diff --git a/configreader.py b/configreader.py
index f0780fc..7852f41 100644
--- a/configreader.py
+++ b/configreader.py
@@ -58,6 +58,13 @@ class ConfigurationReader(object):
 		print 'shortcuts:', shortcuts
 		return shortcuts
 
+	def __read_blacklist(self):
+		fname = self.__get_global_val('blacklist_file')
+		blacklist = []
+		with open(fname, 'r') as csvfile:
+			for row in csv.DictReader(csvfile):
+				blacklist.append(row['number'])
+		return blacklist
 
 	def read(self, f):
 		self.__cp.read(f)
@@ -78,6 +85,7 @@ class ConfigurationReader(object):
 		self.__dialconfig = fetapdtest.DialConfiguration(
 			self.__get_global_val_int('dial_timeout'),
 			self.__read_shortcuts(),
+			self.__read_blacklist(),
 		)
 
 		proxyconfigs = []
diff --git a/fetap.ini.example b/fetap.ini.example
index 17a9dd7..4a9cfab 100644
--- a/fetap.ini.example
+++ b/fetap.ini.example
@@ -18,7 +18,11 @@ incoming_timeout = 60
 ; gewaehlte nummer angerufen wird
 dial_timeout = 3
 
+; CSV-Datei mit Kurzwahlen in der Form
+; Header: shortcut,number
 shortcuts_file = shortcuts.csv
+; CSV-Datei mit Rufnummern die automatisch abgelehnt werden sollen
+; Header: number
 linphone_config = linphone.conf
 
 ; Einer der Namen der unten eingetragenen Proxys
diff --git a/fetapdtest.py b/fetapdtest.py
index 924fe37..5df43a3 100644
--- a/fetapdtest.py
+++ b/fetapdtest.py
@@ -7,9 +7,10 @@ import configreader
 
 
 class DialConfiguration(object):
-	def __init__(self, dial_timeout, shortcuts):
+	def __init__(self, dial_timeout, shortcuts, blacklist):
 		self.dial_timeout = dial_timeout
 		self.shortcuts = shortcuts
+                self.blacklist = blacklist
 
 class IllegalEventError(Exception):
 	pass
@@ -117,7 +118,14 @@ class RegisteringState(BaseState):
 class IdleState(BaseState):
 	def on_incoming_call(self):
 		print('incomfing call')
-		return SchelltState
+                caller = self._controller.phone.get_remote_number()
+                print('From: %s' % caller)
+                if caller in self._controller.dialconfig.blacklist:
+                    print('Caller on blacklist - declining')
+                    self._controller.phone.decline_call()
+                    return CallTerminatingState
+                else:
+                    return SchelltState
 	
 	def on_gabelschalter_up(self):
 		print('gabel up')
diff --git a/phoneinterface.py b/phoneinterface.py
index 9582b2a..c4473c0 100644
--- a/phoneinterface.py
+++ b/phoneinterface.py
@@ -199,6 +199,9 @@ class PhoneInterface(object):
         self.__ttsproc.stdin.write(text + '\n')
         self.__ttsproc.stdin.flush()
 
+    def get_remote_number(self):
+        return self.__core.current_call_remote_address.username
+
 if __name__ == '__main__':
     def event_cb(evt):
         print 'Got event:', PhoneEvent.string(evt)