AASTRA DT690 - Manual (Page 105)

1424-EN/LZT103 088 Uen F5 2012-03-14 105
O THER U SEFUL F EATURES
18.8 Do Not Disturb (DND)
This feature is used to avoid that incoming calls are indicated in a tele-
phone. However you can still use the telephone for outgoing calls as
usual. The calling party receives a number unobtainable tone and a
display message is informing about this feature
18.8.1 To order do not disturb
To order do not disturb, do the following:
1. Lift the handset (dial tone)
2. Press *27#.
3. Replace the handset.
18.8.2 To cancel do not disturb
To cancel do not disturb, do the following:
1. Lift the handset (special dial tone)
2. Press #27# (dial tone).
3. Replace the handset.