You may choose to receive no calls at all or only those from particular callers on your exceptions list:

To switch Do Not Disturb on (with or without exceptions), dial *08. An N is displayed. To switch it off, dial *09.

To add a number to the exception list, dial *10*N#.

To delete a number from the exception list, dial *11*N#.



Your callers, other than your exceptions, either hear busy tone or are re-directed to your voicemail.

The only call that will ignore the Do Not Disturb rule will be one where you were the original caller, then performed an unsupervised transfer to another extension. If that extension does not answer, the call will be re-directed to you as the originator.