diff --git a/src/transmission.rs b/src/transmission.rs
index 061df4e..91d2cb3 100644
--- a/src/transmission.rs
+++ b/src/transmission.rs
@@ -41,6 +41,27 @@ impl Protocol300Transmission {
             [0x04] => Ok(Self::Eot),
             [0x15] => Ok(Self::Nack),
             [0x16, 0x00, 0x00] => Ok(Self::Init),
+            [0x41, ..] => Ok(Self::Message(Protocol300Message::try_from_bytes(bytes)?)),//TODO fail if too many bytes
+            b => {
+                error!("Failed to parse Protocol300 transmission: invalid byte sequence (length: {}, first byte: 0x{:02X})", 
+                       bytes.len(), 
+                       bytes.first().unwrap_or(&0x00));
+                Err(FromBytesError::InvalidBytes(b.to_owned()))
+            },
+        }
+    }
+
+    /// Try to convert bytes to a Protocol 300 Transmission, but ignores any bytes that are too much
+    /// 
+    /// # Errors
+    /// Returns a `FromBytesError` if the conversion fails in some way
+    pub fn try_from_bytes_incomplete(bytes: &[u8]) -> Result<Self, FromBytesError> {
+        match bytes {
+            [0x06, ..] => Ok(Self::Ack),
+            [0x05, ..] => Ok(Self::Enq),
+            [0x04, ..] => Ok(Self::Eot),
+            [0x15, ..] => Ok(Self::Nack),
+            [0x16, 0x00, 0x00, ..] => Ok(Self::Init),
             [0x41, ..] => Ok(Self::Message(Protocol300Message::try_from_bytes(bytes)?)),
             b => {
                 error!("Failed to parse Protocol300 transmission: invalid byte sequence (length: {}, first byte: 0x{:02X})",