can I have wlan phone 6100sys running ok without the ip manager 2245 ? 1

[kejun126]

I have some 6120/6140 wlan ip phones needed to be repaired, but I have not the WLAN IP telephoney manager 2245.
I read cs1000e 7.0 ntp and know that 6100sys handsets does not need 2245 when the WMM is enabled on 6100 series phones?

who have completed this?
is it really true that the wlan ip phones 6100 series can work ok without the manager 2245?

tell me if you konw, thanks very much!

 

[biv343]

You can lose the 2245 if your wireless network supports and is configured for WMM and you have firmware 21 or higher on the 61XX handsets.

 

[kejun126]

why I can not upgrade the handset firmware to 21 or higher version on my wlan ip handset 6140?