1. Please don’t post a link to another site with no explanation or summary of your question. Not only are you unlikely to get many responses with this approach, but some would consider it a bit rude.
2. As your post on StackOverflow is pertaining to Asterisk development, your question (whatever it happens to be) belongs on the asterisk-dev mailing list .
3. This looks similar to your previous ConfBridge/DTMF question on the asterisk-dev mailing list , although since you haven’t replied there, I’m not entirely sure. Either way, the advice in my reply still stands: please take the time to provide context to your question and to the code that you are asking about. Sending a large block of code that you’ve written with no context and asking someone to debug the problems you’re seeing is unlikely to generate the help you want.