Configuring Media Parameters
Media parameters consists of voice and video parameters designed to improve traffic quality of the selected radio.
On the > Radio Configurations > Media Parameters page you can configure voice and video parameters.
Click 6 GHz Band, 5 GHz Band, or 2.4 GHz Band based on the radio for which you want to configure media parameters.
The Media pane allows to configure video parameters.
The Voice pane allows to adjust the voice quality for the radios. Call admission control (CAC) enables an access point to maintain controlled quality of service (QoS) when the wireless LAN is experiencing congestion
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In the General section, select the Unicast Video Redirect check box to enable converting the multicast frame to a unicast frame over the air.
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In the Multicast Direct Admission Control section, configure the following:
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Select the Media Stream Admission Control (ACM) check box to enable admission control for video.
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Enter the percentage of the maximum RF and media bandwidth to be allocated for media applications on the selected radio band. The percentage must be in the range of 5 to 85. The default value is 85%.
When the client reaches the specified value, the AP rejects new calls on this radio band.
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From the Client Minimum Phy Rate (kbps) drop-down list, select the minimum transmission data rate or the rate in kilobits per second at which the client can operate. If the transmission data rate is below the physical rate, either the video will not start or the client may be classified as a bad client. The bad client video can be demoted for better effort QoS or subject to denial service.
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Enter the percentage of maximum retries that are allowed. The percentage must be in the range of 0 to 100. The default value is 80%.
If the retry percent exceeds 80%, either the video will not start or the client might be classified as a bad client. The bad client video can be demoted for better effort QoS or subject to denial service.
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In the Media Stream - Multicast Direct Parameters section, configure the following:
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Select the Multicast Direct Enable check box to enable multicast direct on this radio.
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From the Max Streams per Radio drop-down list, select the maximum number of allowed multicast direct streams per radio. The range is from 0 to 20. The default value is set to No Limit.
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From the Max Streams per Client drop-down list, select the maximum number of streams allowed per client. The range is from 0 to 15. The default value is set to No Limit.
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Select the Best Effort QOS Admission check box to admit over subscribed clients with the default QOS settings.
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Click to save the configuration.
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In the Call Admission Control (CAC) section, configure the following:
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Select the Admission Control (ACM) check box to enable bandwidth-based CAC for this radio band.
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Select the check box to enable channel-based CAC.
Load-based CAC incorporates a measurement scheme that takes into account the bandwidth consumed by all traffic types (including that from clients), co-channel access point loads, and collocated channel interference, for voice applications. Load-based CAC also covers the additional bandwidth consumption resulting from PHY and channel impairment.
Clear the check box to enable radio-based CAC.
Radio-based CAC enables the client to specify how much bandwidth or shared medium time is required to accept a new call and in turn enables the access point to determine whether it is capable of accommodating this particular call. The access point rejects the call if necessary in order to maintain the maximum allowed number of calls with acceptable quality.
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Enter the percentage of the maximum bandwidth allocated to clients for video applications on this radio band. The percentage must be in the range of 5 to 85.
Note: The sum of maximum bandwidth percentage of voice and video should not exceed 85%.
When the client reaches the value specified, the access point rejects new requests on this radio band.
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Enter the percentage of the maximum RF bandwidth that is reserved for roaming clients for video. The percentage must be in the range of 0 to 25.
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Select the Expedited Bandwidth check box to enable expedited bandwidth. The device attempts to facilitate the urgency of the call without potentially altering the quality of other TSPEC calls that are in progress.
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In the SIP CAC and Bandwidth section, configure the following:
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Select the check box to enable SIP CAC support.
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From the drop-down list, choose one of the following codec.
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G.711: This is the default
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G.729
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Custom: From the SIP Bandwidth (kbps) drop-down list, select the bandwidth in kilo bits per second.
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From the SIP Voice Sample Interval (ms) drop-down list, select the sample interval at which the SIP codec must operate.
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In the Traffic Stream Metrics section, configure the following:
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Select the Metrics Collection check box to collect traffic stream metrics.
Traffic stream metrics can be used to monitor voice-related metrics on the client-access point air interface. It reports both packet latency and packet loss. You can isolate poor voice quality issues by studying these reports.
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Enter the stream size. The range is from 84000 to 92100. The default is 84000.
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Enter the maximum number of streams. The range is from 1 to 5.
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Select the Inactivity Timeout check box to set the system to timeout in case of inactivity.
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Click to save the configuration.
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