Voxbi uses default music on hold on Cloud PBX published under the creative commons licence
https://creativecommons.org/licenses/by-nd/3.0/
https://www.jamendo.com/track/747913/sooslix-wind-song

“Tunguska Electronic Music Society” is the independent creative group of free artists who compose free music for free people. The creative lab of the community is based on Mutual Respect, Love, and Understanding. Every wishing person who shares the community’s principles, ideas and aims can become a part of “Tunguska Electronic Music Society”. The target of the community is the creation of the alternative musical, video, and cinema cultural layer, where the main motivator of the creation is the creation itself.

http://tunguska.org/ru/

In case the Customer uses the default music on hold, it is the Customer’s responsibility to credit the artist in accordance with the rules of the CC BY-ND 3.0 convention described on
https://creativecommons.org/licenses/by-nd/3.0/

​Customers can find a model of letter to inform the Copyright Collecting Society here.

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