HDX RealTime Optimization Pack offers clear, crisp high-definition audio/video calls with Microsoft Skype for Business in an optimized architecture. Users can seamlessly participate in audio-video or audio-only calls to and from other:
- Skype for Business users
- Microsoft Lync users
- Standards-based video desktop and conference room multipoint control unit (MCU) systems
- Standalone IP phones compatible with Skype for Business
All audio/video processing is offloaded from the Server to the end-user device or terminal, optimizing the quality of the call with minimal impact on server scalability.
The Optimization Pack provides XenApp and XenDesktop customers the following key features:
When you deliver the Skype for Business client in a virtualized environment, there are a few feature differences. For more information, see https://support.citrix.com/article/CTX200279.
- If Skype for Business is running locally on your device, right-click the Skype for Business icon in the system tray and Exit the application. Interaction issues are likely when running Skype for Business locally while it is also running in the data center as a hosted application.
- Microsoft does not support the Lync and Skype for Business basic client with the Optimization Pack. Workaround: Use the full version of Skype for Business.
- The Optimization Pack does not support direct media connections to and from public switched telephone network (PSTN) gateways. There is an optional feature of Skype For Business, known as media bypass. For more information, see https://technet.microsoft.com/en-us/library/gg412740.aspx and https://support.citrix.com/article/CTX200279. If Skype For Business server administrators enable media bypass, PSTN calls involving Optimization Pack users automatically and transparently route media connections through the Mediation Server. This feature limitation doesn't cause user impact. Take this limitation in to account when planning network capacity.
- When the Skype for Business client is delivered as a published application rather than as part of a full Windows desktop, desktop sharing is not supported. If you use desktop sharing, the server desktop is shared rather that the local desktop. Application sharing can be used to share other hosted applications during a Skype for Business call. The virtualized Skype for Business client cannot share applications running locally on the user device.
- Client-side recording is not supported. Citrix recommends evaluating third-party server/network-based recording solutions.
- Gallery view is not supported in multiparty calls. Active speaker view is used in Skype for Business multiparty calls using the Optimization Pack.
- Panoramic webcams that deliver a 360-degree view of the meeting room are not supported.
- Optimized delivery (redirection of media processing to the user device) in a double-hop XenApp/XenDesktop-Receiver scenario is not supported.
- Web proxy limitations:
- HTTP proxy authentication is not supported. Configure proxies using white lists to allow unauthenticated access to target Skype For Business servers (for example, Office 365 servers for cloud-based deployments).
- Web Proxy Auto-Discovery Protocol (WPAD) and dynamic proxy detection are supported by using Windows endpoints only. Configure Linux and Mac endpoints using a static HTTP proxy address.
- On Linux terminals, the RealTime Media Engine installer disables multimedia redirection in Linux Receiver. Thus, avoiding the Optimization Pack and Linux/Unix Receiver getting into a conflict when accessing video devices. However, other unified communications applications cannot support Generic USB redirection when accessed on a Linux terminal that has RealTime Media Engine installed.
- The date and time strings on USB telephone devices that have display capabilities are not properly localized.
- The Plantronics Clarity P340 audio device is not supported.
- The Optimization Pack disables the use of hardware acceleration for the Logitech C920 camera on Windows. Support is provided for the C920 as a nonencoding camera. To enable hardware compression for the Logitech C920 on Windows, do the following:
1. Replace the Logitech driver with the stock Microsoft driver.
2. Create a registry setting that enables hardware acceleration with the C920.
On 32-bit and 64-bit Windows:
Data: 1 (enables the hardware acceleration)
0 or missing (disables hardware acceleration)
Note: Logitech does not recommend the C920 for business use cases. We recommend the more modern Logitech cameras (C930E, C925E), which are compatible with standard Microsoft drivers.
The Citrix CEIP usage and analytics program is a voluntary data collection program designed to improve your product experience. After installing this version of the Optimization Pack, you can participate in the programs anonymously.
You can change your participation in the program at any time. For more information, see https://www.citrix.com/community/cx/ceip.html.
CEIP is voluntary. When you opt-in, the CEIP services running in Citrix products gather anonymous configuration and usage data from your deployment, and automatically sends the data to Citrix. CEIP collects these classes of data:
- Configuration data
- All system and account identifiers are anonymized before being uploaded.
How your privacy is protected:
- Citrix does not collect any personally identifiable data.
- Random identifier is created at install time, which tracks data transfers over time.
- Citrix does not record information such as IP addresses, server names, or domain names.
- All data is sent using HTTPS directly to Citrix servers - no third-party data hosting services.
- All data is secured on Citrix servers and is accessible only by authorized individuals.
CEIP Opt-out policies and the user interface (UI)
The RealTime Connector defines the following registry entries controlling CEIP metrics:
If absent or set to 0, the user controls the CEIP metrics collection. If present and set to nonzero, metrics collection is disabled and the opt-out UI is hidden.
On 64-bit Windows, the RealTime Connector checks both HKEY_LOCAL_MACHINE\Software\Citrix and HKEY_LOCAL_MACHINE\Software\Wow6432Node\Citrix for this value.
If absent or set to 0, the user did not opt out of CEIP metrics collection. If present and set to nonzero, the user opted out of CEIP metrics collection.
In the Settings dialog screen, the RealTime Connector adds a check box.
 Send anonymous usage metrics to Citrix
The check box is hidden if the administrator disables CEIP metrics collection by setting DisableCEIPMetrics. Otherwise, it appears. The check box is checked if the OptOutOfCEIPMetrics registry value is absent or set to zero. The check box is clear if OptOutOfCEIPMetrics is present and set to nonzero. When the user changes the state of the check box, the RealTime Connector updates the registry setting and enables or disables CEIP metrics submission accordingly.