AASTRA 53i ip phone 매뉴얼

Model 53i IP Phone User Guide  117

Display DTMF Digits

A feature on the IP phones allows users to enable or disable DTMF (dual-tone multi-
frequency) digits to display to the IP phone when using the keypad to dial, or when 
dialing from a programmable key.
DTMF is the signal sent from the phone to the network that you generate when you 
press the phone’s touch keys. This is also known as “touchtone” dialing. Each key 
you press on your phone generates two tones of specific frequencies. One tone is 
generated from a high-frequency group of tones and the other from a low frequency 
group.
If you enable the Display DTMF Digits parameter, the digits you are dialing from the 
keypad or from a programmable key display to the IP phone’s LCD display. This 
parameter is disabled by default (no digits display when dialing).
You can enable the "Display DTMF Digits" parameter using the Aastra Web UI.

Configuring Display of DTMF Digits

Use the following procedure to configure the display of DTMF digits on the IP 
phone.

1. Click on Basic Settings->Preferences->General.

2. Enable the "Display DTMF Digits" field by checking the check box.

Disable this field by unchecking the box). Default is disabled.

3. Click 

 to save your settings.

Aastra Web UI

Note: "Display DTMF Digits" is disabled by default.