Consider the following scenario:
- You have multiple users who are enabled for the remote call control (RCC) and multiple users who are enabled for Enterprise Voice in a Microsoft Lync Server 2013 environment.
- All the Enterprise Voice-enabled users are configured to have the same main telephone number and different extensions.
- An RCC-enabled user tries to call an Enterprise Voice-enabled user.
This issue occurs because the extension number of an Enterprise Voice-enabled user is parsed incorrectly when an RCC-enabled user calls the Enterprise Voice-enabled user.