You can redirect all calls to a configured extension when the presence status is set as DND on your extension using Send All Calls (SAC) feature. Device Adapter does not support a DND presence status.
If you set your status as DND on the Avaya Aura® SIP endpoint and use sequential registration to register on a Device Adapter endpoint. The Device Adapter endpoint can activate or deactivate the Send All Calls (SAC) when the presence status is set as DND feature but the already set presence status (DND in this case) will not change on the Device Adapter endpoint.
If you are registered on a Device Adapter endpoint using sequential registration, then you cannot change your status from DND to active or available from the Device Adapter endpoint. You can change your presence status from the SIP endpoint only. Avaya recommends that you always change your presence status to available before registering to any other endpoint. For more information, see the Using Avaya 9608/9608G/9611G IP Deskphones SIP document.