I’ve looked through the entire Wiki and even grep’d all the conf files for an answer about this and I have not found a method that changes the tone duration nor the interdigit timing either. I searched the forum and notice this question has been asked multiple times over the years but the questions never receive a response. I’m hopeful this thread doesn’t suffer a similar fate
I suspect it is only configurable in the source? If this is case, I would respectfully suggest these parameters should be easily configurable in a conf file somewhere.