
Loaded with advanced capabilities yet amazingly easy to use, ESI’s patented IVX C-Class (IVX stands for Integrated Voice Exchange) All-In-One Digital Phone System gives your small business the power to present your most professional side to your customers. IVX C-Class combines multiple first-rate, feature-rich systems into one tightly integrated unit:
- Business phone system
- Voice messaging choices:
- Entry-level model
(for businesses that don’t need voice mail) - Full-featured voice mail
(includes auto attendant)
- Entry-level model
- Verbal User Guide™ (friendly spoken help)
- Messages-on-hold
- Enhanced Caller ID*
IVX C-Class accepts two different models of ESI Digital Feature Phones. (Shown above: 24-Key Digital Feature Phone.) Each is a compact, attractive addition to any desk and will simplify your business communications. Its display is large and easy to read; and the dedicated function keys (so you don’t have to memorize codes) give you more ease of use.
The IVX C-Class All-In-One Digital Phone System is an easy choice over other phone systems in its class. Its ease of use and feature-richness reduces staff frustrations, increases productivity and enhances your business’s image. And IVX’s unique integration provides efficiency and cost savings previously impossible.



