We have installed Cisco 2901 router as CME for one of our customers. This will be a dedicated CME serving near about 40-45 phones. There will be no integration with CUCM or any other UC devices. All phones are registered to CME. Attached license file for your knowledge where it says:
Yes, it is mandatory. You must have a CME / SRST license to be legally entitled to use the feature.
Some bundled packages of the ISR G2s include the CME/SRST license within it.
2901 UC Bundle w/ PVDM3-16,FL-CME-SRST-25, UC License PAK
You also need to purchae licenses for each handset you are attaching as well
e.g for a 7942.
Communications Manager Express License For One 7942G Phone
Again, these are mandaory for each phone you purchase in order for you to be "legal".
Note that this has ALWAYS been the case with CCME deployments, it's just that the G2 routers are now starting to "grumble" about the licenses that people always should have bought.
I do come across plenty of people (not my customers I hasten to add) who have not purchased the correct licenses. This can cause a number of issues including large bills if they ever want to migrate to CUCM, or failing licensing audits.
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.