AASTRA DT292 for MX-ONE User Guide EN - Manual (Page 75)

75 DT292
Other Useful Features
Night Service
When the exchange is in Night Service mode, all your incoming
calls to the operator are transferred to a selected extension or
group of extensions. The exchange is equipped with three different
Night Service modes:
Common Night Service
All incoming calls to the operator are transferred to one specific
extension. Answer the call in the normal way.
Individual Night Service
Selected external calls to the operator are transferred to one
specific extension. Answer the call in the normal way.
Universal Night Service
All incoming calls to the operator are transferred to a universal
signalling device, e.g. the common bell. Answer the call as
described in section “ Common Bell Group ” on page 72.
Emergency mode
In the event of an emergency, the operator can set the exchange
into Emergency mode, during which only preprogrammed
extensions are permitted to make calls. If your extension is not
assigned with this category and you try to make a call, you will not
receive a dial tone.