There seems to be an issue with Lync click to call tel: hyperlinks in certain circumstances. In my case click to call would open the Windows 8 app store Lync client rather than the desktop client. I checked the default programs assigned to Lync desktop and tel: was not there and could not be added. To fix this you need to repair the URL associations. The easiest way to do this is to run the following command at elevated command prompt (From the start menu type “cmd” then right click “run as administrator”):
reg add “HKLMSoftwareMicrosoftOffice15.0LyncCapabilitiesURLAssociations” /v TEL /d “callto”
Once you have done this open control panel and find “Default Programs” (Control Panel/All Control Panel Items/Default Programs):
Select “Associate a file type…” then find and select “TEL” and click “Change program…”:
You should now be able to chose “Lync (desktop)”:
You should now be able to open tel: hyperlinks directly in Lync.
Permit me to rant here for a moment…
I’m on a Mac.
No way to dial a pause/comma in a phone number? Doesn’t support, e.g. a protocol request for
tel:866-220-1011,109475555
FAIL.
Thanks.
Not possible in any client currently – its certainly a wanted feature by many – http://lync.ideascale.com/a/dtd/ability-to-save-a-contact-s-number-along-with-pauses-and-DTMF/372928-16285