ESI IVX C-Class Business Phone System

Enhance your communications with a superior small-business telephone system.

ESI builds big-system features into the small-business IVX C-Class. The patented IVX phone system design means all the vital business communications features are built-in — not added-on. Equipped to handle up to six phone lines, 12 digital stations and two analog stations for fax machines or cordless phones, IVX C-Class gives your business a competitive edge.


System highlights (maximum capacities shown)


C-ClassDigital stations – 12
Analog stations – 2
Central Office (CO) lines – 6
Voice mail ports – 2
Voice storage (hours) – 2
24 Key Phone – Yes
12 Key Phone – Yes

ESI C-Class Brochure Adobe PDF Brochure

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