Volume parameter value is inverted when a UCMA 3.0 Runtime-based application sends tones in a Lync Server 2010 environment

Article ID: 2861301 - View products that this article applies to.
Expand all | Collapse all


Assume that you develop a Microsoft Unified Communications Managed (UCMA) API 3.0 Runtime-based application that is integrated with a Lync Server 2010 environment. The application sends tones by using the ToneController.Send method (tone, volume). In this situation, the volume parameter value is unexpectedly inverted to "100%-volume".

For example, if the volume parameter value is set to 70%, the ToneController API will invert the value to 30%.

Additionally, if the values of the tones for the volume are too low, PSTN gateway may reject the tones.


To resolve this issue, install the following cumulative update:
2847888 Description of the cumulative update for Lync Server 2010, Unified Communications Managed API 3.0 Runtime: July 2013

More information

For more information about the ToneController.Send method, go to the following Microsoft website:
General information about the ToneController.Send method


Article ID: 2861301 - Last Review: July 15, 2013 - Revision: 1.0
Applies to
  • Microsoft Unified Communications Managed API v3.0 Core Runtime
  • Microsoft Lync Server 2010 Standard Edition
  • Microsoft Lync Server 2010 Enterprise Edition
kbqfe kbfix kbsurveynew kbexpertisebeginner KB2861301

Give Feedback


Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from smallbusiness.support.microsoft.com