launch the "maint. web interface"
click on "configure server" (under "Server Configuation")
click on "continue", and "continue", and "continue" yet again...(ignore all of the warnings etc you see)
click on "configure individual services"
click on "configure time server"
highlight "use these network time server"
fill in at least one, I use 192.43.244.18 (time.nist.gov)
you can use the DNS name, if you have DNS entries that work, otherwise use the actual IP address
click on "change", that's it.
to test, in the main web interface, click on "Network Time Sync" under "Diagnostics"
You didn't say what version of CM you have, but for certain versions of CM4.0.4 and CM 5.1.2 you need the most recent service pack, for the NTP to be visible on the diagnostic screen
Mitch
AVAYA Certified Expert