diff --git a/beacon_node/libp2p/src/behaviour.rs b/beacon_node/libp2p/src/behaviour.rs
index 604b84c8f..f0a89027b 100644
--- a/beacon_node/libp2p/src/behaviour.rs
+++ b/beacon_node/libp2p/src/behaviour.rs
@@ -72,14 +72,16 @@ impl<TSubstream: AsyncRead + AsyncWrite> Behaviour<TSubstream> {
     }
 }
 
+/// Implements the combined behaviour for the libp2p service.
 impl<TSubstream: AsyncRead + AsyncWrite> Behaviour<TSubstream> {
+    /// Subscribes to a gossipsub topic.
     pub fn subscribe(&mut self, topic: Topic) -> bool {
         self.gossipsub.subscribe(topic)
     }
 
-    pub fn send_message(&self, message: String) {
-        // TODO: Encode and send via gossipsub
-
+    /// Sends an RPC Request/Response via the RPC protocol.
+    pub fn send_rpc(&mut self, peer_id: PeerId, rpc_event: RPCEvent) {
+        self.serenity_rpc.send_rpc(peer_id, rpc_event);
     }
 }
 
diff --git a/beacon_node/libp2p/src/rpc/mod.rs b/beacon_node/libp2p/src/rpc/mod.rs
index d40e53935..907e95763 100644
--- a/beacon_node/libp2p/src/rpc/mod.rs
+++ b/beacon_node/libp2p/src/rpc/mod.rs
@@ -13,7 +13,7 @@ use libp2p::core::swarm::{
 use libp2p::{Multiaddr, PeerId};
 pub use methods::{HelloMessage, RPCMethod, RPCRequest, RPCResponse};
 pub use protocol::{RPCEvent, RPCProtocol};
-use slog::{debug, o, Logger};
+use slog::{debug, o};
 use std::marker::PhantomData;
 use tokio::io::{AsyncRead, AsyncWrite};
 
@@ -40,15 +40,10 @@ impl<TSubstream> Rpc<TSubstream> {
     }
 
     /// Submits and RPC request.
-    pub fn send_request(&mut self, peer_id: PeerId, id: u64, method_id: u16, body: RPCRequest) {
-        let request = RPCEvent::Request {
-            id,
-            method_id,
-            body,
-        };
+    pub fn send_rpc(&mut self, peer_id: PeerId, rpc_event: RPCEvent) {
         self.events.push(NetworkBehaviourAction::SendEvent {
             peer_id,
-            event: request,
+            event: rpc_event,
         });
     }
 }
diff --git a/beacon_node/network/src/service.rs b/beacon_node/network/src/service.rs
index 7ad3bdb3e..4cb1038d1 100644
--- a/beacon_node/network/src/service.rs
+++ b/beacon_node/network/src/service.rs
@@ -7,9 +7,10 @@ use crossbeam_channel::{unbounded as channel, Sender, TryRecvError};
 use futures::prelude::*;
 use futures::sync::oneshot;
 use futures::Stream;
+use libp2p::RPCEvent;
 use libp2p::Service as LibP2PService;
 use libp2p::{Libp2pEvent, PeerId};
-use slog::{debug, info, o};
+use slog::{debug, info, o, trace};
 use std::sync::Arc;
 use tokio::runtime::TaskExecutor;
 
@@ -63,8 +64,10 @@ impl Service {
     // TODO: Testing only
     pub fn send_message(&self, message: String) {
         let node_message = NodeMessage::Message(message);
-        self.network_send
-            .send(NetworkMessage::Send(PeerId::random(), node_message));
+        self.network_send.send(NetworkMessage::Send(
+            PeerId::random(),
+            OutgoingMessage::NotifierTest,
+        ));
     }
 }
 
@@ -113,13 +116,13 @@ fn network_service(
                     );
                     message_handler_send
                         .send(HandlerMessage::RPC(rpc_event))
-                        .map_err(|_| "failed to send rpc to handler");
+                        .map_err(|_| "failed to send rpc to handler")?;
                 }
                 Ok(Async::Ready(Some(Libp2pEvent::PeerDialed(peer_id)))) => {
                     debug!(libp2p_service.log, "Peer Dialed: {:?}", peer_id);
                     message_handler_send
                         .send(HandlerMessage::PeerDialed(peer_id))
-                        .map_err(|_| "failed to send rpc to handler");
+                        .map_err(|_| "failed to send rpc to handler")?;
                 }
                 Ok(Async::Ready(Some(Libp2pEvent::Message(m)))) => debug!(
                     libp2p_service.log,
@@ -133,24 +136,23 @@ fn network_service(
         loop {
             match network_recv.try_recv() {
                 // TODO: Testing message - remove
-                Ok(NetworkMessage::Send(_peer_id, node_message)) => {
-                    match node_message {
-                        NodeMessage::Message(m) => {
-                            debug!(log, "Message received via network channel: {:?}", m);
+                Ok(NetworkMessage::Send(peer_id, outgoing_message)) => {
+                    match outgoing_message {
+                        OutgoingMessage::RPC(rpc_event) => {
+                            trace!(log, "Sending RPC Event: {:?}", rpc_event);
                             //TODO: Make swarm private
                             //TODO: Implement correct peer id topic message handling
-                            libp2p_service.swarm.send_message(m);
+                            libp2p_service.swarm.send_rpc(peer_id, rpc_event);
+                        }
+                        OutgoingMessage::NotifierTest => {
+                            debug!(log, "Received message from notifier");
                         }
-                        //TODO: Handle all NodeMessage types
-                        _ => break,
                     };
                 }
                 Err(TryRecvError::Empty) => break,
                 Err(TryRecvError::Disconnected) => {
                     return Err(libp2p::error::Error::from("Network channel disconnected"));
                 }
-                // TODO: Implement all NetworkMessage
-                _ => break,
             }
         }
         Ok(Async::NotReady)
@@ -162,5 +164,14 @@ fn network_service(
 pub enum NetworkMessage {
     /// Send a message to libp2p service.
     //TODO: Define typing for messages across the wire
-    Send(PeerId, NodeMessage),
+    Send(PeerId, OutgoingMessage),
+}
+
+/// Type of outgoing messages that can be sent through the network service.
+#[derive(Debug, Clone)]
+pub enum OutgoingMessage {
+    /// Send an RPC request/response.
+    RPC(RPCEvent),
+    //TODO: Remove
+    NotifierTest,
 }