---
title: "ESI Phone Solutions"
description: "Telesys Communications is your source for business phone systems, VoIP, LAN/WAN installation, IT support, managed services, & more! Offices in DALLAS, FORT WORTH, Texas, Florida."
url: "https://mail.dfwphones.com/phone-systems/esi"
date: "2026-06-05T20:26:54+00:00"
language: "en-GB"
---

## Why Are Businesses Nationwide Choosing ESI?

**Our Proven Experience:** Founded in 1987, we know a thing or two about keeping calls connected and conversations flowing. We also have the hardware to back it up, with numerous patents and industry awards.

**Powerful Tools & Leading Technology:** Enterprise-level features to promote employee productivity and efficiency, blended with a communications suite from voice to video.

**Simple & Intuitive:** Our solutions are designed and developed to be intuitive and user-friendly, making managing one or one hundred users easy and stress-free.

![Image](https://mail.dfwphones.com/images/2025/11/25/telesyss-esi-phone-ephone3__600x400.webp)

### ESI ePhone 3™ Enterprise IP Phone

Designed to boost productivity for enterprise users while remaining budget-friendly, this phone includes 45 LED programmable feature keys and additional functionalities. This adaptable desktop phone offers users flexibility, customization, and reliable technology.

- Color: Black
- Display: 3.5" Color LCD
- HD Voice Audio
- 8 SIP Lines
- 45 Programmable Keys
- 1,000 Local Phonebook Entries
- 600 Call History logs
- Gigabit Ethernet 10/100/1000, Dual-Port
- Hearing-Aid Compatible
- 2.4GHz Wi-Fi with optional adapter\*

![Image](https://mail.dfwphones.com/images/2025/11/25/telesyss-esi-phone-ephone4x__600x400.webp)

### ESI ePhone 4x™ Enterprise IP Phone

This high-end enterprise phone combines power and performance into an intuitive design that's a great addition to any desk space, with 45 LED programmable and Wi-Fi connectivity (with optional dongle). This work-horse phone offers any user a reliable, crystal-clear experience with ease.

- Color: Black
- Display: 4.3" Color LCD
- HD Voice Audio
- 20 SIP Lines
- 45 Programmable Keys
- 1,000 Local Phonebook Entries
- 1,000 Call History logs
- Gigabit Ethernet 10/100/1000, Dual-Port
- Hearing-Aid Compatible
- 2.4GHz Wi-Fi with optional adapter

![Image](https://mail.dfwphones.com/images/2025/11/25/telesyss-esi-phone-ephone8__600x400.webp)

### ESI ePhone 8™ Enterprise IP Phone

Modern looks and slick features on this high-end business phone is ideal for users needing fast access to critical data. A vibrant and versatile 7" touchscreen puts a wealth of info and apps a tap away, with up to 112 on-screen keys, built-in Bluetooth and Wi-Fi.

- Color: Black
- Display: 7" Color Touch-screen
- HD Voice Audio
- 20 SIP Lines
- 112 Programmable Keys
- 2,000 Local Phonebook Entries
- 1,000 Call History logs
- Gigabit Ethernet 10/100/1000, Dual-Port
- Hearing-Aid Compatible
- Built-in Wi-Fi support
- Built-in Bluetooth support

![Image](https://mail.dfwphones.com/images/2025/11/25/telesyss-esi-phone-ephonex1__600x400.webp)

### ESI ePhone X-1™ Enterprise IP Phone

This powerful workstation with a built-in sidecar supports up to 106 LED programmable feature keys. Perfect for power users that handle heavy call volumes and those that need visibility into activity on multiple extensions on the corporate network.

- Color: Dark Gray
- Display: 4.3" & 2x 3.5" Color LCDs
- HD Voice Audio
- 20 SIP Lines
- 106 Programmable Keys
- 2,000 Local Phonebook Entries
- 1,000 Call History logs
- Gigabit Ethernet 10/100/1000, Dual-Port
- Hearing-Aid Compatible
- 2.4GHz Wi-Fi with optional adapter\*
- Built-in Bluetooth support

### Additional Resources

Why ESI Cloud?: <https://www.esi-estech.com/cloud/ecloud-pbx> [
  ](https://www.esi-estech.com/cloud/ecloud-pbx)Why ESI On Premise?: <https://www.esi-estech.com/premises/esip-esaas> [
  ](https://www.esi-estech.com/cloud/ecloud-pbx)Which ESI System is right for me?: <https://www.esi-estech.com/solutions/which-system-is-right-for-me> [
  ](https://www.esi-estech.com/cloud/ecloud-pbx)ESI Customer Case Studies / Success Stories: <https://www.esi-estech.com/case-studies>[
  ](https://www.esi-estech.com/cloud/ecloud-pbx)ESI Product Brochures &amp; Videos: <https://www.esi-estech.com/library>

### Phone Systems

### Free IT Whitepaper

![Our 10 Benefits Whitepaper](https://mail.dfwphones.com/images/CTA-image.png)

This whitepaper will evaluate the differences between traditional technical support practices and **modern managed IT practices** and the **pros** and **cons** of both in regards to **small and medium-sized businesses**.

[Download Now! ](https://mail.dfwphones.com/10-benefits)[Need A Consultation?](https://mail.dfwphones.com/free-consultation)

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