@miconda commented on this pull request.

In src/modules/rtpengine/rtpengine.c:

> @@ -2147,6 +2401,9 @@ static int child_init(int rank)
 		/* probe rtpengines only in first worker */
 		if(build_rtpp_socks(0, 1))
 			return -1;
+			
+		if (rtpengine_dtmf_event_sock.len > 0)
+			rtpengine_dtmf_events_loop(rank);

It seems to block the child process with rank 1 (PROC_SIPINIT), which should not be done, because it can create problems for other modules such as usrloc.

A new process has to be started -- in mod init, it has to be registered with:

		register_procs(1);
		cfg_register_child(1);

And in child init created with fork_process(), something like:

	if(rank == PROC_MAIN) {
	    /* fork worker process */
	    newpid = fork_process(PROC_RPC, "RTPENGINE DTMF WORKER", 1);
	    if(newpid < 0) {
		    LM_ERR("failed to fork worker process %d\n", i);
		    return -1;
	    } else if(newpid == 0) {
		    if(cfg_child_init())
			    return -1;
		    /* child - this will loop forever */
		    rtpengine_dtmf_events_loop();
	    } else {
		    /* parent process*/
	    }
		return 0;
	}

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