diff --git a/src/include/switch_types.h b/src/include/switch_types.h
index f0c6dfed01..783b48e3b1 100644
--- a/src/include/switch_types.h
+++ b/src/include/switch_types.h
@@ -672,15 +672,6 @@ typedef enum {
 	  This flag will treat every dtmf as if it were 50ms and queue it on recipt of the leading packet rather than at the end.
 	 */
 
-	RTP_BUG_PAUSE_BETWEEN_DTMF = (1 << 7)
-
-	/*
-	  Sonus says they need time to generate the dtmf so we should not send it so fast so with this flag we will wait a few clicks after each send to 
-	  start sending the next one.
-	*/
-
-
-
 } switch_rtp_bug_flag_t;
 
 #ifdef _MSC_VER
diff --git a/src/mod/endpoints/mod_sofia/sofia_glue.c b/src/mod/endpoints/mod_sofia/sofia_glue.c
index b9f4ca0f4f..d0d75bfb1f 100644
--- a/src/mod/endpoints/mod_sofia/sofia_glue.c
+++ b/src/mod/endpoints/mod_sofia/sofia_glue.c
@@ -6549,14 +6549,6 @@ void sofia_glue_parse_rtp_bugs(switch_rtp_bug_flag_t *flag_pole, const char *str
 	if (switch_stristr("~IGNORE_DTMF_DURATION", str)) {
 		*flag_pole &= ~RTP_BUG_IGNORE_DTMF_DURATION;
 	}
-
-	if (switch_stristr("PAUSE_BETWEEN_DTMF", str)) {
-		*flag_pole |= RTP_BUG_PAUSE_BETWEEN_DTMF;
-	}
-
-	if (switch_stristr("~PAUSE_BETWEEN_DTMF", str)) {
-		*flag_pole &= ~RTP_BUG_PAUSE_BETWEEN_DTMF;
-	}
 }
 
 char *sofia_glue_gen_contact_str(sofia_profile_t *profile, sip_t const *sip, sofia_dispatch_event_t *de, sofia_nat_parse_t *np)
diff --git a/src/switch_rtp.c b/src/switch_rtp.c
index 020f8aea57..eb431d0e3b 100644
--- a/src/switch_rtp.c
+++ b/src/switch_rtp.c
@@ -46,9 +46,6 @@
 #include <datatypes.h>
 #include <srtp.h>
 
-/* number of writes to delay sending new DTMF when RTP_BUG_PAUSE_BETWEEN_DTMF flag is set */
-#define BUGGY_DIGIT_DELAY_PERIOD 5
-
 #define READ_INC(rtp_session) switch_mutex_lock(rtp_session->read_mutex); rtp_session->reading++
 #define READ_DEC(rtp_session)  switch_mutex_unlock(rtp_session->read_mutex); rtp_session->reading--
 #define WRITE_INC(rtp_session)  switch_mutex_lock(rtp_session->write_mutex); rtp_session->writing++
@@ -141,7 +138,6 @@ struct switch_rtp_rfc2833_data {
 	switch_queue_t *dtmf_inqueue;
 	switch_mutex_t *dtmf_mutex;
 	uint8_t in_digit_queued;
-	uint32_t out_digit_delay;
 };
 
 struct switch_rtp {
@@ -187,6 +183,9 @@ struct switch_rtp {
 	uint32_t last_read_ts;
 	uint32_t last_cng_ts;
 	uint32_t last_write_samplecount;
+	uint32_t next_write_samplecount;
+	uint32_t max_next_write_samplecount;
+	uint32_t queue_delay;
 	switch_time_t last_write_timestamp;
 	uint32_t flags;
 	switch_memory_pool_t *pool;
@@ -2233,19 +2232,22 @@ SWITCH_DECLARE(void) switch_rtp_clear_flag(switch_rtp_t *rtp_session, switch_rtp
 	}
 }
 
-static void set_dtmf_delay(switch_rtp_t *rtp_session, uint32_t ms)
+static void set_dtmf_delay(switch_rtp_t *rtp_session, uint32_t ms, uint32_t max_ms)
 {
-	int mspp = 20;
+	int upsamp, max_upsamp;
+	
+	if (!max_ms) max_ms = ms;
 
