We need to upgrade from 9.1.(1) to 9.1.(2). We do not have any upgrade license or smartnet. Can we do this upgrade without any licences or do we need license to upgrade?
Thus it seems your question have relationship to neither Small Business hardware nor software. This thread will be moved from Small Business Voice Systems to more appropriate place. Your chances to answer will increase a lot.
There is no license requirement for upgrading from CUCM 9.1.1 to 9.1.2, the existing licenses will take care of the upgrade. You will need new licenses if you upgrade from 9.x to a 10.x or 11.x version.