Operational Features41-001160-03, Rev 00, Releaes 2.4 5-65Configuring Operational FeaturesDisplay DTMF DigitsA feature on the IP phones allows users and administrators to enable or disableDTMF (dual-tone multi-frequency) digits to display to the IP phone when usingthe 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 whenyou press the phone’s touch keys. This is also known as “touchtone” dialing. Eachkey you press on your phone generates two tones of specific frequencies. Onetone is generated from a high-frequency group of tones and the other from a lowfrequency group.If you enable the Display DTMF Digits parameter, the digits you are dialing fromthe keypad or from a softkey or programmable key display to the IP phone’s LCDdisplay. This parameter is disabled by default (no digits display when dialing).You can enable the “Display DTMF Digits” parameter using the configurationfiles or the Aastra Web UI.Configuring Display DTMF DigitsUse the following procedures to configure the suppression of DTMF playback onthe IP phone.Configuration FilesFor specific parameters you can set in the configuration files, see Appendix A, the section, “Display DTMFDigits Setting” on page A-174.Draft 1
