We migrated from another PBX that was discontinued, and 3CX beat all of the competition hands down when we were evaluating options. It's easy to manage, and is compatible with a wide array of phone makes and models. Configuration is so intuitive that we were able to download the trial, install it on VMware, and were able to place and receive calls in less than an hour. It's extremely stable, we haven't had a single issue resulting with a reboot of the PBX. We have a single instance of 3CX hosting communications for 4 office locations. A feature rich mobile app is available and it functions beautifully. Online documentation is great. Audio quality is great. We do not have issues with dropped calls. At the end of the day, I would implement 3CX if I had to do it again and I would recommend it to my peers. Review collected by and hosted on G2.com.

3CX doesn't offer all inclusive support contracts, and support is not included in their subscription based model. Instead you have to pay per incident, and they have a strict rule of only handling one issue per ticket. This can get costly especially during implementation. Don't ask for your ticket to be escalated, or you'll be scolded. We are very well versed on VoIP, and the only issues we've had to contact support about were the result of the way 3CX is designed. For instance, they will not play the standard ringback tone when a call is transferred. Instead they play hold music. Feature request? You must be a gold certified partner to submit a feature request. What about organizations that are large enough to implement and support a communications solution internally? All Polycom phone models are considered legacy by 3CX and as a result limited functionality is available. Their conference bridge requires a call to be scheduled producing a unique conference code. We needed the ability to assign static conference codes to individuals within our company so we can't use the conference feature. Anything more than a basic incoming call flow requires a Windows application which is still considered beta. On the previous system we had, we could use if/then/else logic to route calls directly within the management interface. Closing the office early? You have to pop open the call flow designer, open a project, make your edits, compile the project, and import it into the phone system. Review collected by and hosted on G2.com.