Panasonic KX-TEB308 - Manual (Page 80)

1.7 Setting the Telephone According to Your Needs
80 User Manual
1.7.6 Protecting Your Line against Notification Tones (Data Line
Security)
You can protect the line against audible notification tones, such as call waiting tones or hold alarm tones
during a conversation. Set this feature if your extension has a data communication device such as a
computer or fax machine connected, to ensure secure data transmission.
To set/cancel
Off-hook. On-hook. Enter 1 to set
or 0 to cancel.
PT/SLT
Enter 730.
3 0 7
C.Tone
Set
Cancel
1
0
OR
Enter #.
An SLT user can enter "0"
instead of "#".