AltiGen comm ACM 5.1 - Manual (Page 327)

Chapter 23: Managing and Using MeetMe Conference
AltiWare ACM 5.1 Administration Manual 313
Joining a Meeting
Users calling from an extension can join a meeting by dialing the MeetMe Conference
extension number. Users calling through a trunk must first dial the company number,
then the MeetMe Conference extension number.
Users are prompted to dial the meeting number. If the meeting has not yet been started,
the user hears an appropriate message and can try again later.
If a passcode is required, the user is prompted to enter the passcode.