Good evening, I have an interesting issue with our UX500's and myself and our local telephone supplies cannot figure out. We have two systems that are connected via a site-to-site VPN. Once upon a time, we had an office that daily users in it, and we could dial 700 or press the VM button to access the voicemail. However, I went on site today and I was working on setting up a user in that office and set up an In-Skin Voicemail and when I pressed on it I noticed I was getting a fast busy signal. So I tried to dial 700 and again, I get a fast busy signal. Can anyone give me some insight on what settings to check that could cause this issue?

- From the main office I can dial 700 and press the VM key and it works.
- I can dial the main office extensions and talk to them
- The main office can call my remote extension and it works

Any help would be great. Right now I'm thinking I clear the system and start reconfiguring the system. Rebooting the systems didn't change anything.