From Release 10.1, the Off-hook alerts (OHA) functionality allows phones to automatically make calls to a pre-specified directory number (OHADN) after a pre-specified time interval (OHATimeout), and after the Dial Tone timeout has passed, that is, when a user goes off-hook.
When a call is made to OHADN, an alarm is sent to the Avaya Aura® System Manager as part of the OHA functionality.
This functionality can assist patients in hospitals, where a patient can pick up the phone but cannot dial a number. Apart from hospital assistance, incidents occurred in the past where a telephone receiver was used as a weapon, but implementing this feature helps to track such incidents in time.