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Extending Conferences
Scheduled conferences have a scheduled start time and a scheduled end time. At a
configurable point before the scheduled end time, the Demand PIN Master negotiates with the
CRS to obtain an extension. This negotiation only takes place if the conference is not empty.
CRS accepts or rejects extension requests, based on several CRS rules, such as the number of
extensions parameter. By default, the number of extensions parameter is set to four.
If negotiation is successful, the conference is extended. No message is played to the conferees
at this point.
If negotiation is unsuccessful, the conference is not extended. A message is played to
conferees to inform them that the conference is about to close. A second warning message is
played immediately prior to the scheduled end time. The period between the messages and the
scheduled end time is configurable.
The parameters that store the timing configurations are called
TenMinuteWarningXMinutesBefore and OneMinuteWarningXMinutesBefore.
If a conference becomes empty at any point during an extension period, it is automatically
closed to efficiently manage resources.
The Demand PIN Master informs CRS of each conference closure so that the conferences can
be removed from the CRS front end.
Time Synchronization
The Demand PIN Master ensures that its system clock is synchronized with the CRS system
clock by regularly polling the CRS computer. Time synchronization between the Demand PIN
Master and the CMS ensures that conference start and end times are the same in both
systems.
CS7000 System Administrator Guide for Release 9.4
Extending Conferences
255
January 2006
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