No, meet-me conference is only active until it's started by someone pressing the meet-me softkey and dialing the DN, no way to change that.
Roadmap questions cannot be addressed at CSC, reach your account team for that.
EDIT: CUCM is a call agent, not a conferencing solution. It provides conferences as a feature.
HTH
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www.cisco.com/go/pdihelpdesk
HTH
java
if this helps, please rate