If you’re interested in delivering softphones from XenDesktop under the hosted VM-based desktops (VDI) model of FlexCast, then further to my recent blog on this topic, there are some valuable Knowledge Base articles on our HDX RealTime technologies that I encourage you to review:

CTX124438 – Delivering Cisco IP Communicator from Citrix XenDesktop
CTX126634 – XenDesktop Support for Avaya Softphones
CTX124124 – Best Practices Delivering Microsoft Office Communicator on XenDesktop 4

XenDesktop 4 Feature Pack 1 introduces voice energy detection to reduce latency under congested network conditions by optionally discarding low-energy packets (silence or ambient noise).

If you’re using XenDesktop’s hosted shared desktops FlexCast model (that is, XenApp published desktops) or using on-demand application delivery from XenApp, there are also some valuable KB articles on the topic of softphone delivery:

CTX124654 – Best Practice: How to Configure XenApp 6 to Deliver Avaya IP Softphone R6
CTX124655 – Best Practice: How to Configure XenApp 6 for Microsoft Office Communicator 2007 R2

The recently released 12.0 Citrix online plug-in for Windows includes new echo cancellation technology specifically for softphones, enabling the use of a microphone and speakers as an alternative to a headset.

Derek Thorslund
Citrix Product Strategist, HDX