Panasonic KX-TD500 - End-To-End DTMF Signaling (Tone Through)

Station Features and Operation (PT/SLT)
258 User Manual
4.3.32 End-to-End DTMF Signaling (Tone Through)
DTMF signaling is required for access to special network services offered by some telephone
companies. This system allows you to signal the other end using DTMF tones during an
established call.
End-to-End DTMF Signaling (1)
End-to-End DTMF Signaling (2) (When "Automatic Hold" is enabled)
PT
DTMF signal is sent to the other end
while dialing.
During a conversation;
required code
Dial the required code.
PT
During a conversation;
(Tone Through)
Press Tone Through
(flexible button).
required code
Dial the required code.
DTMF signal is sent to the other end
while dialing.