Unify OpenScape 4000/HiPath 4000 - Saving phone numbers for Redial on a line; Line mailbox

88 Making calls via multiple lines
Saving phone numbers for "Redial on a line"
Prerequisite: "Saved number redial for a specific line" is configured and not
"Saved number redial (last number dialed)".
Saving the dialed phone number or a caller’s phone number
You have called a party on a particular line and this call is still in progress. Or,
you were called by another party whose phone number is displayed, and this call
is still in progress.
, Press the key shown. The phone number is saved for the current line.
n Press the key shown. The LED goes out.
or
\ Replace the handset.
Line mailbox
Callers who wish to reach you when you are absent can leave a message on the
mailbox for the relevant line.

Both voice and fax messages can be stored in the mailbox (if so configured).
Prerequisite: A mailbox is configured for one or more lines.
Please note that only one user can edit one mailbox at any time.
If your phone belongs to an ONS group (parallel call  page 104), please
note the following:
Signaling is available for the mailbox (MWI) on all phones in an ONS
group.