AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 345)

5-68 41-001343-01 Rev 03, Release 3.2.2
Display DTMF Digits
A feature on the IP phones allows users and 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 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 configuration files or the Aastra
Web UI.
Configuring Display DTMF Digits
Use the following procedures to configure the suppression of DTMF playback on the IP phone.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the section, “Display DTMF
Digits Setting” on page A-182.