old phone. You do not lose any extension programming like button assignments and such. Much easier this way.
And I disagree with your method. I have installed hundreds of NEC IP phones and the ONLY way to install them, for me, is to program the extension number in the phone. I have NEVER had an issue in doing it this way. Makes replacement of the IP phone a piece of cake, simply unplug the bad phone, delete in 90-23 and plug in the programmed new phone. If you have taken over a lot of systems where my method was used to install IP phones, then I would say maybe we are on to something!
