What versions of the OpenTok client SDKs can interoperate?

TokBox tests all major scenarios for functionality and interoperability on the current stable version and up to 2 minor versions prior. As an example, if the current stable version is 2.9.x, then we will test versions 2.9.x, 2.8.x, and 2.7.x.

While we don't limit users from using older versions, they do not go through our QA process and are therefore unsupported. We highly recommend moving to the newest version of the SDK quickly so that your users can benefit from the latest bug fixes and code improvements.

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