might be a legacy phone load issue. What version of CUCM and what phones do you have.
In most cases, the time zone options that are marked with ‡ are compatible with
all phone loads.
The following phone models that run firmware 9.0(2) (or
higher) are fully compatible with all time zones that are listed in the
drop-down list box: 7906, 7941, 7942, 7945, 7961, 7962, 7965, 7970, 7971,
7975, 89xx and 99xx
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.