--- asterisk-1.4.17.orig/main/channel.c	2008-02-04 13:46:37.000000000 +0100
+++ asterisk-1.4.17/main/channel.c	2008-02-05 10:38:51.000000000 +0100
@@ -2442,7 +2442,7 @@
 			break;
 		case AST_FRAME_DTMF_BEGIN:
 			ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name);
-			if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY) || 
+			if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY | AST_FLAG_EMULATE_DTMF) || 
 			    (!ast_tvzero(chan->dtmf_tv) && 
 			      ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) {
 				ast_log(LOG_DTMF, "DTMF begin ignored '%c' on %s\n", f->subclass, chan->name);