Consider the following scenario:
- You call a Public Switched Telephone Network (PSTN) number by using Microsoft Office Communicator 2007 R2.
- The PSTN number belongs to a European country.
- An RTAudio narrowband codec is used between the Mediation server and the Office Communicator 2007 R2 client when the ringback tone is played.
This issue occurs because the RTAudio narrowband decoder cannot process the ringback tones that certain European gateways use.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to"
Article ID: 2489823 - Last Review: Feb 14, 2017 - Revision: 1
Microsoft Office Communicator 2007 R2