Using CDT and Microsoft Skype Simultaneously

Both CDT and Microsoft Skype (Lync) use the same Human Interface Device (HID) addresses to control the USB audio device. If both are running simultaneously, Microsoft Lync may impair CDT audio stream.

System can be configured to reserve USB audio device specially for CDT. This scenario is supported only with Jabra and Sennheiser devices listed on Compatibility List.

Reserving USB Audio Device for CDT

To reserve the audio device specifically for CDT, install terminal_HS_USBHS.msi headset driver. By default the reservation feature is turned on. If you wish to disable it registry needs to be modified.

For Jabra devices: (DWORD)

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\SAP\CCTRAXPXY\HID_USE_JABRA_SPECIAL_COMMANDS

For Sennheiser devices: (from SP10 and upwards)

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\SAP\CCTRAXPXY\HID_USE_SH_SPECIAL_COMMANDS