For information about Vivox Access Tokens, see the Access Token Developer Guide appropriate to your Vivox SDK version as linked below. In each case you will find various useful sub-topics to review using the navigation panel on the left side of the page, including sample token generation code, and example tokens, both encoded and decoded.
Vivox Unity 16.x SDK Guide
The Access Token Developer Guide for all Vivox Unity 16.x SDK versions can be found here: https://docs.unity.com/ugs/en-us/manual/vivox-unity/manual/access-token-guide/access-token-guide-toc.
Vivox Unity 15.x SDK Guide
The Access Token Developer Guide for all Vivox Unity 15.x SDK versions can be found here: https://docs.vivox.com/v5/general/unity/15_1_230000/en-us/Default.htm#access-token-guide/access-token-guide-toc.htm.
Vivox Unreal SDK Guide
The Access Token Developer Guide for the Vivox Unreal SDK can be found here: https://docs.vivox.com/v5/general/unreal/5_23_0/en-us/Default.htm#access-token-guide/access-token-guide-toc.htm.
Vivox Core SDK Guide
The Access Token Developer Guide for the Vivox Core SDK can be found here: https://docs.vivox.com/v5/general/unreal/5_23_0/en-us/Default.htm#access-token-guide/access-token-guide-toc.htm.