Panasonic KX-TD612E User Manual

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2.2
Making Calls
Operation
41
 Sending a call waiting tone (Busy Station Signalling [BSS])
The party will know your call is waiting.
If you do not answer a callback ringing during 4 callback rings, this feature will be cancelled.
Indication tone
Availability of this feature depends on your telephone company.
The CCBS feature is in accordance with the ETS 300 359. (ETS: European 
Telecommunication Standard)
If "BSS" is not displayed or you hear a reorder tone, this feature has not been set at the 
other party's phone. This feature is only available if the called extension has set the "Call 
Waiting" feature.
Depending on the other party's telephone, the "Off-Hook Call Announcement (OHCA)" 
and the "Whisper OHCA" functions can be applied. You can talk to the other party through 
the speaker and the microphone (OHCA) or you can send a call announcement through the 
handset (Whisper OHCA), while they are having another conversation using the handset.
1 s
Press “BSS” or dial 2.
OR
DPT/SLT
BSS
2
While hearing a busy tone