Controller Based WLANs

How to check Call Quality parameters for a specific Lync call?

Each call will have its associated Call Quality parameters. Understanding this is very important in identifying and fixing Voice or Video Quality issues.

 

Feature to check the call quality parameters through CLI and GUI for LYNC calls.

 

 

Environment :

 

Controller Running 6.4
Lync server running "Lync Diagnostics Listener"
WLAN client running Lync application

 

Network Topology :

 

rtaImage.jpg

Ensure that controller has been integrated with Lync server.

(Master-6.4-Lync) # show web-server

Web Server Configuration
------------------------
Parameter                                      Value
---------                                      -----
Cipher Suite Strength                          high
SSL/TLS Protocol Config                        sslv3 tlsv1
Switch Certificate                             default
Captive Portal Certificate                     default
IDP Certificate                                default
Management user's WebUI access method          username/password
User session timeout <30-3600> (seconds)       900
Maximum supported concurrent clients <25-320>  75
Enable WebUI access on HTTPS port (443)        false
Web Lync Listen Protocol/Port Config           http:15000

 

To check the Call Quality Parameters i.e Delay, Jitter, Packet Loss & DSCP, use the below command:

 

 

rtaImage (1).jpg

 

The same can also be verified through GUI. There are also filters available in GUI (say to check voice only).

MOS score and UCC score for clients can be used to troubleshoot voice quality issues.

 

rtaImage (2).jpg

For further details with sample for a specific call, CDR based report can be generated.

 

(Master-6.4-Lync) # show ucc call-info cdrs cid 27

CDRS-Basic:
-----------
CDR ID  UCC Call ID  Client IP     Client MAC         Client Name  ALG   Dir  Called to  Dur(sec)  Orig Time        Status  Reason  Call Type  UCC Score  Quality  Client Health  MOS
------  -----------  ---------     ----------         -----------  ---   ---  ---------  --------  ---------        ------  ------  ---------  ---------  -------  -------------  ---
27      7            10.17.164.65  d8:a2:5e:96:2a:43  abilash3     Lync  IC   abilash2   1789      Jul 28 09:35:10  ACTIVE  NA      Voice      74.51      Good     83             NA


CDRS-Detail:
------------
AP Name      Re-Assoc  Src Port  Dest Port  Codec    UCC Score  Quality  Delay(msec)  Jitter(msec)  Packet Loss(%)  DSCP  Orig DSCP  WMM-AC  Orig WMM-AC
-------      --------  --------  ---------  -----    ---------  -------  -----------  ------------  --------------  ----  ---------  ------  -----------
Ardmore-abi  NA        50032     50044      X-MSRTA  74.51      Good     1.16         0.16          0.00            56    0          7       0


Events:
-------
Timestamp  AP Name  BSSID  Category  Event
---------  -------  -----  --------  -----


Call Samples:
-------------
Timestamp        Client Health  UCC Score  Quality  Delay(msec)  Jitter(msec)  Packet Loss(%)  SNR  Avg Tx Rate(Mbps)  Tx Drop(%)  Tx Retry(%)  Avg Rx Rate(Mbps)  Rx Retry(%)  Event
---------        -------------  ---------  -------  -----------  ------------  --------------  ---  -----------------  ----------  -----------  -----------------  -----------  -----
Jul 28 10:04:05  83             74.51      Good     1.16         0.16          0.00            53   50.67              0.00        10.28        60.33              11.28        NA
Jul 28 10:03:05  81             74.51      Good     1.16         0.16          0.00            53   50.66              0.00        10.30        60.24              11.31        NA
Jul 28 10:02:05  82             74.51      Good     1.16         0.16          0.00            53   50.66              0.00        10.29        60.17              11.31        NA
Jul 28 10:01:05  86             74.51      Good     1.16         0.16          0.00            53   50.63              0.00        10.29        60.08              11.31        NA
Jul 28 10:00:05  79             74.51      Good     1.16         0.16          0.00            53   50.61              0.00        10.31        60.00              11.31        NA
Jul 28 09:59:05  80             74.51      Good     1.16         0.16          0.00            53   50.61              0.00        10.30        59.92              11.32        NA
Jul 28 09:58:04  82             74.51      Good     1.16         0.16          0.00            53   50.62              0.00        10.30        59.85              11.31        NA
Jul 28 09:57:04  83             74.51      Good     1.16         0.16          0.00            53   50.59              0.00        10.30        59.75              11.30        NA
Jul 28 09:56:04  84             74.51      Good     1.16         0.16          0.00            54   50.57              0.00        10.31        59.67              11.31        NA
Jul 28 09:55:04  82             74.51      Good     1.16         0.16          0.00            55   50.55              0.00        10.32        59.59              11.32        NA
Jul 28 09:54:04  81             74.51      Good     1.16         0.16          0.00            55   50.54              0.00        10.33        59.48              11.34        NA
Jul 28 09:53:04  84             74.51      Good     1.16         0.16          0.00            54   50.52              0.00        10.33        59.39              11.36        NA
Jul 28 09:52:04  81             74.51      Good     1.16         0.16          0.00            55   50.50              0.00        10.32        59.30              11.37        NA
Jul 28 09:51:04  87             74.51      Good     1.16         0.16          0.00            54   50.48              0.00        10.33        59.16              11.41        NA
Jul 28 09:50:03  85             74.51      Good     1.16         0.16          0.00            55   50.43              0.00        10.36        59.04              11.43        NA
Jul 28 09:49:03  86             74.51      Good     1.16         0.16          0.00            54   50.40              0.00        10.38        58.94              11.45        NA
Jul 28 09:48:03  88             74.51      Good     1.16         0.16          0.00            53   50.34              0.00        10.39        58.83              11.46        NA
Jul 28 09:47:03  83             74.51      Good     1.16         0.16          0.00            53   50.45              0.00        10.44        58.73              11.49        NA
Jul 28 09:46:03  84             74.51      Good     1.16         0.16          0.00            53   50.52              0.00        10.43        58.58              11.52        NA
Jul 28 09:45:03  85             74.51      Good     1.16         0.16          0.00            53   50.52              0.00        10.43        58.43              11.55        NA
Jul 28 09:44:03  85             74.51      Good     1.16         0.16          0.00            52   50.55              0.00        10.45        58.29              11.57        NA
Jul 28 09:43:03  86             74.51      Good     1.16         0.16          0.00            52   50.56              0.00        10.48        58.00              11.60        NA
Jul 28 09:42:03  88             74.51      Good     1.16         0.16          0.00            53   50.55              0.00        10.47        57.85              11.64        NA
Jul 28 09:41:02  88             74.51      Good     1.16         0.16          0.00            53   50.56              0.00        10.48        57.71              11.65        NA
Jul 28 09:40:02  80             74.51      Good     1.16         0.16          0.00            53   50.57              0.00        10.48        57.63              11.70        NA
Jul 28 09:39:02  80             74.51      Good     1.16         0.16          0.00            53   50.70              0.00        10.44        57.54              11.73        NA
Jul 28 09:38:02  80             74.51      Good     1.16         0.16          0.00            53   50.71              0.00        10.45        57.47              11.77        NA
Jul 28 09:37:02  79             74.51      Good     1.16         0.16          0.00            53   50.74              0.00        10.42        57.35              11.79        NA
Jul 28 09:36:02  88             70.30      Good     1.72         0.36          0.00            53   50.86              0.00        10.40        57.18              11.83        NA

(Master-6.4-Lync) #

 

 

 

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‎08-07-2014 07:29 AM
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