We are experimenting some trouble after upgrade about 40 APs from autonomous IOS to a controller 4402.
Some areas seems to have their coverage decreased after that.
Most complainig come from users who has 7921 IP Phones and walk through the coverage wi-fi area talking on it.
For example, in some AP coverage area I could stay away from the AP 15 meter before LWAPP upgrade, now I must stay just 11 or 12 meters and this is impacting roaming.
TAC says controller works different from IOS autonomous and that is the reason why this happens.
So we are supposed to increase APs number to coverage the same area...
We have already tried versions 22.214.171.124, 126.96.36.199 and 6.0
I would like to hear any thoughts from someone who went through this before.
Is this really like that?