diff -urN asterisk-1.6.2.7-rc2_orig/main/dsp.c asterisk-1.6.2.7-rc2/main/dsp.c
--- asterisk-1.6.2.7-rc2_orig/main/dsp.c	2010-04-30 00:12:31.000000000 +0200
+++ asterisk-1.6.2.7-rc2/main/dsp.c	2010-04-30 00:25:50.000000000 +0200
@@ -272,7 +272,13 @@
 
 typedef struct
 {
-	char digits[MAX_DTMF_DIGITS + 1];
+	char value;
+	long samples;
+} digit_t;
+
+typedef struct
+{
+	digit_t digits[MAX_DTMF_DIGITS + 1];
 	int current_digits;
 	int detected_digits;
 	int lost_digits;
@@ -513,7 +519,8 @@
 	s->current_digits = 0;
 	s->detected_digits = 0;
 	s->lost_digits = 0;
-	s->digits[0] = '\0';
+	s->digits[0].value = '\0';
+	s->digits[0].samples = 0;
 
 	if (mf) {
 		ast_mf_detect_init(&s->td.mf);
@@ -630,14 +637,22 @@
 {
 	s->detected_digits++;
 	if (s->current_digits < MAX_DTMF_DIGITS) {
-		s->digits[s->current_digits++] = digit;
-		s->digits[s->current_digits] = '\0';
+		s->digits[s->current_digits].value = digit;
+		s->digits[s->current_digits].samples = 0;
+		s->current_digits++;
+		s->digits[s->current_digits].value = '\0';
+		s->digits[s->current_digits].samples = 0;
 	} else {
 		ast_log(LOG_WARNING, "Digit lost due to full buffer\n");
 		s->lost_digits++;
 	}
 }
 
+static void store_digit_samples(digit_detect_state_t *s, long samples)
+{
+	s->digits[s->current_digits - 1].samples = samples;
+}
+
 static int dtmf_detect(struct ast_dsp *dsp, digit_detect_state_t *s, int16_t amp[], int samples, int squelch, int relax)
 {
 	float row_energy[4];
@@ -726,6 +741,8 @@
 		if (s->td.dtmf.current_hit) {
 			/* We are in the middle of a digit already */
 			if (hit != s->td.dtmf.current_hit) {
+				/* Save number of samples on first miss */
+				if (!s->td.dtmf.misses) store_digit_samples(s, s->td.dtmf.hits * DTMF_GSIZE);
 				s->td.dtmf.misses++;
 				if (s->td.dtmf.misses == s->td.dtmf.misses_to_end) {
 					/* There were enough misses to consider digit ended */
@@ -1394,23 +1411,25 @@
 		if (dsp->digit_state.current_digits) {
 			int event = 0;
 			char event_digit = 0;
+			long event_len = 0;
 
 			if (!dsp->dtmf_began) {
 				/* We have not reported DTMF_BEGIN for anything yet */
 
 				if (dsp->features & DSP_FEATURE_DIGIT_DETECT) {
 					event = AST_FRAME_DTMF_BEGIN;
-					event_digit = dsp->digit_state.digits[0];
+					event_digit = dsp->digit_state.digits[0].value;
 				}
 				dsp->dtmf_began = 1;
 
-			} else if (dsp->digit_state.current_digits > 1 || digit != dsp->digit_state.digits[0]) {
+			} else if (dsp->digit_state.current_digits > 1 || digit != dsp->digit_state.digits[0].value) {
 				/* Digit changed. This means digit we have reported with DTMF_BEGIN ended */
 				if (dsp->features & DSP_FEATURE_DIGIT_DETECT) {
 					event = AST_FRAME_DTMF_END;
-					event_digit = dsp->digit_state.digits[0];
+					event_digit = dsp->digit_state.digits[0].value;
+					event_len = dsp->digit_state.digits[0].samples * 1000 / SAMPLE_RATE;
 				}
-				memmove(dsp->digit_state.digits, dsp->digit_state.digits + 1, dsp->digit_state.current_digits);
+				memmove(dsp->digit_state.digits, dsp->digit_state.digits + sizeof(digit_t), dsp->digit_state.current_digits * sizeof(digit_t));
 				dsp->digit_state.current_digits--;
 				dsp->dtmf_began = 0;
 
@@ -1426,6 +1445,7 @@
 				memset(&dsp->f, 0, sizeof(dsp->f));
 				dsp->f.frametype = event;
 				dsp->f.subclass = event_digit;
+				dsp->f.len = event_len;
 				outf = &dsp->f;
 				goto done;
 			}
@@ -1607,7 +1627,7 @@
 		s->misses = 0;
 	}
 
-	dsp->digit_state.digits[0] = '\0';
+	dsp->digit_state.digits[0].value = '\0';
 	dsp->digit_state.current_digits = 0;
 }