refactored

transceiver.py

@@ -1,14 +1,21 @@
 from a_transceiver import ATransceiver
 from msg.container import MsgContainer
 from msg.talker import MsgTalker
+from a_backend import ABackend
 
 
 class Transceiver(ATransceiver, MsgTalker):
 	def __init__(self, name: str):
 		ATransceiver.__init__(self, name)
 		MsgTalker.__init__(self)
+		self.backend = None
 
 	def on_recv(self, msg: MsgContainer):
 		msg.transceiver = self
 		self.call_listener(msg)
 
+	def on_register(self, backend: ABackend):
+		self.backend = backend
+
+	def send(self, data: bytes):
+		self.backend.send(self, data)