Known issues for UniCom

System administrators are aware of the following issues with Indiana University's UniCom service:


Modes affected


Polycom VVX500 series phone locks and signs out UniCom Enterprise Voice Some Polycom VVX500 series phone users may experience unexpected screen locking and signing out; UITS is working with the phone vendor to correct this problem.
Status does not update based on Exchange calendar appointments and meetings All When logged into Unicom via the mobile or Mac clients, the status will not change to busy when an appointment or meeting starts. The issue can be resolved for the Mac, but not mobile, by updating to the latest version. Windows clients are not affected.
Polycom VVX500 series phone doesn't allow simultaneous ring to be assigned via the phone UniCom Enterprise Voice Polycom VVX500 series phone doesn't allow simultaneous ring to be assigned via the phone; use the Skype for Business client instead. For instructions, see Configure team calling in UniCom Enterprise Voice.

Outgoing caller ID displays "IU Trustees"

UniCom Enterprise Voice

Outgoing off-campus calls display "IU Trustees" as the caller ID name. This issue has been submitted to the vendor for correction.

Response Group call transfer fails on mobile client

UniCom Enterprise Voice

The Response Group application is not supported on Lync mobile clients.

Lync Web App plug-in incompatible with Chrome

Web App plug-in

Google Chrome browser can no longer connect to a Lync meeting using the Lync Web App. Use Internet Explorer, Mozilla Firefox, or Safari.

On January 12, 2016, Microsoft ended support for Internet Explorer versions prior to version 11. UITS strongly recommends that you upgrade to a new operating system if your current system does not support Internet Explorer 11. If you experience difficulty with Internet Explorer, make sure compatibility mode is turned off.

Outgoing calls immediately disconnect in Lync for Mac 2011 v.14.0.5

UniCom Enterprise Voice

Outgoing calls immediately disconnect in Lync for Mac 2011 version 14.0.5. This problem is fixed in version 14.0.6 or later. UITS recommends upgrading to the latest version, available from IUware.

Out of Office message set in Outlook does not turn off in Lync at scheduled time


In some cases, if you set your Out of Office message to be turned off at a scheduled time, Lync will continue to display your Out of Office message even after the scheduled time has passed. If you manually re-activate the Out of Office message, then manually deactivate it, Lync will once again display correctly.

Outlook or Lync for Mac hangs


Some Mac users have reported Outlook or Lync becoming unresponsive or taking an excessively long time to complete an action; this happens most frequently on loading. UITS recommends applying the latest updates from Microsoft for both Office and Lync to address this problem.

Lync Mobile client shows "reading setting" instead of contact list


If you have a Video Bridge as a contact (that is,, your contact list will show this error in the Lync Mobile client. For the Lync Mobile client to show contacts correctly, you will need to remove this contact.

Trouble making and receiving calls when using Windows Switch User functionality


Lync clients will not work properly when multiple users are logged into the same computer. Users need to log out of the computer, as opposed to using Switch User, in order for Lync calls to work correctly.

Can't expand ADS groups added with Outlook Web App


Some features of Lync are available from within Outlook Web App. However, in this version, you cannot expand ADS groups in your contact list. To add an ADS group to your contact list and later expand it to see individual members, use the desktop client rather than OWA.

In Lync for Windows, incoming call/IM alerts do not appear on the screen.


If you have configured Windows for a custom text size (DPI) greater than 100%, the notifications of incoming calls or instant messaging invitations that ordinarily appear in the lower right-hand corner may not appear within the visible area of the screen, making it difficult to accept calls. You can correct the problem by returning the DPI setting to 100% using the Display Control Panel. Alternatively, if you hear an incoming call invitation, you can accept it by simultaneously pressing the Windows logo key and the letter a.

When dialing an international number from the Lync client, call ends abruptly after the caller enters an Authorization Code.

UniCom Enterprise Voice

When dialing an international number from the Lync client, if the international number is busy, the call will end after the caller has entered an Authorization Code. The caller will not hear a busy signal.

Lync showing incorrect name for person who answers a call


This issue occurs when using Lync to call a number shared by a group of people. Due to the method used by the software to locate the number in the directory, the conversation window for the active call may not display the name of the person who actually answered the call.

Voice mail not answered by intended recipient

UniCom Enterprise Voice

If you configure Lync to forward unanswered calls to a colleague, and a call to you then rolls over to your colleague's voice mail, callers may be surprised to reach your colleague's voice mail rather than yours. Other Lync users will see that the call is being forwarded, but callers using standard phones will be unaware of the forward. As a workaround, instead of forwarding your calls, choose to simultaneously ring your colleague's number; see Configure team calling in UniCom Enterprise Voice.

For an introduction to UniCom, including how-to PDFs and videos, see UniCom.

This is document baxu in the Knowledge Base.
Last modified on 2019-03-22 10:14:37.

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