# Getting Started with Voice Channel

To use any Rocket.Chat products, you need to sign up for an [**Enterprise Edition free trial**](https://docs.rocket.chat/guides/enterprise-edition-trial) or have [Rocket.Chat community version deployed](https://github.com/Roxie-32/docs/blob/main/use-rocket.chat/rocket.chat-voice-channel/broken-reference/README.md). If you already have an account and our other solutions, please proceed.

{% hint style="info" %}
Requirements:

* [Asterisk](https://www.asterisk.org/) 16.19.0 or higher (We used [FreePBX](https://www.freepbx.org/) 16.0.10.40 with Asterisk 18.6.0)
* Valid SSL certificate (valid domain)
* You need Rocket.Chat version 5.0.0 or higher.
  {% endhint %}

Please note that:

* A **private branch exchange (PBX)** is a telephone system within an enterprise that switches calls between users on local lines while enabling all users to share a certain number of external phone lines.
* **Asterisk** is an open-source software implementation of a **PBX**.
* **FreePBX** is a web-based open-source GUI (graphical user interface) that controls and manages Asterisk (PBX).

**To set up a voice channel, you have two paths:**

1. [**Configure without previously having a PBX server**](https://funke-olasupo.gitbook.io/user-guide/6.5/use-rocket.chat/rocket.chat-voice-channel/voice-channel-admin-guide/configure-without-previously-having-a-pbx-server)
2. [**Configure with an active PBX server**](https://funke-olasupo.gitbook.io/user-guide/6.5/use-rocket.chat/rocket.chat-voice-channel/voice-channel-admin-guide/configure-with-an-active-pbx-server)

**Further Information:**

* [**Technical Specification**](https://funke-olasupo.gitbook.io/user-guide/6.5/use-rocket.chat/rocket.chat-voice-channel/voice-channel-technical-specification)
* [**Admin Guides**](https://funke-olasupo.gitbook.io/user-guide/6.5/use-rocket.chat/rocket.chat-voice-channel/voice-channel-admin-guide)
* [**Agent Guides**](https://funke-olasupo.gitbook.io/user-guide/6.5/use-rocket.chat/rocket.chat-voice-channel/voice-channel-agent-guides)
