8.12.2.2. Interactions with other Features 
Call Forwarding
When an ONS group is created the callf orwarding activation status
of the ONS master is relevant for the incoming ONS calls. The idle display
is updated at the internal ONS members if necessary. Any change of this
status by one of the internal ONS members leads to the ONS group callforwarding
status change. Changes via AMO or via ACL service are also effective
for the whole ONS group. Call deflect from an ONS member alerted by an
incoming call to the static CFW destination of the ONS group is possible.
Notes for SIP subscribers:
Activation/Deactivation of Call Forwarding types using AMO ACTDA for
one SIP ONS member is propagated to all SIP ONS members.
Setting of Call Forwarding using AMO ZIEL is not possible for SIP
devices. Therefore it does not apply for SIP ONS groups.
Call Forward Busy set with AMO ACTDA is executed only if COS MULTRA
is not set.
Do not disturb
Do not disturb is also an ONS group feature. The ONS master status
for DND determines the DND group status. Any internal ONS member can
change this DND status for the whole ONS group. Changes via AMO or via
ACL service are also effective for the whole ONS group.
Call Waiting
If call waiting as ONS group feature is activated then a second call
to the ONS group is alerting the group even if one ONS member is busy.
Call waiting can be (de)activated by a key at the device of the ONS member.
Exception: If all internal ONS devices are anates then the
call waiting feature is (de)activated by the AMO AUN parameter PUSECOND.
Message waiting indication (MWI)
Message waiting indication (MWI) is an ONS group feature. MWIs to
the ONS group are stored at the ONS master; the status of the MWI led
is shown at all internal ONS members.
Call Logs
Call Logs of the ONS group are stored in the call log of the ONS master
and can be accessed by any internal digite ONS member. Simultaneous menu
access to the call log is prevented. Call log is only supported if the
ONS master is a digite.
Callback
Callback activated by an ONS member to another station is not an ONS
group feature. Callback execution only alerts the ONS member who has
activated callback.
Callback activation to the ONS group, however, is an ONS feature.
All members are alerted after callback execution.
Message waiting callback to the ONS group is also an ONS group feature.
IMPORTANT:
For SIP subscribers If a slave has COS MULTRA
set and is busy then Callback Busy cannot be set.
IMPORTANT:
If Callback Busy is set when a slave is busy,
it is not executed when the slave goes idle. The master should go idle
to invoke callback.
Recalls
Recalls to an ONS member are not ONS group calls; they are only alerting
the ONS member who has previously transferred the call.
Campon/Override
Campon or override to a busy ONS group is possible.
Keyset
ONS master and ONS secondary extension numbers must not appear at
any other keyset. ONS devices may have secondary lines from any other
non ONS keysets.
Conference
One ONS member can call another ONS member of the same group (ONS
internal call). This call is not alerting any other ONS group members.
Therefore it is possible to establish a conference with outside partners
and with members of the same ONS group.
Handover
Handover of ONS connections from one internal ONS member to another
internal ONS member is possible.
- Handover by active extension: A digite ONS member presses the parkkey in talk state. Then the call is parked and the parkkey led of all digite ONS group members starts flashing. The former active ONS subscriber goes onhook and the call can be retrieved by the parkkey.
- Handover by passive extension: If there is one basic ONS connection active then another ONS member can retrieve the call by pressing the parkkey. Anates and digites without a parkkey can use the associated accesscode for parking and retrieving a call.
Hunt Group
Only master devices of an ONS group are allowed to be members of a
hunt group (but not master). Wird eine ONS-Gruppe über einen Sammelanschluss
belegt, wird der AMO AUN Parameter SMPF grundsätzlich ignoriert.
The secondary member of an ONS group is able to log on/log off the
master of the ONS group (which is also a member of a hunt group) to/from
the hunt group.
IMPORTANT:
For SIP subscribers: If the ONS master is a SIP
phone, then the following hunt group and SIP phone restriction applies:
A functional device (or SIP device) configured in a hunt group must never
have the parameter MULTRA set in AMO COSSU!
DSS key
Calls via DSS key with an ONS number are alerting the whole ONS group.
Service Information
The LED of the DSS key for an ONS master number indicates the state
of the ONS group:
- If the ONS group is idle then the LED is off.
- If the ONS group is busy then the LED is on.
- If the ONS group is ringing then the LED is flashing.
For an ONS secondary number the LED of the DSS key indicates the state
of the ONS secondary member.
Generation
For a station the ONS master or secondary number is configured as
destination for a DSS key. This can be done via AMO ZIEL as well as via
programming by the user at the phone.