| Item | Requirement | |------|--------------| | | Cisco MCS 78xx series, UCS C-Series (C200, C210, C220), or VMware virtual machine (ESXi 4.x/5.x recommended for 8.6.x) | | RAM | At least 4 GB (8 GB recommended for Unity Connection) | | Disk Space | Minimum 80 GB (120 GB+ for production) | | Network | Static IP address, hostname, DNS server, NTP server details ready | | Backup | A recent DRS backup (tar format) stored on a remote SFTP or SCP server | | License Files | .lic files for CUCM/Unity Connection (stored externally) | | Installation Media | The .iso file itself, verified SHA256 checksum from Cisco | | Boot Device | Virtual media (iDRAC, CIMC, vSphere datastore) or physical DVD/USB |
In essence, this ISO is a for Cisco Unified Communications applications version 8.6.2. It is most commonly used for: Bootable UCSInstall UCOS UNRST 8.6.2.10000-14.sgn.iso
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. Cisco ended software maintenance for CUCM 8.6 in 2015 and security/vulnerability support in 2017. Common Use Cases Fresh Installation: | Item | Requirement | |------|--------------| | |
Highly stable for its era; considered a "workhorse" version for legacy VoIP systems. Critical Concern. Cisco ended software maintenance for CUCM 8