diff --git a/src/gprs_ms.cpp b/src/gprs_ms.cpp
index fe560e8..b40e1ea 100644
--- a/src/gprs_ms.cpp
+++ b/src/gprs_ms.cpp
@@ -90,7 +90,8 @@
 	m_is_idle(true),
 	m_ref(0),
 	m_list(this),
-	m_delay(0)
+	m_delay(0),
+	m_nack_rate_dl(0)
 {
 	LOGP(DRLCMAC, LOGL_INFO, "Creating MS object, TLLI = 0x%08x\n", tlli);
 
@@ -383,6 +384,8 @@
 	/* TODO: Check for TBF direction */
 	/* TODO: Support different CS values for UL and DL */
 
+	m_nack_rate_dl = error_rate;
+
 	if (error_rate > bts_data->cs_adj_upper_limit) {
 		if (m_current_cs_dl > 1) {
 			m_current_cs_dl -= 1;
diff --git a/src/gprs_ms.h b/src/gprs_ms.h
index 6752b2b..0538723 100644
--- a/src/gprs_ms.h
+++ b/src/gprs_ms.h
@@ -99,6 +99,7 @@
 
 	void update_l1_meas(const pcu_l1_meas *meas);
 	const pcu_l1_meas* l1_meas() const {return &m_l1_meas;};
+	unsigned nack_rate_dl() const;
 
 	/* internal use */
 	static void timeout(void *priv_);
@@ -138,6 +139,7 @@
 	int64_t m_last_cs_not_low;
 
 	pcu_l1_meas m_l1_meas;
+	unsigned m_nack_rate_dl;
 };
 
 inline uint32_t GprsMs::tlli() const
@@ -193,3 +195,8 @@
 	return &m_llc_queue;
 }
 
+inline unsigned GprsMs::nack_rate_dl() const
+{
+	return m_nack_rate_dl;
+}
+
diff --git a/src/pcu_vty_functions.cpp b/src/pcu_vty_functions.cpp
index 4f54e8e..c8f8198 100644
--- a/src/pcu_vty_functions.cpp
+++ b/src/pcu_vty_functions.cpp
@@ -82,6 +82,9 @@
 		vty_out(vty, "  Burst timing offset:    %d/4 bit%s",
 			ms->l1_meas()->bto, VTY_NEWLINE);
 	if (ms->l1_meas()->have_ms_rx_qual)
+		vty_out(vty, "  Downlink NACK rate:     %d %%%s",
+			ms->nack_rate_dl(), VTY_NEWLINE);
+	if (ms->l1_meas()->have_ms_rx_qual)
 		vty_out(vty, "  MS RX quality:          %d %%%s",
 			ms->l1_meas()->ms_rx_qual, VTY_NEWLINE);
 	if (ms->l1_meas()->have_ms_c_value)