Occasionally I see Lync headsets that decide to play dial tone in the users ear while in a call. The normal (somewhat annoying) scenario to have dial tone generated in the ear is when the dial button is pressed on the headset (which also brings the Lync client in to focus), but after the call is made it should be removed. When this doesn’t happen it is usually down to the headset, however I have not found a consistent pattern of steps to resolve it. It appears to be something to do with how the headset has paired with the base station. Try the following:
- Remove power from base station and unplug USB
- Power off the headset
- Plug the power back then connect the USB back to the PC
- Power on the headset and re-pair
I have seen the behavior in both Jabra and Plantronics headsets, so it may have something to do with the standard they work to for Lync qualification.
UPDATE: This can also be caused when multiple user accounts are logged in to Windows, both with Lync signed in. Some of the end user complaints of this of this scenario are:
- I’m getting other peoples calls
- There is dial tone in my ear when in a call
- There is no audio in an A/V Conference and it keeps disconnecting
Can the dial tone be turned off altogether?
The dial tone is actually generated by the Lync client, and can be turned off in Windows Sounds by following these steps.
What about other annoying tonnes?
If any of the other tones get on your nerves you can disable them in the same way. One of my favorites is the second incoming call alert. If you wear a headset you will likely hear both the Lync alert and the device alert.