Panasonic KX-T7565 - Manual (Page 42)

Operation
42 User Manual
Sending a call waiting tone (Busy Station Signalling [BSS])
The other party will know your call is waiting.
• If "BSS" is not displayed or you hear a reorder tone, this feature is not 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]"
or the "Whisper OHCA" function can be applied. You can talk to the other party through the
speaker and the microphone (OHCA) or you only send a call announcement through the
handset (Whisper OHCA), while they are having another conversation using the handset.
• Whisper OHCA is activated when both you and the other party are using one of the KX-
T7500 series PTs.
Press "BSS" or dial 2 (or 1)*.
OR
While hearing a busy tone
PT / SLT
BSS
2 (or )* 1
*) 2: [SA], 1: Others