Does not work correctly.
For example, if l4d2_voiceviewer_limit", "30", l4d2_voiceviewer_reset", "30" is set, then the microphone turn off after 15 seconds and turn on after 15 seconds.
When the player microphone is blocked (l4d2_voiceviewer_reset", "30") and the player turn on the microphone, a message about this appears in the chat (Player1 is talking) and if turned off, there is also a message about this (Player1 stopped talking) when his microphone is blocked.