End-To-End Dtmf Signaling (Tone Through) - Panasonic KX-TD500 User Manual

Station Features and Operation (PT/SLT)

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)
PT
During a conversation;
required code
Dial the required code.
DTMF signal is sent to the other end
while dialing.
End-to-End DTMF Signaling (2) (When "Automatic Hold" is enabled)
PT
During a conversation;
(Tone Through)
Press Tone Through
(flexible button).
258
required code
Dial the required code.
DTMF signal is sent to the other end
while dialing.
User Manual