Siemens HICOM Hicom 300 User Manual page 24

If the called extension is a screen based digital telephone with a Mailbox key
a message will be left in the user's mailbox to call your extension.
Should you fail to answer a Call Back that you have activated, the system
will automatically cancel the feature after ringing your extension for a
predetermined time.
Cancel Call Back
- press key and scroll to Display Call Back option
- press
EXTENSION AND NAME
DATE AND TIME
- scroll to Delete? option
- press
Call Back Message Request
In your absence a caller has left a Call Back request on your extension.
- Mailbox LED is on
- press Mailbox key
NAME
DATE AND TIME
- press Forward Scroll key and scroll to Output? option
- press
- caller appearing on display will be called
24
Call Back - Cont'd
key to confirm Display Call Back option
key to confirm Delete? option
CALL N
key to confirm Output? option