The Attendant Backup Alerting feature notifies the backup telephones that the attendant needs assistance to handle calls. The system provides both audible and visual alerting to backup telephones when the calls in the attendant queue reach the administered warning levels. When the queue drops below the administered warning level, alerting stops.

Audible alerting also occurs when the attendant console is in Night Service, regardless of the size of the attendant queue.

Once the system alerts the backup telephones, designated users can answer an attendant call by: