Index: channels/chan_dahdi.c
===================================================================
--- channels/chan_dahdi.c	(revision 202567)
+++ channels/chan_dahdi.c	(working copy)
@@ -10354,6 +10354,7 @@
 	}
 
 	if (MWI_SEND_DONE == pvt->mwisend_data.mwisend_current) {
+		ioctl(pvt->subs[SUB_REAL].dfd, DAHDI_SETCADENCE, NULL);
 		if (pvt->cidspill) {
 			ast_free(pvt->cidspill);
 			pvt->cidspill = NULL;
@@ -10364,6 +10365,7 @@
 	}
 	return 0;
 quit:
+	ioctl(pvt->subs[SUB_REAL].dfd, DAHDI_SETCADENCE, NULL);
 	if (pvt->cidspill) {
 		ast_free(pvt->cidspill);
 		pvt->cidspill = NULL;