--- chan_dahdi.c	2008-12-22 21:56:29.000000000 +0100
+++ chan_dahdi_1.c	2009-02-16 09:42:02.000000000 +0100
@@ -5016,9 +5016,11 @@
 			} else if (f->frametype == AST_FRAME_DTMF) {
 #ifdef HAVE_PRI
 				if (!p->proceeding && p->sig==SIG_PRI && p->pri && p->pri->overlapdial) {
-					/* Don't accept in-band DTMF when in overlap dial mode */
-					f->frametype = AST_FRAME_NULL;
-					f->subclass = 0;
+					if (!p->outgoing) { /* Don't accept DTMF in overlap only in incoming calls - Like case 7511 in chan_zap.c  - short patch*/

+						/* Don't accept in-band DTMF when in overlap dial mode */
+						f->frametype = AST_FRAME_NULL;
+						f->subclass = 0;
+					}
 				}
 #endif				
 				/* DSP clears us of being pulse */