Mine

#include <glib.h>
#include <gst/gst.h>

int
main (int   argc,
      char *argv[])
{
  GstElement *bin, *rtpbin, *decoder, *depayloader;
  GMainLoop *loop;
  GstCaps *caps;

  gst_init (&argc, &argv);

  loop = g_main_loop_new(NULL, FALSE);

  bin = gst_pipeline_new("pipe");

  if (!bin) {
      printf("unable to create a pipe.\n");
      exit(1);
  }

  if (argc < 3)
  {
      printf("Usage : g711recv [rtplocalport] [destaddr:port]\n");
      return 0;
  }
  int port = atoi (argv[1]);
  char *addr = argv[2];

  // first we create our rtpbin object
  rtpbin = gst_element_factory_make("rtpbin", "rtpbin");

  if (!rtpbin) {
      printf("unable to create an rtpbin.\n");
      exit(1);
  }

  g_object_set(G_OBJECT(rtpbin), "destinations", addr, NULL);
  g_object_set(G_OBJECT(rtpbin), "rtcp-support", TRUE, NULL);
  g_object_set(G_OBJECT(rtpbin), "localport", port, NULL);


  decoder = gst_element_factory_make("vorbisparse", "vorbisparse");
  depayloader = gst_element_factory_make("rtpvorbisdepay", "rtpvorbisdepay");
  if (!decoder) {
      printf("unable to create a vorbis parser .\n");
      exit(1);
  }
  if (!depayloader) {
      printf("unable to create a rtpvorbisdepay.\n");
      exit(1);
  }
  g_object_set(G_OBJECT(depayloader), "queue-delay", 0, NULL);

  // We need to set the caps ourselves, unless we want mulaw :(
  caps = gst_caps_new_simple ("application/x-rtp",
        "media", G_TYPE_STRING, "audio",
        "payload", G_TYPE_INT, 8,
        "clock-rate", G_TYPE_INT, 8000,
        "encoding-name", G_TYPE_STRING, "PCMA", NULL);

  // add both to the piepline and link them
  gst_bin_add_many (GST_BIN (bin), rtpbin, decoder, depayloader, NULL);
  gst_element_link_pads_filtered (rtpbin, "src%d", depayloader, "sink", caps);
  gst_caps_unref (caps);
  gst_element_link_pads (depayloader, "src", decoder, "sink");

  // our alsasink and link it to the encoder
  GstElement *testsink = gst_element_factory_make("alsasink", "alsasink");
  g_object_set(G_OBJECT(testsink), "sync", FALSE, NULL);
  gst_bin_add_many(GST_BIN(bin), testsink, NULL);
  gst_element_link_pads(decoder, "src", testsink , "sink");

  // let's start playing
  gst_element_set_state (bin, GST_STATE_PLAYING);

  //gst_debug_set_threshold_for_name ("rtpbin", 5);
  //gst_debug_set_threshold_for_name ("rtprecv", 5);
  //gst_debug_set_threshold_for_name ("rtpg711depay", 5);
  //gst_debug_set_threshold_for_name ("basertpdepayload", 5);


  g_main_loop_run(loop);

  return 0;
}