diff --git a/daemon/face/link-service.cpp b/daemon/face/link-service.cpp
index a382ebe..c6502d7 100644
--- a/daemon/face/link-service.cpp
+++ b/daemon/face/link-service.cpp
@@ -60,6 +60,8 @@
   ++this->nOutInterests;
 
   doSendInterest(interest, endpoint);
+
+  afterSendInterest(interest);
 }
 
 void
@@ -71,6 +73,8 @@
   ++this->nOutData;
 
   doSendData(data, endpoint);
+
+  afterSendData(data);
 }
 
 void
@@ -82,6 +86,8 @@
   ++this->nOutNacks;
 
   doSendNack(nack, endpoint);
+
+  afterSendNack(nack);
 }
 
 void
diff --git a/daemon/face/link-service.hpp b/daemon/face/link-service.hpp
index 415c185..abb3405 100644
--- a/daemon/face/link-service.hpp
+++ b/daemon/face/link-service.hpp
@@ -144,6 +144,18 @@
    */
   signal::Signal<LinkService, Interest> onDroppedInterest;
 
+  /** \brief signals on Interest sent
+   */
+  signal::Signal<LinkService, Interest> afterSendInterest;
+
+  /** \brief signals on Data sent
+   */
+  signal::Signal<LinkService, Data> afterSendData;
+
+  /** \brief signals on Nack sent
+   */
+  signal::Signal<LinkService, lp::Nack> afterSendNack;
+
 public: // lower interface to be invoked by Transport
   /** \brief performs LinkService specific operations to receive a lower-layer packet
    */