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Jan 01, 2026
Zultys vs Tierzero
Compare Zultys vs Tierzero. Find out whether Zultys or Tierzero is better for your VoIP business or home needs. The experts at VoipReview have analyzed the strengths and weaknesses of Zultys and Tierzero and detailed analysis of the comparison can be found below.
User Ratings & Reviews
- 5 Reviews
- 5 Reviews
Overview:
Zultys has been voted one of the top VoIP service providers in the business. Offering up high quality products and services at low prices, Zultys has proven to be a great competitor in the industry.
Tierzero is a Los Angeles-based provider that offers no-hassle business VoIP service through hosted PBX and SIP trunking solutions. The company also provides high-speed business internet services in a number of formats. They have loyally served...
Provider Info
- Website: zultys.com
- Headquarters Country:
- Founder Year: 2001
- Website: tierzero.com
- Headquarters Country: United States
- Founder Year: 1990
Plans Available*
- N/A
- N/A
Users Average Rating
Recent User Reviews
My BIGGEST complaint is the complete lack of user reference material. Zultys has a small 4 page "Quick Reference" guide that basically gets you making phone calls and not much more. Our previous phone system had an excellent user guide that detailed every feature of that phone system. The only training we got was what we found on YouTube! I will say the audio quality is excellent. Navigation is buried and confusing. Again, wouldn't it be nice to have a detailed user guide! Another negative is their handsets. While they are sleek and pretty, they are slim, hard to hold and fragile. I purchased phone pads to compensate for this as my guys were complaining they were impossible to hold with their cheek and shoulders while talking on the phone and working on the PC. I suppose a work around for this would be headsets for everybody. This system is also prone to just dropping calls. Our fax machine still drops calls before the system transfers to hold before the fax machine picks up. Nobody seems to know how to fix this either. Needless to say we miss our old system.
Our company specialized in smaller "key system" units until we were approached by two 100+ user clients to provide system, installation and support services. After researching available VOIP PBX vendors solutions, Zultys was an easy choice. After several years and multiple deployments, Zultys remains the right choice. Zultys is amazingly open to dealer feedback and development in helping us to meet and exceed customer's expecations. Bill Rakowitz General Manager Ganado Telephone Company
Don't be fooled by the 5 star reviews, TierZero is about getting you locked into a 3 year contract. They will charge you the full amount for 2 years no matter what happens and then 50% of the third year. If you need reliable internet, look elsewhere. After a year of subpar and slow internet, I finally just gave up and paid for 2 years of service I will not use to go with someone else. They were completely unwilling to work with me on a settlement at cancellation. They even admitted their service could not compete with what others were offering me and still was unwilling to work with me at all. Simply put, this is the worse of the worse and avoid them at all costs.
We have been operating an online retail business for several years and have recently opened a physical retail store and a separate warehouse for wholesale order fulfillment as well. We really wanted to move into a VoIP system and connect all the locations. We tried several companies with minimal success until we were referred to Tierzero. The line sound quality is truly superior and much better than what we were getting from the other providers we tried. More importantly the hands on customer service we received was really outstanding. There were some initial problems that were quickly resolved and each time we called in for assistance, the level of professionalism and quick resolutions to our issues was something we had not experienced before. We are very pleased with Tierzero and would highly recommend them.
*Plan pricing displayed here has been sourced directly from the provider's website or via the provider's sales team. Pricing is subject to change without notice. Check provider's website for most current pricing.Plan pricing may differ based on the country for which you are requesting service.
