1. What is Miracast?

The Miracast protocol lets you use the screen-sharing functionality that’s already built into Windows and Android devices, eliminating the need to install the Airtame desktop app. Miracast also lets Windows users extend their desktop and use Airtame as an additional display. This is ideal for many presentation scenarios in which someone wants to view their presenter notes privately while sharing a different screen to Airtame. An additional benefit of Miracast is that as of firmware update 4.1.0, it supports Touchback functionality on interactive whiteboards.

Miracast is supported on Airtame 2 devices, but not on the first generation of Airtame devices.

2. How does Miracast work on your network?

The Miracast native streaming protocol can work in two different ways: Peer 2 Peer and Miracast over Infrastructure.

The Peer 2 Peer (P2P) setup works the same way as far as the presenter is concerned, but the key difference is that it relies on the Airtame device's own access point (AP) being enabled. The benefit of this is that screen sharing can take place independently of the network, as the connection is direct from a presenter’s PC to the Airtame’s own access point.

Miracast P2P is included in firmware version 3.9.0 and above.

3. Miracast P2P Requirements

  • At least one of Airtame's access points needs to be enabled in the device settings in order to facilitate a P2P setup.

  • The enabled access point needs to be password protected.

  • Ensure that bidirectional TCP traffic is allowed through the local port 7236 on Windows machines in order for streaming to be allowed.

4. Miracast P2P Considerations

  • If your PC has a secondary monitor attached, it might assign a low resolution to the Miracast device. You will just need to reconfigure your Windows display once and it will remember it from there on.

  • When Miracast is enabled, the Airtame Access Point is renamed to DIRECT-{2-random-characters}-{Airtame name}-{band}. After every reboot or renaming, the Airtame Access Point will get the new name (if it is renamed) and random characters will be replaced by new ones.

5. The Miracast over Infrastructure setup

This is a great option for those who want to let presenters use the built-in screen sharing functionality of their Windows devices, but do not want to have active access points on Airtame devices. The connection goes over the local network (LAN). Initial discovery is still done in a P2P (Peer to Peer) mode, but no APs need to be enabled.

Miracast over Infrastructure is included in firmware version 4.1.0 and above.

Miracast over Infrastructure Requirements:

  • The Airtame device needs to be running firmware version 4.1.0 or higher.

  • Miracast needs to be enabled in Airtame Cloud.

  • The Airtame device needs to be connected to a secured WiFi or hooked up via Ethernet.

  • The supported operating system is Windows 10 (versions 1703 and above).

  • Discovery takes place in P2P mode even when utilizing Miracast over Infrastructure, so a presenter needs to be within proximity of the Airtame-equipped display to get started.

  • TCP port 7250 and 7236 needs to be enabled in both directions as it’s required for Miracast traffic.

  • Miracast over Infrastructure relies on mDNS for discovery, so UDP port 5353 should be enabled on the network in both directions. During discovery, the Airtame device also sends its IP address in WiFi beacon frames.

  • If the Airtame device and PC are in different VLANs/subnets, mDNS needs to be configured across VLANs. Learn more: Setup auto-discovery and multicast routing between VLANs.

Miracast over Infrastructure Considerations

  • Miracast over Infrastructure is a Microsoft extension that does not support Android or earlier versions of Windows. If presenters in your organization use these devices, there are alternative ways to support them. One option is to use Miracast P2P, and another is to use Miracast over Infrastructure for newer Windows devices and use Google Cast for Android devices. Like Miracast over Infrastructure, Google Cast does not need Airtame’s access points to be enabled.

If an environment supports both a P2P connection and a connection via Infrastructure, the Windows PC will decide which type of Miracast connection to use. Since this is a Windows native feature, Airtame cannot influence this process. Based on testing, Windows tends to default to the P2P connection.

6. How to enable Miracast on your Airtame device(s)

  1. Log on to your Airtame Cloud account.

  2. In the “Devices” tab, check that your Airtame devices are running the latest firmware version.

  3. Select a device and go to "Edit Settings"

  4. Toggle on the Miracast option.

  5. Click on “Apply changes

Present to Airtame with Miracast

1. How to present from a Windows device

  1. Make sure that the Airtame device is within physical proximity of (i.e. in the same room as) the PC/Laptop.

  2. Press (Win + P).

  3. Click "Connect to a wireless display".

  4. Click on either choose "Select screen" OR Press (Win + K).

  5. Click on the name of the Airtame-equipped display that you want to present to.

If you have enabled PIN code, then you will be prompted to enter a 4- or 8-digit PIN that you will see on the screen that your Airtame is connected to. This PIN code will be required every time the Airtame reboots but not when the scheduled Sleep Mode ends. 

By default, Miracast on Windows comes with multiple streaming modes which can affect performance and picture quality.

2. How to present from an Android device

The steps to mirror from your Android might vary depending on your device. The most common ways are either by using "Smart view", "Screen mirroring", "Quick Connect" or through the Cast settings on your phone.

If you have enabled PIN code, then you will be prompted to enter a 4 or 8-digit code that you will see on the screen. If you enter the correct PIN code, the mirroring should then start. This PIN code will be required every time the Airtame reboots but not when the scheduled Sleep Mode ends.

3. Present with a touchback

As of firmware update 4.1.0, Airtame supports Touchback with Miracast.

To learn how Touchback works, visit this article: Touchback with Miracast.

Do you have any questions?

You can write to us using the blue chat box in the lower right corner or send an email to [email protected] and we will be here to assist you.

If you are facing technical issues, remember to include Airtame device logs in your message.

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