diff --git a/libs/ysig/sigtran.cpp b/libs/ysig/sigtran.cpp
index f1894abd..eddaa6fe 100644
--- a/libs/ysig/sigtran.cpp
+++ b/libs/ysig/sigtran.cpp
@@ -546,6 +546,18 @@ void SIGAdaptClient::detach(SIGAdaptUser* user)
     }
 }
 
+// Status notification from transport layer
+void SIGAdaptClient::notifyLayer(SignallingInterface::Notification status)
+{
+    switch (status) {
+	case SignallingInterface::LinkDown:
+	case SignallingInterface::HardwareError:
+	    setState(AspDown);
+	    break;
+	default:
+	    return;
+    }
+}
 // Request activation of the ASP
 bool SIGAdaptClient::activate()
 {
diff --git a/libs/ysig/yatesig.h b/libs/ysig/yatesig.h
index 4c47fd13..eb259df6 100644
--- a/libs/ysig/yatesig.h
+++ b/libs/ysig/yatesig.h
@@ -4700,6 +4700,12 @@ public:
 	AspActive
     };
 
+    /**
+     * Method called when the transport status has been changed
+     * @param status Status of the transport causing the notification
+     */
+    virtual void notifyLayer(SignallingInterface::Notification status);
+
 protected:
     /**
      * Constructs an uninitialized User Adaptation client component