I have AP's 1121 ( autonumous mode) with IOS (12.3.8JA2) but i saw in 7921 deployment guide that minimum IOS required is 12.3.8JEA2. or later
But i have seen in download area says that 12.3.8JEA3 is ( LD) so what IOS version should i upgrade to?
I want to try to upgrade AP's because sometimes in begin of incoming calls i have a delay of 3 seconds in audio (only happens with 7921 phones ). I have already tested with several firmwares of 7921 phones and problem remains.