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187 Model 57i CT IP Phone User Guide
Additional Features
Display DTMF Digits
A feature on the 57i CT 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.
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 softkey 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.