> ## Documentation Index
> Fetch the complete documentation index at: https://help.cloudtalk.io/llms.txt
> Use this file to discover all available pages before exploring further.
# System & Network Requirements
> This post describes parameters and configuration requirements for networks, network devices, computers and VoIP phones.
To ensure a smooth experience with CloudTalk, we've provided a set of requirements device and network requirements here.
**User Level:** Admin
You can also find useful information on network requirements within the following video, and even more helpful tips on our [dedicated YouTube channel!](https://www.youtube.com/@cloudtalk7726)
Requirements
Device (dashboard application)
* Google [Chrome browser](https://support.google.com/chrome/a/answer/7100626?hl=en)
* Minimum 4 GB of RAM (8 GB recommended)
* Intel Core i5 / AMD Ryzen 5 processor
Our communications capability provider, WebRTC, is supported natively in most modern browsers. However, **CloudTalk only officially supports Google Chrome**. *(Safari, Edge, and Firefox will also work but not all features are fully supported).*
Supported Operating Systems
* Windows 10 and 11
* macOS 11 (Big Sur) or later
Older operating systems will no longer receive app updates, bug fixes, or new features.\
You can continue using your current version of the CloudTalk Desktop App, but:
* It will no longer be updated or patched.
* You may encounter bugs or performance issues due to outdated system components.
* A prompt to update will appear each time the app launches. CloudTalk Desktop does not auto-update; the installer must be run manually when prompted.
**Tip:** To ensure stability and security, we recommend upgrading to a supported operating system and downloading the latest version of the [CloudTalk Desktop App.](https://www.cloudtalk.io/download-app/) Legacy OS versions no longer receive security updates from Microsoft/Apple, which can create risks outside CloudTalk’s control.
Network
Bandwidth
You'll need to make sure that you have enough bandwidth to support the number of simultaneous calls you expect your agents to make. The bandwidth used is **up to 100 kbps per phone call**.
* Please note that this bandwidth only includes audio stream traffic for making and receiving calls.
* Other applications (such as email or CRM) need additional bandwidth, so more headroom is required.
**How much bandwidth?** It's not possible to determine the exact bandwidth you might need, but `1 Mbps per person` sharing the connection is a good start.
Routers
If your firewall blocks outbound connections by default, make sure to exclude any of our domains (`*.cloudtalk.io`) from inspection or policing on **ports 80** and **443.**
**Read [our QoS article](/en/articles/4384112-setting-quality-of-service-qos) to see our tables for configuring open network ports** in your router, firewall, and antivirus software.
Suggested routers:
* [Ubiquiti EdgeRouter X](https://www.ui.com/edgemax/edgerouter-x/)
* [Ubiquiti EdgeRouter](https://www.ui.com/edgemax/edgerouter/)
When possible, use a wired network connection. This will generally provide a more consistent and better quality network connection, which is vital for ensuring high call quality. We recommend using at least a **Cat 5e Ethernet cable (ideally a Cat 6)**.
If you are using a VPN, we advise you to either completely deactivate it or do not use it while using CloudTalk.
***
*Need help or have a question?* Just reach out through our [Support portal](https://support.cloudtalk.io/hc/en-us/requests/new?ticket_form_id=26305535257884) — we’re here for you.
## Related topics
- [Onboarding for New Users](/en/articles/8065091-onboarding-for-new-users.md)
- [Fix Call Quality](/en/articles/5884355-fix-call-quality.md)
- [Deploying CloudTalk Phone across a fleet](/en/articles/16801942-deploying-cloudtalk-phone-across-a-fleet.md)
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