In the User Agent row, we see that Wendy is using an iPhone running iOS 10.3.3 and the Skype for Business mobile app version 6. Let’s check out the System tab to see what she was using. So now we’ve established the Wendy was not using a Skype for Business certified audio device. To be honest, I’m not sure why this is flagged as I could not find any information or suggested values for this element. DSP (digital signal processing) refers to the process of analyzing and manipulating an analog signal to a digital. Capture DSP Effects is a bitmask representing which audio capture DSP effects were used in the hardware. Glitches occur when the Skype for Business application was unable to have exclusive control of the microphone or device during the call, meaning another application was trying to use it.
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Microphone Glitch Rate is the average number of microphone glitches per five minutes, ideally there is less than one glitch per five minutes. We see that the Microphone Glitch Rate is 31.00 and Capture DSP Effects was a 7. First, let’s see what values are being flagged here. We’ll check Wendy’s System tab in a minute. Typically this means someone was using the built-in microphone on their laptop and not using a Skype for Business certified audio device. Wendy was using the default microphone (capture device) and default speaker (render device) during this call. Let’s check out the Connectivity tab and see what kind of network Gordon was using:
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Packet loss will cause the audio to be distorted or missing. The average packet loss of 12.87% with bursts up to a maximum of 30.06% is more than the 1% target for audio for Skype for Business Online. This size of latency will cause delays and fragmentation in the speaker’s audio. Average round-trip time, or latency, to Wendy was well beyond the threshold of 100 ms.
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Jitter had some issues but is below the 30 ms target. The outbound network, or the connection from Gordon out to the Wendy, is where we had the most issues. There is some packet loss but well below the 1% required for Skype for Business Online. However, this also shows the call was reaching a maximum of 100 ms of jitter during the call, which is well above threshold. Skype for Business Online can support less than 30 ms of jitter over any 15 second interval. The inbound network, or the network connection coming to Gordon, averaged 7 ms of jitter, which isn’t terrible. Several values are color-coded based on their severity, so we’ve got several issues here. Once a user is selected, a plethora of information is presented, such as their picture, directory location, and 7-day audio call quality: Users can be searched using their name or SIP address and chosen from the result menu list. Under the Call Analytics (Preview) menu on the left is User Search. The Call Analytics tool can be access via the Tools menu on the left in the Skype for Business admin center or directly using the URL.
No sound in skype after about 5 minutes how to#
In this article I will cover some key elements of Call Analytics and how to navigate the tool. Luckily in the Skype Online, this is all made easier using the Call Analytics tool (currently still in preview at the time of this writing). If not, you’ll need to gather client logs from the affected end user and search for the vqreportevent event to look for clues (hope you can sort through XML).
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In the on-premises world, if you’re lucky, the monitoring reports are available to look at the call or conference data. Investigating audio issues in Skype for Business is different in Office 365 versus the on-premises server product.