-	if (rtp_session->ms_per_packet) {
-		if (!(mspp = (int) (rtp_session->ms_per_packet / 1000))) {
-			mspp = 20;
-		}
+	upsamp = ms * (rtp_session->samples_per_second / 1000);
+	max_upsamp = max_ms * (rtp_session->samples_per_second / 1000);
+
+	rtp_session->queue_delay = upsamp;
+
+	if (switch_test_flag(rtp_session, SWITCH_RTP_FLAG_USE_TIMER)) {
+		rtp_session->max_next_write_samplecount = rtp_session->timer.samplecount + max_upsamp;
 	}
-	
-	rtp_session->dtmf_data.out_digit_delay += (ms / mspp);
-	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Queue digit delay of %dms\n", ms);
-	
+
+	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Queue digit delay of %dms\n", ms);	
 }
 
 static void do_2833(switch_rtp_t *rtp_session, switch_core_session_t *session)
@@ -2253,16 +2255,15 @@ static void do_2833(switch_rtp_t *rtp_session, switch_core_session_t *session)
 	switch_frame_flag_t flags = 0;
 	uint32_t samples = rtp_session->samples_per_interval;
 
-	if (rtp_session->dtmf_data.out_digit_delay) {
-		rtp_session->dtmf_data.out_digit_delay--;
-		return;
-	}
-
 	if (!rtp_session->sending_dtmf > 1) {
 		rtp_session->sending_dtmf--;
 		return;
 	}
 
+	if (!rtp_session->last_write_ts) {
+		return;
+	}
+	
 	if (rtp_session->dtmf_data.out_digit_dur > 0) {
 		int x, loops = 1;
 
@@ -2290,29 +2291,32 @@ static void do_2833(switch_rtp_t *rtp_session, switch_core_session_t *session)
 			rtp_session->stats.outbound.raw_bytes += wrote;
 			rtp_session->stats.outbound.dtmf_packet_count++;
 
+			if (loops == 1) {
+				rtp_session->last_write_ts += samples;
 
-			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Send %s packet for [%c] ts=%u dur=%d/%d/%d seq=%d\n",
+				if (rtp_session->rtp_bugs & RTP_BUG_SONUS_SEND_INVALID_TIMESTAMP_2833) {
+					rtp_session->dtmf_data.timestamp_dtmf = rtp_session->last_write_ts;
+				}
+			}
+
+			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Send %s packet for [%c] ts=%u dur=%d/%d/%d seq=%d lw=%d\n",
 							  loops == 1 ? "middle" : "end", rtp_session->dtmf_data.out_digit,
 							  rtp_session->dtmf_data.timestamp_dtmf,
 							  rtp_session->dtmf_data.out_digit_sofar,
-							  rtp_session->dtmf_data.out_digit_sub_sofar, rtp_session->dtmf_data.out_digit_dur, rtp_session->seq);
-			if (loops == 1 && rtp_session->rtp_bugs & RTP_BUG_SONUS_SEND_INVALID_TIMESTAMP_2833) {
-				rtp_session->dtmf_data.timestamp_dtmf = rtp_session->last_write_ts + samples;
-			}
+							  rtp_session->dtmf_data.out_digit_sub_sofar, rtp_session->dtmf_data.out_digit_dur, rtp_session->seq, rtp_session->last_write_ts);
 		}
 
 		if (loops != 1) {
-			rtp_session->sending_dtmf = -1;
+			rtp_session->sending_dtmf = 0;
 			rtp_session->need_mark = 1;
 			
 			if (switch_test_flag(rtp_session, SWITCH_RTP_FLAG_USE_TIMER)) {
 				rtp_session->last_write_samplecount = rtp_session->timer.samplecount;
 			}
-			rtp_session->dtmf_data.out_digit_dur = 0;
 
-			if ((rtp_session->rtp_bugs & RTP_BUG_PAUSE_BETWEEN_DTMF)) {
-				rtp_session->dtmf_data.out_digit_delay = BUGGY_DIGIT_DELAY_PERIOD;
-			}
+			rtp_session->dtmf_data.out_digit_dur = 0;
+			set_dtmf_delay(rtp_session, 40, 500);
+
 			return;
 		}
 	}
@@ -2320,6 +2324,25 @@ static void do_2833(switch_rtp_t *rtp_session, switch_core_session_t *session)
 	if (!rtp_session->dtmf_data.out_digit_dur && rtp_session->dtmf_data.dtmf_queue && switch_queue_size(rtp_session->dtmf_data.dtmf_queue)) {
 		void *pop;
 
