Symptoms
When this issue occurs, a toll and toll-free number are displayed as follows:
Join by phone: +<123456> +<654321> Note When you create a meeting in Microsoft Lync 2010, the toll and toll-free numbers will be displayed as follows: Toll-free number: +<123456> Toll number: +<654321>Resolution
To resolve this issue, install the March 10, 2015 update for Lync 2013.