Hello , My apologies, if this is not the right place to post this , I have marked the subject as Off Topic (OT) . We have a java application based on MJSIP library and we are in need to convert the application to the one using PJSIP library with various DTMF mode support. As of now the application uses SIP INFO as the dtmf mode. Along with that we would like to enhance the logging mechanism. If anyone is interested in the project, please private message me and we can talk into the details. Thank you Linux Guy !