1.2.4 When the Dialled Line is Busy or There is No Answer

To answer the callback ringing from an idle outside line

PT/SLT/PS

While hearing a callback ringing

outside

phone no.

Off-hook.

Dial outside phone

Talk.

 

number.

 

• If you do not answer the callback ringing within 10 seconds, this feature will be cancelled.

To cancel callback ringing (Automatic Callback Busy Cancel)

PT/SLT/PS

4 6

C.Tone

Off-hook.Enter46.On-hook.

Setting Callback on an ISDN Line (Completion of Calls to Busy Subscriber [CCBS])

You can set the telephone to receive callback ringing when a busy called party on an ISDN line becomes free. When you answer the callback ringing, the called party’s telephone number is automatically dialled.

PT/SLT/PS

While hearing a busy tone

6

C.Tone

Enter 6.

On-hook.

42 User Manual