When you schedule a meet me conference, the system will send various types of notification to conference participants.

Email Notifications
It sends an email to all the invited parties for which it has a known email address set in the telephone system. The system also sends an updated email whenever a scheduled meeting is changed or canceled. Note that the one-X Portal conference scheduler does not know about and reflect user acceptance, rejection or deleting of conference invites in their own Outlook calendars. If Outlook users see a warning "Meeting cannot be found in Calendar" when they attempt to accept the meeting, see Accepting Email Meeting Notifications.  
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Telephone Notification
The system can call the conference participants when the conference starts. That includes you if you scheduled the conference. The call attempt lasts for 2 minutes. This option is enabled by selecting the Auto-Invite option in the conference settings.

Instant Messaging Notifications
Also, for those invited parties who are logged in to one-X Portal instant messaging, it will send an instant message. The system also sends an instant message whenever a scheduled meeting is changed or canceled and when the conference starts. You can choose not to receive these notification, see below.
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To switch conference notifications on/off:

1.Select the Configure tab and click on Notification.

2.Your scheduled conference notifications are controlled by the Enable Conference Scheduling Pop-up Notifications setting.

3.Change the setting as required and click Save.