WLC526 and two AP521 problem. Clients keep loose connectivity

[sunilpatelmw]

I have a UC520 in a building with several IP phones.  We installed a WLC526 and two AP521's for seamless roaming of cordless phones.  THe phones work great with no issues.  When I am running a ping test on a wireless laptop, i keep loosing packets.  It looses connectivity randomnly.  DHCP is given via Windows 2008R2 server.  Have a cisco 2948 switch also in the mix.  THe AP's are connected directly to teh front of the UC520.  Is there something in the configuration I am missing?  Why do phones work perfectly and not data?                    

[Amjad Abdullah]

You do a ping from a laptop to another laptops?

The WLC and the APs you have are really old. It will not be strange if you find the client you are using having problem with the APs/WLC that you have.

[sunilpatelmw]

Would you recommend ap541's instead and do away with the WLC and 521's