This is one of those “smack on my forehead why didn’t I think of it before” tips that @tommyclark has been using in his emails for some time and @patrichard’s mention of it prompted me to right this little tip.
Want to make your Outlook signature phones and and Lync addresses clickable? Just prefix a phone number with TEL: and SIP URI/Lync Address with SIP: and it will become click to dial for phone numbers and click to IM for Lync Addresses!
This little trick works any where there is HTML content in Windows.
More Lync User QuickTips: http://windowspbx.blogspot.com/search/label/LyncUserTip