I have a UC560 with 7942/62 phones.  Internal and external incoming calls will randomly yet often go busy.  This install has been up and working for several months and this issue started this afternoon...  Thoughts?

I have a UC560 that has an auto attendant setup to receive incoming calls to a main number.  I have an after hours AA that is hit on holidays and weekends automatically.  That works fine.  The customer had a fire alarm the other day and had to leave ...

Steve D.  I posted this several weeks ago and had issues getting back into the community but now have my login back.  I am re-posting because I still have the issue.  I do NOT have a log for when the phone is booting with the sidecar.  I will try to ...