Receiving a Declined and Service Unavailable

I recently turned on my server FreePBX server running on CENTOS after about a year of being turned off (long story) I hooked up two 1120e phone that were preconfigured and working previously. One extension 101 calling 102, I’m getting a DECLINED from extension 102 to 101 I’m getting a SERVICE UNAVAILABLE.
The phones and server are connected to the same switch and all on the same network with no passing through firewalls.

Any tips, debugging etc. would be appreciated.