D-Link DCS-3420 Product Manual - Page 43
Audio
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Section 3 - Configuration Audio Transmission There are five options to select. For all mode: the modes, only one client can talk to the server at the same time. Full-duplex: The User can talk to and listen from the server simnltaneously. Half-duplex: The User can talk to the server or listen from the server, but not at the same time. Simplex/Talk only: The User can only talk to the server. Simplex/Listen The User can only listen from the server. only: Disable: The audio is disabled in both directions. Improve audio If the Network Camera works in a low quality in low bandwidth network environment, the User bandwidth environment: can check this option to improve audio quality by sacrificing some real-time synchronization. Bit rate: There are three bit rates for audio. 32Kbps and 24Kbps are suitable for both music and speech and 8Kbps is suitable for speech only. D-Link DCS-3420 User Manual 43