We currently have a high density deployment of 2802-series APs and users are complaining that they sometimes experience metallic voice during VoIP calls. This lookes to be due to they get roamed from one access point to another even if they are sitting at the desk and not moving. What are suggestions to prevent such cases or make them less noticeable by wifi clients.
First thing i will ask is have you got the Voice clients on 5GHz?
Have you ensured back-end QOS is setup and working.
Was a site survey conducted to ensure you were meeting the Cisco VoWIFI deployment requirements? https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-1/Enterprise-Mobility-8-1-Design-Guide/Enterprise_Mobility_8-1_Deployment_Guide/Chapter-9.html
What handsets are you using or is it a soft phone?
The decision to roam is a clients in the end, you can if supported enable roaming features to help make the decision better (802.11k, v and r).
Some clients have the ability to tune when the client roams, or driver updates to the wireless driver makes it better.
per SSID only 5Ghz is allowed
QoS is in place
thanks for documentation, I will check
skype for business softphone is used
802.11k, features enabled, 802.11r not, is 802.11r mostly designed for Apple devices?!
drivers per my understanding, are on the latest tested version (but not on the latest one available on Intel site)