I noticed that when I dial some 7 followed by any digit, the other side gets confused. I would like to double the milliseconds inter-digits in SendDTMF(). Is there a way to change both the DTMF duration and its interval?
From the CLI do:
core show application SendDTMF
Right there in the documentation it says you can specify the intra-tone time and the DTMF duration. You can also look on wiki.asterisk.org for the SendDTMF documentation.