No DTMF echo on applicationmap features

Hi all,

Is there a way to suppress the DTMF-echo to the other leg of a call when pressing a feature-code in the applicationmap in features.conf ? ie: I press the feature-code, and the Asterisk handles the feature-code, but the other side of the call does not hear me pressing them.

Note that I do not want to disable DTMF echo completely, just for the featurecodes.