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When Two-way audio is on, system will transmit local microphone’s voice to remote camera.
Start Two way Audio.
Stop Two way Audio.
Two-way Audio function depends on camera’s capability. This button is only enabled when the
focused camera is with two-way audio capability.
If the channel’s two way audio was enabled by remote service , system will reject enable this
channel’s two way audio job until remote’s two way audio job stop.