how do you uninstall update 15.5.15502.6

  1. How do you uninstall Update 15.5.15502.6

    I've had few 3cx phone systems in place for nearly 2 years now with no issues until the 3cx system was updated to Ver 15.5.15502.6 and started to experience intermittent one way audio calla/ internal call issues with users experiencing engaged tones when answering calls. All the PBX systems...
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