ESI pivoted to its own cloud service, leaving legacy Communications Servers behind. fvoip is a stronger landing spot with published pricing and no contract.
ESI deserves an honest framing: the company still exists and now sells its own cloud phone service. But its legacy on-prem line, the ESI-50, ESI-100, and the Communications Server family that many small offices still run, belongs to the company's past. New investment goes to cloud, on-prem parts draw from finite inventory, and dealer expertise on the old systems fades as the channel sells the new ones. If you own a legacy ESI system, your real choice is not whether to move to the cloud, but whose cloud you move to, and on what terms.
That is where comparison matters. fvoip publishes every price: $21, $34, and $49 per user per month, with annual rates of $18, $28, and $41, no contract required, no setup fees, and no regulatory recovery surcharges. Every plan includes unlimited US and Canada calling, multi-level auto-attendant, business-hours routing, voicemail-to-email with AI transcripts, and apps for iOS, Android, Mac, and Windows. Migration is free: we rebuild the call flows your ESI runs today, port your numbers at no charge, local in 3 to 10 business days, and run in parallel through cutover so no call is ever dropped in the transition.
Since you are choosing a new provider either way, choose on the fundamentals. fvoip is operated by Beneffy Telecom, a US-based carrier, with US-based 24/7 support on every plan, including single-user accounts. Desk phones from Yealink, Poly, and Grandstream arrive auto-provisioned and rent from $8.99 per month, so replacing proprietary ESI handsets is inexpensive. Businesses leaving legacy trunk charges and maintenance behind typically cut phone spend 40 to 60 percent, and the 30-day money-back guarantee means you can evaluate the switch on live calls, not brochures. Loyalty to a brand is understandable; a fresh comparison usually pays.
| ESI | fvoip | |
|---|---|---|
| Vendor status | Active company, but legacy on-prem line is past its investment horizon | US carrier actively serving small and mid-sized business |
| Your migration | Required either way; ESI steers you to its cloud | Free migration to fvoip with parallel-run cutover |
| Pricing transparency | Cloud pricing typically quoted through dealers | All prices published, from $21/user/mo |
| Contract | Term agreements common in dealer quotes | No contract, cancel anytime |
| Legacy parts | Finite inventory for ESI-50/100 era systems | New Yealink, Poly, Grandstream hardware; rent from $8.99/mo |
| Voicemail | Legacy on-box voicemail on old systems | Voicemail-to-email with AI transcripts on every plan |
| Support | Dealer-mediated | Direct US-based 24/7 support |
| Apps | Available on ESI's cloud offering | iOS, Android, Mac, Windows on all plans |
| Guarantee | Varies by dealer agreement | 30-day money-back guarantee |
Competitor details reflect published information at the time of writing and may change — always confirm current terms with the vendor.
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