I am in the process of deploying Lync 2013 to our environment. Internally, client connections are fine. Externally, our Windows 7 laptops with Office 2013 can connect and the clients for Office for Mac 2011 can connect. The Lync 2013 client will not connect on any smartphone or tablet, be it ipad, windows phone 8, android etc.
Can anyone help me figure out what this could be?
The error that is reported is "Cant connect to the server. It may be busy or temporarily unavailable."