Currently running CME 7.1 with 7945 and 65 phones on firmware 8.4.2S with some 7916 running B016-1-0-3. I am having an intermittent issue where on incoming calls, on a shared line, operator has no Hold, or Park softkeys displayed. First thing I would like to do is to upgrade the phone firmware. In version 8, 8.5.4 seems to be the latest, and in version 9, 9.0.3 seems to be the latest. The question is what version would be the best/safest/most solid version to upgrade to if I am running CME 7.1? I have already checked the CME Matrix and it shows version 8.4.2S as compatible with cme 7.1. The other thing that bugs me is that when you read a release note for phone Firmware it never mentions what versions of the CME it is supported on, only Call Manager version.
Thanks in advance,