User`s guide

About ESI

ESI (Estech Systems, Inc.) is a privately held corporation based in Plano, Texas, near the internationally

known “Telecom Corridor.” Founded in 1987, ESI designs and builds innovative telecommunications

products for businesses like yours. Because of their powerful combination of value and features,

ESI products are consistently recognized by industry publications and leaders.

Visit ESI on the Web at www.esi-estech.com.

IVX is a registered trademark of ESI. Certain ESI products are protected by various U.S. Patents, granted and pending. Product information contained

herein is subject to change without notice. ESI is an ISO 9001-certified company.