I have little problem with 9971+KEM. 9971 with no attached KEM works fine - 3 Line's + 3 BLF. If I connect KEM to phone (configure Phone button template, add KEM in CUCM to phone, set Subscribe CSS) phone also works fine. If I only add 1 or 2 BLF to KEM, phone starts re-registering to: secondary CUCM, then to SRST Gateway, then to Primmary CUCM, then to ... etc. and all BLF's on phone and KEM change to SD buttons icon. Firmware is 220.127.116.11. CUCM version is 8.6.2. I use power cube 4 (48Watts).
Thanks for any help.
Phone + KEM and configured only with Speed Dial buttons also works fine.
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.