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Operational Features
41-001343-02 REV04 – 05.2014 5-55
Suppressing DTMF Playback
A feature on the IP phones allows administrators to enable or disable the suppression of DTMF playback when a number is
dialed from the softkeys and programmable keys.
When suppression of DTMF playback is disabled, and you press a softkey or programmable key, the IP phone dials the
stored number and displays each digit as dialed in the LCD window.
When the suppression of DTMF playback is enabled, the IP phone dials the stored number and displays the entire number
immediately in the LCD window, allowing the call to be dialed much faster.
DTMF playback suppression is enabled by default. The “suppress dtmf playback” parameter can be configured using the
configuration files.
Configuring Suppression of DTMF Playback
Use the following procedures to configure the suppression of DTMF playback on the IP phone.
Display DTMF Digits
A feature on the IP phones allows administrators 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 softkey or program-
mable 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 configuration files or the Aastra Web UI.
Configuring Display DTMF Digits
Use the following procedures to configure the display DTMF digits option on the IP phone.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the section, “Suppress DTMF Playback Setting” on pageA-143.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the section, “Display DTMF Digits Setting” on pageA-143.