To specify which trunk groups to monitor for the Trunk Group Hourly report, use the Trunk Group Measurement Selection screen. The Summary Report lists all administered trunks. You can administer a maximum of 75 trunk groups for the hourly report studied hourly on the G3r; on the G3csi and G3si, the maximum is 25. If you do not select which trunk groups to study, none appear on the hourly report.