• Depending on the type of the other party’s telephone, you may be able to talk to the
other party using the speaker and the microphone (Off-hook Call Announcement [OHCA]),
or you can send a call announcement through the handset (Whisper OHCA), if they are
having another conversation using the handset.
Refer to "1.9.3 Receiving Call Waiting (Call Waiting/Off-hook Call Announcement [OHCA]/
Whisper OHCA)".
• Depending on system programming and the called extension’s setting, a call waiting tone
may be sent automatically without performing the operation above.
Leaving a Message Waiting Indication/Calling Back the Caller Who Left an
Indication (Message Waiting)
For an extension leaving a message waiting indication
When the called extension is busy or does not answer your call, you
can leave a notification so that the called party may call you back.
For an extension receiving a message waiting indication
As a message receiver, the Message button light or Message/Ringer
Lamp lets you know that a call has been received. If you receive
notification, you can call the caller back by a simple operation.
For an extension leaving a message waiting indication
To leave a message waiting indication
PT/SLT/PS
Press MESSAGE
or enter 4.
On-hook.
When the called extension is busy or does not answer
OR
4
C.Tone
To leave/cancel a message waiting indication
PT/SLT/PS/SIP Extn./S-PS
Off-hook.
Enter 1 to leave
or 0 to cancel.
On-hook.
Enter desired
extension number.
Leave
Cancel
1
0
OR
07
Enter 70.
desired
extension no.
C.Tone
For an extension receiving a message waiting indication
To check the left message and call back
1.2.4 When the Dialled Line is Busy or There is No Answer
Operating Manual 41
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