CTS

In the time that we have had Fonality, it has been very reliable. There has been a few instances where it has been inaccessible, but support was quick to fix it. Dealing with support has been OK. I am not a fan of non-US based tech support. I think we need to create as many jobs as possible in the US. That being said, at least they are usually quick at resolving issues.
One persistent issue with our HUD not launching on a specific ISP had to be resolved by me. We had to use an alternate DNS server. Other than that, the HUD has been great for maintaining a view of our queues.
Outages are rare and audio quality has been good. The flexibility of using a desk phone, your cell, or a soft phone has been a plus. No onsite hardware to maintain our VOIP is another benefit.