diff --git a/apps/grgsm_livemon b/apps/grgsm_livemon
index b77acbb..389e2a0 100755
--- a/apps/grgsm_livemon
+++ b/apps/grgsm_livemon
@@ -58,7 +58,7 @@
 
 class grgsm_livemon(gr.top_block, Qt.QWidget):
 
-    def __init__(self, args="", gain=30, osr=4, ppm=0, samp_rate=2000000.052982, shiftoff=400e3, fc=941.8e6):
+    def __init__(self, args="", fc=941.8e6, gain=30, osr=4, ppm=0, samp_rate=2000000.052982, shiftoff=400e3, collector="localhost", collectorport="4729"):
         gr.top_block.__init__(self, "Gr-gsm Livemon")
         Qt.QWidget.__init__(self)
         self.setWindowTitle("Gr-gsm Livemon")
@@ -85,12 +85,14 @@
         # Parameters
         ##################################################
         self.args = args
+        self.fc = fc
         self.gain = gain
         self.osr = osr
         self.ppm = ppm
         self.samp_rate = samp_rate
         self.shiftoff = shiftoff
-        self.fc = fc
+        self.collector = collector
+        self.collectorport = collectorport
 
         ##################################################
         # Variables
@@ -185,7 +187,7 @@
             timeslot_nr=0,
         )
         self.blocks_socket_pdu_0_0 = blocks.socket_pdu("UDP_SERVER", "127.0.0.1", "4729", 10000, False)
-        self.blocks_socket_pdu_0 = blocks.socket_pdu("UDP_CLIENT", "127.0.0.1", "4729", 10000, False)
+        self.blocks_socket_pdu_0 = blocks.socket_pdu("UDP_CLIENT", collector, collectorport, 1500, False)
         self.blocks_rotator_cc_0 = blocks.rotator_cc(-2*pi*shiftoff/samp_rate)
 
         ##################################################
@@ -219,6 +221,14 @@
     def set_args(self, args):
         self.args = args
 
+    def get_fc(self):
+        return self.fc
+
+    def set_fc(self, fc):
+        self.fc = fc
+        self.set_fc_slider(self.fc)
+        self.gsm_input_0.set_fc(self.fc)
+
     def get_gain(self):
         return self.gain
 
@@ -259,13 +269,17 @@
         self.rtlsdr_source_0.set_center_freq(self.fc_slider-self.shiftoff, 0)
         self.rtlsdr_source_0.set_bandwidth(250e3+abs(self.shiftoff), 0)
 
-    def get_fc(self):
-        return self.fc
+    def get_collector(self):
+        return self.collector
 
-    def set_fc(self, fc):
-        self.fc = fc
-        self.set_fc_slider(self.fc)
-        self.gsm_input_0.set_fc(self.fc)
+    def set_collector(self, collector):
+        self.collector = collector
+
+    def get_collectorport(self):
+        return self.collectorport
+
+    def set_collectorport(self, collectorport):
+        self.collectorport = collectorport
 
     def get_ppm_slider(self):
         return self.ppm_slider
@@ -296,6 +310,9 @@
         "", "--args", dest="args", type="string", default="",
         help="Set Device Arguments [default=%default]")
     parser.add_option(
+        "-f", "--fc", dest="fc", type="eng_float", default=eng_notation.num_to_str(941.8e6),
+        help="Set GSM channel's central frequency [default=%default]")
+    parser.add_option(
         "-g", "--gain", dest="gain", type="eng_float", default=eng_notation.num_to_str(30),
         help="Set gain [default=%default]")
     parser.add_option(
@@ -311,8 +328,11 @@
         "-o", "--shiftoff", dest="shiftoff", type="eng_float", default=eng_notation.num_to_str(400e3),
         help="Set Frequency Shiftoff [default=%default]")
     parser.add_option(
-        "-f", "--fc", dest="fc", type="eng_float", default=eng_notation.num_to_str(941.8e6),
-        help="Set GSM channel's central frequency [default=%default]")
+        "", "--collector", dest="collector", type="string", default="localhost",
+        help="Set IP or DNS name of collector point [default=%default]")
+    parser.add_option(
+        "", "--collectorport", dest="collectorport", type="string", default="4729",
+        help="Set UDP port number of collector [default=%default]")
     return parser
 
 
@@ -326,7 +346,7 @@
         Qt.QApplication.setGraphicsSystem(style)
     qapp = Qt.QApplication(sys.argv)
 
-    tb = top_block_cls(args=options.args, gain=options.gain, osr=options.osr, ppm=options.ppm, samp_rate=options.samp_rate, shiftoff=options.shiftoff, fc=options.fc)
+    tb = top_block_cls(args=options.args, fc=options.fc, gain=options.gain, osr=options.osr, ppm=options.ppm, samp_rate=options.samp_rate, shiftoff=options.shiftoff, collector=options.collector, collectorport=options.collectorport)
     tb.start()
     tb.show()