1 files changed, 82 insertions, 0 deletions
diff --git a/gnuradio-examples/python/hier/networking/dial_tone_source.py b/gnuradio-examples/python/hier/networking/dial_tone_source.py
new file mode 100755
index 000000000..4f973ebca
--- /dev/null
+++ b/gnuradio-examples/python/hier/networking/dial_tone_source.py
@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+#
+# Copyright 2006 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+from gnuradio import gr
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+
+class dial_tone_source(gr.hier_block2):
+    def __init__(self, local_ipaddress, remote_ipaddress, port, mtu, sample_rate):
+        gr.hier_block2.__init__(self, 
+                                "dial_tone_source",	# Block type 
+                                gr.io_signature(0,0,0), # Input signature
+                                gr.io_signature(0,0,0)) # Output signature
+
+        amplitude = 0.3
+        self.define_component("src0", gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE,
+                                                       350, amplitude))
+        self.define_component("src1", gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE,
+                                                       440, amplitude))
+        self.define_component("add", gr.add_ff())
+
+	self.define_component("thr", gr.throttle(gr.sizeof_float, sample_rate))
+	self.define_component("dst",  gr.udp_sink(gr.sizeof_float,
+                                                  local_ipaddress, 0,
+                                                  remote_ipaddress, port,
+                                                  mtu))
+        
+        self.connect("src0", 0, "add", 0)	
+        self.connect("src1", 0, "add", 1)
+	self.connect("add", 0, "thr", 0)
+	self.connect("thr", 0, "dst", 0)
+
+if __name__ == '__main__':
+    parser = OptionParser(option_class=eng_option)
+    parser.add_option("", "--local-ipaddr", type="string", default="127.0.0.1",
+                      help="local IP address")
+    parser.add_option("", "--remote-ipaddr", type="string", default="127.0.0.1",
+                      help="Remote IP address")
+    parser.add_option("", "--remote-port", type="int", default=65500,
+                      help="port value to connect to")
+    parser.add_option("", "--mtu", type="int", default=540,
+                     help="packet size.")
+    parser.add_option("-r", "--sample-rate", type="int", default=8000,
+    		     help="audio signal sample rate [default=%default]")
+    (options, args) = parser.parse_args()
+    if len(args) != 0:
+        parser.print_help()
+        raise SystemExit, 1
+
+    # Create an instance of a hierarchical block
+    top_block = dial_tone_source(options.local_ipaddr, options.remote_ipaddr,
+                                 options.remote_port, options.mtu, options.sample_rate)
+    
+    # Create an instance of a runtime, passing it the top block
+    runtime = gr.runtime(top_block)
+    
+    try:    
+        # Run forever
+        runtime.run()
+    except KeyboardInterrupt:
+        # Ctrl-C exits
+        pass
+