The best conference room cameras should be practical, easy to operate, and deliver a sharp viewing experience. You don’t want to have to enlist the help of the IT department either every time the New York office needs to converse with the London one. This column was introduced in Microsoft Lync Server 2013.While it might be totally acceptable to huddle around your laptop to Skype your relatives in Australia,or converse with the kids when you’re away on a business trip via FaceTime, when it comes to business conference calling from the boardroom, not just any old webcam will do.
Accounts for any gain adjustments made to the received signal. Level in dBFS of the signal sent to the loudspeaker for playback. This column was introduced in Microsoft Lync Server 2013. The root mean square (RMS) of the incoming signal of up to the first 30 seconds of the call. For good quality, the acceptable range should be less than -50 dBoV.Īutomatic gain control (AGC) on the Mediation Server side. This applies only to the Mediation Server. Received signal level on the Mediation Server from the Gateway. For good quality, the acceptable range should be dBoV. Received signal level on the Mediation Server from the Gateway this applies only to the Mediation Server. High echo percentage in send streams an indication of echo leak.
Percentage of time when echo is detected in sent stream. For other devices, this metric should not be used to evaluate device quality. For devices that support on-board acoustic echo cancellation, high values indicate echo leak. Typically, values are low for headsets or handsets, and higher for speaker phones or stand-alone speakers. Percentage of time when echo was detected in the microphone capture stream. The data type for this column was changed in Microsoft Lync Server 2013.Ĭauses of an echo event: ECHO_EVENT_BAD_TIMESTAMP 0x01 ECHO_EVENT_POSTAEC_ECHO 0x02 ECHO_EVENT_ANLP 0x04 ECHO_EVENT_DNLP 0x08 ECHO_EVENT_MIC_CLIPPING 0x10 ECHO_EVENT_BAD_STATE 0x20 The cause can be a combination of those individual causes. ENTER_VS_FORCEORCONVERGENCE can only be enabled by regkey for test purpose. Causes of voice switch entry: ENTER_VS_BADTS 0x01 ENTER_VS_ECHO 0x02 ENTER_VS_FORCEORCONVERGENCE 0x04 ENTER_VS_DNLP 0x08 The cause can be a combination of those individual causes. Voice switch is a half-duplex mode with reduced interruption ability. Average microphone capture stream time stamp error, in milliseconds, in the last 20 seconds of the call.Īverage speaker render stream time stamp error, in milliseconds, in the last 20 seconds of the call. Speaker device clock drift rate, relative to CPU clock. Microphone device clock drift rate, relative to CPU clock. Not reported by A/V Conferencing Servers, Mediation Servers, or IP phones. For good quality this should be less than one per five minutes. Not reported by A/V Conferencing Servers, Mediation Servers, or IP phones.Īverage glitches per five minutes for the microphone capture.
For good quality, this should be less than one per five minutes. This metric is not reported by the A/V Conferencing Server or IP phones.Īverage glitches per five minutes for the loudspeaker rendering. This metric is not reported by the A/V Conferencing Server or IP phones.Įcho Return Loss Enhancement metric.
For acceptable quality, it should be less than 35 dBmo. Represents the Post-Analog Gain Control audio noise level. This metric is not reported by the A/V Conferencing Server or IP phones. For acceptable quality, it should be at least 30 dBmo. Represents the Post-Analog Gain Control audio signal level. Usually, each call has two records, one is for caller, and one is for callee. Each record represents audio signal metrics for one endpoint.
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