---
title: "Phone Solutions"
description: "At Telesys, we offer a variety of phone system options for businesses. ESI, Avaya, Samsung, & FreedomIQ are all available & can be easily implemented."
url: "https://www.telesysonline.com/phone-systems"
date: "2026-06-19T09:29:12+00:00"
language: "en-GB"
---

## Shop Leading Business Phone Systems: Zultys & ESI

Enhance your business productivity with our selection of top-tier IP phones and communication systems. We feature industry-leading solutions from Zultys and ESI, each designed to streamline operations and improve collaboration. Discover the exceptional user experience that comes with IP based Deskphones, the secure and reliable all-in-one platform from Zultys, and the powerful, scalable ESI systems—available as a robust Communications Server or the flexible, easy-to-administer eCloud PBX. Explore our complete range of phones and find the perfect fit for your business strategy today.

[![Zultys](https://www.telesysonline.com/images/2025/10/22/zip49g.png)](https://www.telesysonline.com/phone-systems/zultys)### [Zultys](https://www.telesysonline.com/phone-systems/zultys)

---

Zultys delivers an easy-to-use, secure, and reliable platform designed to streamline all forms of communications and increase productivity for any size business.

[Read More](https://www.telesysonline.com/phone-systems/zultys)

[![ESI Phone Systems](https://www.telesysonline.com/images/2025/10/28/esiphone-systems-new.png)](https://www.telesysonline.com/phone-systems/esi)### [ESI Phone Systems](https://www.telesysonline.com/phone-systems/esi)

---

The ESI Communications Server is a powerful tool around which you can build your organization’s entire telecommunications strategy — and you don’t have to know it all in advance.

[Read More](https://www.telesysonline.com/phone-systems/esi)

[![ESI Cloud PBX](https://www.telesysonline.com/images/2025/10/28/resi-cloud-pbx-new.png)](https://www.telesysonline.com/phone-systems/esi-cloud-pbx)### [ESI Cloud PBX](https://www.telesysonline.com/phone-systems/esi-cloud-pbx)

---

The ESI eCloud PBX features easy administration using the web-based Cloud dashboard, giving users real-time visibility into their business communications.

[Read More](https://www.telesysonline.com/phone-systems/esi-cloud-pbx)

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