I've been asked to upgrade the IOS Image on our 2921 Router. We currently have IOS version 15.2(3)T1 and a CME version 9.0 running using SIP and Skynny protocols.
I have to upgrade it to CME version 10.0 which I understand is embedded in IOS version 15.3(3)M, right?
So I was hoping if you can shed some light on this procedure since it's my first time executing this task. Do I need to upgrade the phones firmware as well? I have been looking around the internet but still I'm not quite sure how to go about it.
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.