The UCSInstall UCOS UNRST 8.6.2.10000-14.sgn.161 is a bootable image designed for specific installation or restoration purposes. The filename itself provides clues about its function:
This file is a digitally signed bootable installer for Cisco Unified Communications Operating System (UCOS) version 8.6.2. This particular build (suffix .161 ) represents a specific patch or engineering special (ES) release. The filename structure indicates it is a (meant for Cisco UCS servers), UNRST (likely an internal build code for Unity Connection or a specific CUCM variant), and carries a .sgn (signed) extension. Bootable UCSInstall UCOS UNRST 8.6.2.10000-14.sgn.161
Typically requires a minimum of 4GB to 8GB of RAM depending on the user count. The UCSInstall UCOS UNRST 8