"NO DEVICE ERROR" when starting AX2012 / AX2009 Client

Hi All,
We often see that  the infolog pops-up with an error message:
'No Device'

This error message is displayed when opening the AX client with the Configuration Key "Telephony Integration" enabled.

This error message is caused by the ActiveX component for the phone integration on form smmPhone which returns an error for each phone device which is offline.

The solution to this error is disabling the Telephony Integration which we generally never use.
Steps are as follows :

1. Click System administration > Setup > Licensing > License configuration.
2. In the License configuration form, expand the Sales and marketing series node, and thenUNSelect/Unmark  the Telephony integration check box.
3. Click Apply.
4. Close AX Client and restart. !! No Infolog.