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1.2 Making Calls
42 User Manual
To answer while hearing a callback ringing
To cancel (CCBS Cancel)
Sending a Call Waiting Notification (Call Waiting)
You can inform the called party that your call is waiting.
This feature is also known as Busy Station Signalling (BSS).
• If you do not answer within a specified time period, this feature will be cancelled.
• Availability of this feature depends on the ISDN service of your telephone company.
• 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 "1.8.3 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. For details, refer to "Automatic
Call Waiting" in "3.1.2 Settings on the Programming Mode".
PT/SLT/PS
Off-hook.
Off-hook.
PT/SLT/PS
On-hook.
4 6
Enter 46.
C.Tone
PT/SLT/PS
Enter 1.
While hearing a busy tone
1