RingCentral: Very Reliable

RingCentral has allowed us to trim our phone bill by over 60% compared to what we were paying before with plain old telephone service.  We've had only one issue with the service, but the one time we did have an issue, RingCentral's customer service was very quick to fix the problem and we had almost no downtime.  We have a huge amount of great features as well which is a definite upgrade over our old system.  RingCentral is great all around. Highly recommended.