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Model 55i IP Phone User Guide 111
Additional Features
Display DTMF Digits
A feature on the 55i phone 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 softkey or 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. These changes are not dynamic.
You must restart your IP phone for the changes to take affect.
4. Click on Operation->Reset.
5. In the "Restart Phone" field click to restart the IP phone and
apply the changes.
Aastra Web UI