ESI IVX S-Class Business Phone System

Enhance your communications with the all-in-one business telephone system.

ESI builds big-system features into the small-business IVX S-Class. The patented IVX phone system design means all vital business communications features are easily accessible. Equipped to grow to 16 phone lines, 32 digital stations, and eight analog stations, IVX S-Class gives your business a competitive edge.


System highlights (maximum capacities shown)


Total stations – 40
Digital Stations – 32

Analog stations – 8
Central Office (CO) lines – 16
Digital line cards (T1/PRI) – 1
Voice mail ports – 6
Voice storage (hours) – Up to 30
Conference ports – 4
ESI Presence Management – Optional
VIP applications – Optional

ESI S-Class Brochure Adobe PDF Brochure

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ESI offers additional ways to run your business more smoothly.

Any ESI system by itself is an outstanding addition to your business, but special options
like these will make it still more valuable to you.

  • ESI Presence Management combines RF scanning technology and ESI’s award-winning telephone systems to offer presence status, call control, entrance security, and  documented tracking of users’ work hours and attendance history. For complete time and attendance management, use it with ESI TimeLine PC software.
  • VIP (Visually Integrated Phone) works within Microsoft® Outlook® to help you manage your ESI voice mail and contacts from your PC. VIP Professional adds still more features, such as auto-recording§, text-messaging, and color-coded monitoring of station status.
  • VIP PC Attendant Console greatly simplifies managing any busy office’s call traffic. Everything your attendant needs to handle your callers efficiently is just a mouse-click away.
  • VIP ACD Supervisor provides a variety of tools for better managing the unique needs of an ACD department, including a view of real-time department performance and agent status, and built-in management reports as well as the ability to create custom reports. To enhance your employees’ teamwork, VIP ACD Agent provides one-click access to fellow agents’ status.