diff --git a/server/include/hooks.h b/server/include/hooks.h
index 8ecd449d5..25286ad6d 100644
--- a/server/include/hooks.h
+++ b/server/include/hooks.h
@@ -19,10 +19,9 @@ struct path;
 
 /** Callback type of hook function
  *
- * @todo Add a way to pass custom data to the hooks
- * @param m The message which is forwarded
+ * @param m The last message which has been received
  * @param p The path which is processing this message.
- * @retval 0 Success. Continue processing the message.
+ * @retval 0 Success. Continue processing and forwarding the message.
  * @retval <0 Error. Drop the message.
  */
 typedef int (*hook_cb_t)(struct msg *m, struct path *p);
@@ -66,4 +65,20 @@ int hook_fir(struct msg *m, struct path *p);
 
 #define HOOK_FIR_INDEX	1
 
+/** Example hook: collect previous messages to send them at once */
+int hook_multiplex(struct msg *m, struct path *p);
+
+/** Example hook: inverse multiplex operation */
+int hook_demultiplex(struct msg *m, struct path *p);
+
+#define HOOK_MULTIPLEX_RATIO	10
+
+/* Plausability checks */
+#if HOOK_MULTIPLEX_RATIO > POOL_SIZE
+ #error "POOL_SIZE is too small for given HOOK_MULTIPLEX_RATIO"
+#endif
+
+/** Example hook: Discrete Fourier Transform */
+int hook_dft(struct msg *m, struct path *p);
+
 #endif /* _HOOKS_H_ */
diff --git a/server/src/hooks.c b/server/src/hooks.c
index 72b690915..d92a698bf 100644
--- a/server/src/hooks.c
+++ b/server/src/hooks.c
@@ -27,6 +27,9 @@ static struct hook_id hook_list[] = {
 	{ hook_tofixed, "tofixed" },
 	{ hook_ts, "ts" },
 	{ hook_fir, "fir" },
+	{ hook_dft, "dft"},
+	{ hook_multiplex, "multiplex" },
+	{ hook_demultiplex, "demultiplex" },
 };
 
 hook_cb_t hook_lookup(const char *name)
@@ -47,12 +50,6 @@ int hook_print(struct msg *m, struct path *p)
 	return 0;
 }
 
-int hook_decimate(struct msg *m, struct path *p)
-{
-	/* Drop every HOOK_DECIMATE_RATIO'th message */
-	return (m->sequence % HOOK_DECIMATE_RATIO == 0) ? -1 : 0;
-}
-
 int hook_tofixed(struct msg *m, struct path *p)
 {
 	for (int i=0; i<m->length; i++) {
@@ -98,3 +95,41 @@ int hook_fir(struct msg *m, struct path *p)
 
 	return 0;
 }
+
+int hook_decimate(struct msg *m, struct path *p)
+{
+	/* Drop every HOOK_DECIMATE_RATIO'th message */
+	return (m->sequence % HOOK_DECIMATE_RATIO == 0) ? -1 : 0;
+}
+
+int hook_multiplex(struct msg *m, struct path *p)
+{
+	/* Every HOOK_MULTIPLEX_RATIO'th message contains the collection of the previous ones */
+	if (p->received % HOOK_MULTIPLEX_RATIO == 0) {
+		struct msg *c = p->current; /* Current message */
+
+		for (int i=1; i<HOOK_MULTIPLEX_RATIO && c->length<MSG_VALUES; i++) {
+			struct msg *m = p->history[p->received-i];
+			
+			/* Trim amount of values to actual size of msg buffer */
+			int len = MIN(m->length, MSG_VALUES - c->length);
+			
+			memcpy(c->data + c->length, m->data, len * sizeof(m->data[0]));
+			c->length += len; 
+		}
+		
+		return 0;
+	}
+	else
+		return -1; /* Message will be dropped */
+}
+
+int hook_demultiplex(struct msg *m, struct path *p)
+{
+	
+}
+
+int hook_dft(struct msg *m, struct path *p)
+{
+	/** @todo Implement */
+}
\ No newline at end of file