---
title: "About This Manual"
slug: "about-this-manual-21"
updated: 2023-08-11T07:44:25Z
published: 2023-08-11T07:44:25Z
canonical: "knowledge.akuvox.com/about-this-manual-21"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.akuvox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# About This Manual

![图片.png](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/%E5%9B%BE%E7%89%87-35KVFN6U.png)

Thank you for choosing Akuvox E20S door phone. This manual is for administrators who need to configure the door phone.

This manual applies to 120.1.1.25 and it provides an overview of all functions and features of E20S.