Telecom geeks from Macungie, Pennsylvania.

Their support team is responsive, patient, and always willing to assist. John Chisca, in particular, has been fantastic — proactive, knowledgeable, and consistently following up to ensure everything is running smoothly.

Incredibly user-friendly and makes communication seamless for our team. The system is reliable, with clear call quality and no issues with dropped calls. It's reassuring to know that we have a system we can count on, backed by a team that truly cares about customer satisfaction.

When an upgrade went wrong, John was incredibly responsive and helpful. Beyond fixing the initial issue, they also identified additional cost-saving opportunities in our setup, demonstrating their commitment to our success.

John has been 100% reliable from day one — always responsive, easy to reach, and just gets things done. You never have to follow up or wonder if something's in motion. Vox Tandem has truly been a trusted partner for Exalt Health, and we look forward to opening future rehab hospitals with the continued support of their team.

Our phone uptime has been amazing. I can always count on being able to make and receive calls 24x7. The Vox Tandem team and its support has been very knowledgeable and quick to respond. Our company is growing and I can count on Vox Tandem to steer us in the right direction for communication needs.

We use Vox Tandem both in-house and we resell the systems to our clients. Vox Tandem's hosted solutions have come through and saved our clients when power goes out or the internet goes down at their location. The features come all included and do not nickel and dime us. John and Nate know their system and the industry hands down and have always come through in a pinch.

We evaluated many vendors and Vox Tandem stood out above the rest. The system designed by John meets our needs and exceeds our expectations; all at a reasonable price that is lower than what we were paying for our old "traditional" phone system. Our system has been 100% reliable.

We use our Vox Tandem cloud phone system in-house and recommend it to our customers — it's that solid. No separate bills to track, no surprise charges, and everything works the way it should. Unlimited calling, no per-user fees, and no maintenance to worry about makes it an easy choice.

The support through Vox is very fast, often responding to a question within the hour or faster. Their instruction is clear and easy to understand, even when you are not an "IT" expert. No one has ever said "that is not my job."

Excellent service and support from initial sales through installation. They have responded quickly and efficiently to any requests and have provided excellent product for our extensive campus phone system. We're able to manage calls with the app even when we are not physically at the campus locations.

They were able to bring our system out of the past, and into the future at a favorable cost point. Zero downtime, a reliable mobile app, and intuitive interface that just flat out works. John is always one step ahead, easy to get a hold of, and stands by his product.

John was extremely patient during my million questions prior to our transition and very thorough to ensure the transition was as smooth as possible. Nathan and the support team were quick to respond with a small hiccup and resolved it very quickly.

The ability to have office calls roll to my mobile phone means I never miss a call. Being more responsive to my customers equates to more work. It is that simple. At the beginning of 2025, I emailed John with a request for more phones. I received them the following week.