Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 374095)
+++ channels/chan_sip.c	(working copy)
@@ -18981,6 +18981,12 @@
 		 * otherwise use the body as the signal */
 		if (strcasecmp(c, "application/dtmf")) {
 			const char *msg_body;
+			if ((ast_test_flag(&p->flags[0], SIP_DTMF) == SIP_DTMF_INBAND)) { //ALEC
+				ast_log(LOG_WARNING, "Ignoring DTMF_INFO message as DTMF_INBAND is set on "
+						"call %s\n", p->callid);
+				transmit_response(p, "200 OK", req);
+				return;
+			}
 
 			if (   ast_strlen_zero(msg_body = get_body(req, "Signal", '='))
 				&& ast_strlen_zero(msg_body = get_body(req, "d", '='))) {