Siemens HiPath 4000 - Manual (Page 46)

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Special functions for One Number Service
46
Special functions for One Number
Service
If your telephone is integrated in an ONS group (ONS =
"One Number Service"), you may be reached on all other
telephones in this group, just as on your own tele-
phone. For setting up an ONS group, contact your ad-
ministrator.
An ONS group can consist of a maximum of
3 telephones (phone numbers).
One member of the group may be an external tele-
phone (e.g. a mobile telephone). One telephone in the
group is the "master" (A); the master's phone number is
also received by the other parties (B, C) in the ONS
group.
If A, B or C is called, all telephones in the ONS group
ring. If A, B or C is busy, all telephones in the ONS group
are busy (busy tone for a caller from outside the ONS
group). Each telephone within the ONS group may be
reached at its original phone number.
The following features have further effects for internal
party telephones within an ONS-group:
•
Call waiting page 22
• Call Forwarding page 33
• Do not disturb page 40
• Line mailbox (MWI) page 21
• Callback page 13
If your ONS group contains a mobile tele-
phone, make sure that it is always available
(switched on). Otherwise the mobile mailbox
may answer the call prematurely, which can
lead to problems when signaling the call on
the other ONS group members.
A (Master) B C
ONS-Group