diff --git a/Config.h b/Config.h
index df112ef..c0ac7e8 100644
--- a/Config.h
+++ b/Config.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/IO.cpp b/IO.cpp
index 9f55a70..0b0d26c 100644
--- a/IO.cpp
+++ b/IO.cpp
@@ -119,6 +119,20 @@ void CIO::process()
 
 #if defined(CONSTANT_SRV_LED)
     LED_pin(HIGH);
+#elif defined(CONSTANT_SRV_LED_INVERTED)
+    LED_pin(LOW);
+#elif defined(DISCREET_SRV_LED)
+    if (m_ledCount == 10000U) LED_pin(LOW);
+    if (m_ledCount >= 480000U) {
+      m_ledCount = 0U;
+      LED_pin(HIGH);
+    };
+#elif defined(DISCREET_SRV_LED_INVERTED)
+    if (m_ledCount == 10000U) LED_pin(HIGH);
+    if (m_ledCount >= 480000U) {
+      m_ledCount = 0U;
+      LED_pin(LOW);
+    };
 #else
     if (m_ledCount >= 24000U) {
       m_ledCount = 0U;
diff --git a/configs/MMDVM_HS_Dual_Hat-12mhz.h b/configs/MMDVM_HS_Dual_Hat-12mhz.h
index 1802fa2..f115691 100644
--- a/configs/MMDVM_HS_Dual_Hat-12mhz.h
+++ b/configs/MMDVM_HS_Dual_Hat-12mhz.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/MMDVM_HS_Dual_Hat.h b/configs/MMDVM_HS_Dual_Hat.h
index b182724..1305fbf 100644
--- a/configs/MMDVM_HS_Dual_Hat.h
+++ b/configs/MMDVM_HS_Dual_Hat.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/MMDVM_HS_Hat-12mhz.h b/configs/MMDVM_HS_Hat-12mhz.h
index 8a11a90..e220f9d 100644
--- a/configs/MMDVM_HS_Hat-12mhz.h
+++ b/configs/MMDVM_HS_Hat-12mhz.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/MMDVM_HS_Hat.h b/configs/MMDVM_HS_Hat.h
index b4be985..6e190e3 100644
--- a/configs/MMDVM_HS_Hat.h
+++ b/configs/MMDVM_HS_Hat.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/NanoDV.h b/configs/NanoDV.h
index 9d90a4b..9dfe6ff 100644
--- a/configs/NanoDV.h
+++ b/configs/NanoDV.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/Nano_hotSPOT.h b/configs/Nano_hotSPOT.h
index 2ef0670..d0d1021 100644
--- a/configs/Nano_hotSPOT.h
+++ b/configs/Nano_hotSPOT.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/ZUMspot_Libre.h b/configs/ZUMspot_Libre.h
index df112ef..c0ac7e8 100644
--- a/configs/ZUMspot_Libre.h
+++ b/configs/ZUMspot_Libre.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/ZUMspot_RPi.h b/configs/ZUMspot_RPi.h
index 76c371a..f38b6cc 100644
--- a/configs/ZUMspot_RPi.h
+++ b/configs/ZUMspot_RPi.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/ZUMspot_USB.h b/configs/ZUMspot_USB.h
index fa4d85d..78fbadc 100644
--- a/configs/ZUMspot_USB.h
+++ b/configs/ZUMspot_USB.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/ZUMspot_duplex.h b/configs/ZUMspot_duplex.h
index d4bece9..31b58b2 100644
--- a/configs/ZUMspot_duplex.h
+++ b/configs/ZUMspot_duplex.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/generic_duplex_gpio.h b/configs/generic_duplex_gpio.h
index acea3b0..214b15b 100644
--- a/configs/generic_duplex_gpio.h
+++ b/configs/generic_duplex_gpio.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/configs/generic_gpio.h b/configs/generic_gpio.h
index 2b307f4..d03a361 100644
--- a/configs/generic_gpio.h
+++ b/configs/generic_gpio.h
@@ -67,8 +67,11 @@
 // Disable mode LEDs blink during scan mode:
 // #define QUIET_MODE_LEDS
 
-// Constant Service LED once repeater is running 
+// Engage a constant or descreet Service LED mode once repeater is running 
 // #define CONSTANT_SRV_LED
+// #define CONSTANT_SRV_LED_INVERTED
+// #define DISCREET_SRV_LED
+// #define DISCREET_SRV_LED_INVERTED
 
 // Use the YSF and P25 LEDs for NXDN
 // #define USE_ALTERNATE_NXDN_LEDS
diff --git a/version.h b/version.h
index 854259d..d0bbbfc 100644
--- a/version.h
+++ b/version.h
@@ -24,8 +24,8 @@
 
 #define VER_MAJOR       "1"
 #define VER_MINOR       "4"
-#define VER_REV         "1"
-#define VERSION_DATE    "20180709"
+#define VER_REV         "2"
+#define VERSION_DATE    "20180715"
 
 #if defined(ZUMSPOT_ADF7021)
 #define BOARD_INFO      "ZUMspot"