If you live in Washington Metro area, make sure you don't have ACI Solutions install your Allworx system. Half baked install.
For instance:
Little planning
few templates to build greeting scripts custom to your business
Training on next day after cutover. Not much preconfigured. 4 hours before anything is programmed. Meanwhile customers are floating around your phone system.
Installer didn't follow what I wanted to show on the handset Button list. Made up his own names.
Installer accidentally unplugged my firewall power cord. Down for an hour. Cost me IT service call to figure out.
NO remote phone support. I had to figure out how to allow traffic on my home router.
etc. etc.