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40 User Manual
Completing a call to a busy party on an ISDN line (Completion of Calls to
Busy Subscriber [CCBS])
You can set the telephone to receive call-back ringing when a busy called party on an ISDN line
becomes free. When you answer the call-back ringing, the called party's telephone number is
automatically dialled.
To answer and call
To cancel
• If you connect to an ISDN line, the busy party will automatically be dialled.
"CCBS" will be displayed instead of "C.BCK". Refer to "Completing a call to a busy party on
an ISDN line" right below.
• If you do not answer a callback ringing during 4 callback rings, this feature will be cancelled.
• * Indication tone
Press “CCBS” or dial 6.
On-hook.
OR
C.Tone
DPT/SLT
CCBS
6
While hearing an indication tone*
Off-hook.
DPT/SLT
Off-hook.
Dial 713.
On-hook.
DPT/SLT
C.Tone
7 1 3
1 s