We install both — ESI systems on-site and NUSO cloud voice — so we don't need to sell you one over the other. This page is the conversation we'd have across your conference table, minus the drive.
Neither is "better." One is usually right for how your offices actually work — here's how we think about it, consideration by consideration.
One building with everyone at a desk points on-prem. Several small sites, home offices, or a sales team on the road points cloud — or hybrid.
If desk-to-desk calling has to keep working no matter what, on-prem earns its keep. If "everyone grabs their cell and the app" is fine, cloud's failover is enough.
Buying a system you'll keep for years usually costs less over its life. A monthly per-seat fee costs less to start and flexes with headcount. Both are legitimate — it's a finance question as much as a phone question.
Whichever way you go, the same local engineers design it, install it, and answer the phone afterward.
ESI's on-premise IP phone system, sized and programmed for your offices, with ESI ePhones on the desks and the ePhoneGo app for people on the move. Hybrid-ready when you want cloud seats alongside it.
Carrier-grade hosted voice with desktop and mobile apps and built-in redundancy. Want to stay in the ESI family? ESI's eCloud PBX gives you a cloud system with the same ePhones and the eConsole portal.
Tell us how many desks, how many sites, and how your lines come in today — you'll get a straight recommendation, not a pitch.
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