Address why the telephony-service command might not appear even after extracting the .tar file (usually a missing license or incorrect IOS image).
This "complete fileset" is a bundled package designed to simplify the installation of CME by providing all required components in a single archive. Haystack Networks - Phone Firmware Cme-complete-fileset-12.0.tar
: Requires a compatible Cisco IOS or IOS-XE image (such as the universalk9 image). Address why the telephony-service command might not appear