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HowTo: Citrix Workspace App for Linux HDX Audio Optimization
https://www.ferroquesystems.com/resource/howto-citrix-workspace-app-for-linux-hdx-audio-optimization/#:~:text=Audio%20over%20UDP%20is%20an%20advancement%20over%20TCP,UDP-based%2C%20is%20a%20reliable%20protocol%20for%20this%20medium.
Audio Over UDP Supportability - support.citrix.com
https://support.citrix.com/article/CTX330991
The Audio Over UDP supports all connections which are configured to use Audio Over UDP Real-Time Transport is currently supported by the following features: Workspace App Current Release For Windows; Workspace App 1912 LTSR For Windows; Workspace App For Linux (Not With Netscaler Gateway)
Audio features | Citrix Virtual Apps and Desktops 7 2112
https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/multimedia/audio.html
We recommend delivering audio using User Datagram Protocol (UDP) rather than TCP when real-time audio applications are required. Only Windows Virtual Delivery Agent (VDA) supports audio over UDP. UDP audio encryption using DTLS is available only between Citrix Gateway and Citrix Workspace app.
Audio features | XenApp and XenDesktop 7.15 LTSR
https://docs.citrix.com/en-us/xenapp-and-xendesktop/7-15-ltsr/multimedia/audio.html
By default, Audio over User Datagram Protocol (UDP) Real-time Transport is allowed (when selected at time of installation), opening up a UDP port on the server for connections that use Audio over UDP Real-time Transport. Citrix recommends configuring UDP/RTP for audio, to ensure the best possible user experience in the event of network …
How to Get UDP Audio in Citrix VAD Working
https://www.mycugc.org/blogs/ray-davis1/2020/03/10/how-to-get-udp-audio-in-citrix-vad-working
The Audio UDP port range specifies the range of port numbers that the Virtual Delivery Agent (VDA) uses to exchange audio packet data with the user device. By default, the range is 16500 – 16509; Base Citrix Layout. I took this from the EDT CTX Article. Some people think that these ports need external as well.
Audio over UDP Real-time Transport - XenApp 7.x - Discussions
https://discussions.citrix.com/topic/390462-audio-over-udp-real-time-transport/
Although it is best to deliver audio using User Datagram Protocol (UDP) rather than TCP, UDP audio encryption using DTLS is available only between NetScaler Gateway and Citrix Receiver. Therefore, sometimes it might be preferable to use TCP transport. TCP supports end-to-end TLS encryption from the VDA to Citrix Receiver.
Audio features | Citrix Virtual Apps and Desktops service
https://docs.citrix.com/en-us/citrix-virtual-apps-desktops-service/multimedia/audio.html
Only Windows Virtual Delivery Agent (VDA) supports audio over UDP. UDP audio encryption using DTLS is available only between Citrix Gateway and Citrix Workspace app. Therefore, sometimes it might be preferable to use TCP transport. TCP supports end-to-end TLS encryption from the VDA to Citrix Workspace app. Audio quality
Citrix Audio over UDP and DTLS : Citrix
https://www.reddit.com/r/Citrix/comments/91re1v/citrix_audio_over_udp_and_dtls/
On the Netscaler Gateway we enabled DTLS to encrypt the UDP Audio traffic. On our firewall the ports based on the Citrix documentations are opened (Client/Citrix Receiver > NetScaler Gateway – UDP/443 / Netscaler Gateway > XenDesktop VDA – UDP/16500-16509). No special policies are set on the Citrix delivery controller. Sounds good so far, right?
How to Enable and Manage Client Audio ... - Citrix.com
https://support.citrix.com/article/CTX121613
Open the Delivery Services Console, Group Policy Management Console, or the Citrix AppCenter Console. Create a User Policy > Audio Section > Audio Quality. Set the Policy to Low, Medium, or High. Apply the filters you want the policy to be applied to. If using a XenApp console make sure the policy is enabled and prioritized to the desired level.
How to Confirm HDX Enlightened Data Transport ... - …
https://support.citrix.com/article/CTX220730
Verify the ICA UDP services are enabled. Open a command prompt on a VDA launched from Citrix Receiver/Receiver for Web Run the command netstat –a –p UDP Confirm the VDA is listening on UDP ports 1494 and 2598 Confirm the virtual channels are running over EDT by using the CtxSession.exe command line utility available on the VDA.
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