Table 234: Quality Parameters for Collaborative Services
Lync/Skype for Business
Collaborative Services
Quality Parameters
Lync/Skype for Business
Desktop-sharing
n UCC Score
n Quality band
n Delay (msec)
n Jitter (msec)
n Signal to Noise Ratio (SNR)
n Avg Tx Rate (Mbps)
n Tx Drop (%)
n Tx Retry (%)
n Avg Rx Rate (Mbps)
n Rx Retry (%)
NOTE: Delay and Jitter call quality parameters are measured end-to-end.
Lync/Skype for Business File-
transfer
n SNR
n Avg Tx Rate (Mbps)
n Tx Drop (%)
n Tx Retry (%)
n Avg Rx Rate (Mbps)
n Rx Retry (%)
NOTE: The quality parameters are computed by the AP and does not have any
dependency on the quality update message from the Microsoft Lync/Skype for
Business server.
Changes to Call Admission Control
In AOS-W 6.4.x,CAC is not applied for Lync/Skype for Business calls. Lync/Skype for Business calls are allowed
to flow with high priority irrespective of the call count or bandwidth based CAC limit. This applies to calls
prioritized by both media classification and SDN API based Lync/Skype for Business ALG. CAC configured
under wlan voip-cac-profile and Virtual AP (VAP) based bandwidth limitation under wlan traffic-
management-profile does not apply to Lync/Skype for Business calls.
Troubleshooting and Log Messages
When you report any UCC related issues, collect the STM, UCM, and tech-support logs.
To enable VoIP ALG related debug logs:
(host) (config) # logging level debugging user process stm subcat voice
To enable UCM related debug logs:
(host) (config) #logging level debugging user process ucm
(host) (config) #logging level debugging system process ucm
Collect the output of the following commands:
n show datapath session table
The RTP sessions are tagged with the Q flag indicating real time analysis is computed for the session.
n show datapath application
n show datapath user
n show rights
n show datapath acl <id>
n show datapath session
n show voice real-time-config
AOS-W 6.5.3.x | User Guide Voice and Video | 963
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