7/11/2018, 8:18 AM - UPDATE: The reported "phone" problems in Skype appear to be resolved.
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7/10/2018 9:00 AM: EIS staff are investigating some telephone call routing issues that may cause some calls to fail to connect. There have also been reports since yesterday afternoon of Skype for Business Enterprise Voice call quality problems. Sometimes one participant is not able to hear the other, or the call will simply fail to connect.