Other Useful Features
Dialog 4422 IP Office72
Night Service
When the telephone system is in Night Service mode, all your 
incoming calls to the operator are transferred to a selected 
extension or group of extensions. The telephone system has 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, for example the common bell. Answer the call as 
described in section āCommon Bell Groupā on page 68.