Panasonic KX-TD500 User Manual page 85

Digital super hybrid system
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To cancel End-to-End DTMF Signalling mode
PT
During a conversation
(Tone Through)
Press Tone
Through.
Tone Through mode is cancelled.
If the dial type of the line is assigned to DTMF, Tone Through mode is established
automatically after the dialling sequence is finished and the call is established.
Tone Through button is effective during a call between two extensions or extension to
outside.
4.1 Customising Your Phone (Station Programming)
4.1.2 Customising the Buttons
Create or re-arrange a Tone Through button.
4.3 Customising Your System (User Programming)
4.3.5 Flexible CO Button Assignment (005)
Operation
2.4 During a Conversation
85

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