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Operation
User Manual 85
To cancel End-to-End DTMF Signalling mode
• 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)
PT
Tone Through mode is cancelled.
During a conversation
Press Tone
Through.
(Tone Through)