12.2. Service Information 
In the OpenScape 4000, you can set up as many as 50 time classes using
the AMO SIPCO. Local times have a fixed offset (in minutes: west or east)
to the system time.
You can assign a time class to an IPDA shelf with the AMO UCSU. In
this way, all Digits that have a display and that are configured on this
shelf use this time class.
You can assign a time class to an HFA station with the AMO SDAT. If
an HFA station that is configured on an IPDA shelf has no time class
configured, the time class of the IPDA shelf is used. As soon as this
HFA station is given a time class with the AMO SDAT, the time class of
the IPDA shelf is ignored for this station.
The net must be also defined in AMO SIPCO, if only HFA subscribers
are configured in a differed time zone.
- Using the IPDA wizard in the OpenScape 4000 Assistant, the time zones must be configured before in menu: Configuration Management -> System data -> IPDA -> IPDA data
- The time class (TCLASS) in AMO SDAT can only be changed for HFA subscribers.
Restrictions
- “HFA Mobile User” is not supported. A user’s display shows the time that has been configured for his or her phone, even if he or she has logged in a different time zone.
- Timed reminders are not supported. The timed reminder function is blocked if a telephone has a local time class configured.
- Call detail recording is done in the system time.
- Error messages are output with the system time.
- In the case of an APE (CCAP) taking over control, it will function in place of the computer in the host system (CCA/CCB) with a copy of the database from HHS. If the "Different Time Zones (DTZ)" function (AMO TCLASS) is configured or if HHS and access points are distributed across multiple timezones, the APE (CCAP) must be configured to the same time as the HHS (CCA/CCB/ADP), to ensure correct time display in case of an APE emergency (CC-AP has taken over control).