Network-based telephony using VoIP — that’s voice over Internet Protocol (IP) — is where the future of telephony lies. But, before ESI got into the VoIP ballgame a few years ago, VoIP telephony often meant settling for fewer phone features than on a traditional system. ESI changed all that forever with its IP Series systems. Now, ESI proudly offers the latest generation: IP E-Class. The “E” stands for enhanced, because — true to ESI’s history — we improved what already were superior business telephone systems.  

The IP E-Class systems — the IP 200e and IP 40e — are advanced, network-based business phone systems that, like their predecessors, combine the best of both the telephony and data worlds:

• The rock-solid performance and all of the telephony features (now including optional Esi-Mail™ unified messaging) of ESI’s acclaimed IVX^® systems;
• The state-of-the-art delivery of packetized voice via the existing local area network/wide area network (LAN/WAN) to the desktop.

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* Requires Caller ID service from your telephone service provider.

Introduction

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Why VoIP?

Esi-Link

Remote IP Feature Phone

Comparison
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