Diagnosis and Corrective Action

How many other devices have similar quality issues?
Which device types are experiencing the issues, and what software version are they running?
In how many stores or regions do the issues occur?
Do the issues occur within a specific characteristic of WLAN RF environment, or independent of the environment?
Do the issues occur during a specific time of the day (rush hour)?  

The quality issues here occur in environmental conditions not specific to certain areas inside stores, to certain AP(s) or other RF variables, or to type of call (within the store or via cell phone outdoors).

For the device in sample

Store #149

, select timestamp

2 Apr to 15:47:02

(1).

The following screen depicts device performance at that specific time.

For the device in sample

Store #145

, select timestamp

14:50 to 14:50:23

(1).

The following screen depicts device performance at that specific time.

The analysis characteristics and metrics indicate a larger network problem not related to device roaming performance or WLAN AP functionality, but rather to the wired network distributed system, such as switches and routers. Investigation and isolation of such issues are typically less complex than the effort for wireless.

In this use case, the switch vendor quickly diagnosed and corrected the issue using vendor-proprietary debugging procedures and tools.