+		if (switch_test_flag(rtp_session, SWITCH_RTP_FLAG_USE_TIMER)) {
+			if (rtp_session->last_write_ts < rtp_session->next_write_samplecount && rtp_session->timer.samplecount < rtp_session->max_next_write_samplecount) {
+				return;
+			}
+			if (rtp_session->timer.samplecount >= rtp_session->max_next_write_samplecount) {
+				rtp_session->queue_delay = 0;
+			}
+
+		} else {
+			if (rtp_session->last_write_ts < rtp_session->next_write_samplecount) {
+				return;
+			}
+		}
+		
+		if (rtp_session->queue_delay) {
+			return;
+		}
+
+
 		if (!rtp_session->sending_dtmf) {
 			rtp_session->sending_dtmf = 2;
 			return;
@@ -2330,13 +2353,13 @@ static void do_2833(switch_rtp_t *rtp_session, switch_core_session_t *session)
 			switch_size_t wrote;
 
 			if (rdigit->digit == 'w') {
-				set_dtmf_delay(rtp_session, 500);
+				set_dtmf_delay(rtp_session, 500, 0);
 				free(rdigit);
 				return;
 			}
 
 			if (rdigit->digit == 'W') {
-				set_dtmf_delay(rtp_session, 1000);
+				set_dtmf_delay(rtp_session, 1000, 0);
 				free(rdigit);
 				return;
 			}
@@ -2353,22 +2376,25 @@ static void do_2833(switch_rtp_t *rtp_session, switch_core_session_t *session)
 			rtp_session->dtmf_data.out_digit_packet[2] = (unsigned char) (rtp_session->dtmf_data.out_digit_sub_sofar >> 8);
 			rtp_session->dtmf_data.out_digit_packet[3] = (unsigned char) rtp_session->dtmf_data.out_digit_sub_sofar;
 
-			rtp_session->dtmf_data.timestamp_dtmf = rtp_session->last_write_ts + samples;
 
+			rtp_session->dtmf_data.timestamp_dtmf = rtp_session->last_write_ts + samples;
+			rtp_session->last_write_ts = rtp_session->dtmf_data.timestamp_dtmf;
+			
 			wrote = switch_rtp_write_manual(rtp_session,
 											rtp_session->dtmf_data.out_digit_packet,
 											4,
 											rtp_session->rtp_bugs & RTP_BUG_CISCO_SKIP_MARK_BIT_2833 ? 0 : 1,
 											rtp_session->te, rtp_session->dtmf_data.timestamp_dtmf, &flags);
 
+			
 			rtp_session->stats.outbound.raw_bytes += wrote;
 			rtp_session->stats.outbound.dtmf_packet_count++;
-
-			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Send start packet for [%c] ts=%u dur=%d/%d/%d seq=%d\n",
+			
+			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Send start packet for [%c] ts=%u dur=%d/%d/%d seq=%d lw=%d\n",
 							  rtp_session->dtmf_data.out_digit,
 							  rtp_session->dtmf_data.timestamp_dtmf,
 							  rtp_session->dtmf_data.out_digit_sofar,
-							  rtp_session->dtmf_data.out_digit_sub_sofar, rtp_session->dtmf_data.out_digit_dur, rtp_session->seq);
+							  rtp_session->dtmf_data.out_digit_sub_sofar, rtp_session->dtmf_data.out_digit_dur, rtp_session->seq, rtp_session->last_write_ts);
 
 			free(rdigit);
 		}
@@ -3768,14 +3794,10 @@ static int rtp_common_write(switch_rtp_t *rtp_session,
 
 	this_ts = ntohl(send_msg->header.ts);
 
-	if (!switch_rtp_ready(rtp_session) || rtp_session->sending_dtmf || !this_ts) {
+	if (!switch_rtp_ready(rtp_session) || rtp_session->sending_dtmf || !this_ts || this_ts < rtp_session->last_write_ts) {
 		send = 0;
 	}
 
-	if (rtp_session->sending_dtmf == -1) {
-		rtp_session->sending_dtmf = 0;
-		
-	}
 
 	if (send) {
 		send_msg->header.seq = htons(++rtp_session->seq);
@@ -3886,6 +3908,13 @@ static int rtp_common_write(switch_rtp_t *rtp_session,
 		}
 		rtp_session->last_write_ts = this_ts;
 
+		if (rtp_session->queue_delay) {
+			rtp_session->next_write_samplecount = rtp_session->last_write_ts + rtp_session->queue_delay;
+			rtp_session->queue_delay = 0;
+		}
+
+
+
 		rtp_session->stats.outbound.raw_bytes += bytes;
 		rtp_session->stats.outbound.packet_count++;