Hi, allI wanted to tell you that I have a problem In one branch office several of our phones 79XX, like the 15% of them, stops working after a second try to make a call (off hook state). They sudenly stoped working, when you try to hang-off the phone...

Hi all.Good day. The directive department asked me to implement Presence on the Sharepoint sites of our intranet; they want to see whether a person is available, chat and start a voice over IP Call (like MS Lync).I already have a Presence Server 8.6,...