diff --git a/debian/control b/debian/control
index 9911f03..fe6c6bf 100644
--- a/debian/control
+++ b/debian/control
@@ -8,6 +8,7 @@ Build-Depends:
  libgtk-3-dev,
  modemmanager-dev,
  libmm-glib-dev,
+ libgsound-dev,
  meson,
  pkg-config,
 # to run the tests
diff --git a/src/calls-application.c b/src/calls-application.c
index da9df6e..594eb7f 100644
--- a/src/calls-application.c
+++ b/src/calls-application.c
@@ -37,6 +37,7 @@
 #include "calls-new-call-box.h"
 #include "calls-encryption-indicator.h"
 #include "calls-mm-provider.h"
+#include "calls-ringer.h"
 #include "calls-call-window.h"
 #include "calls-main-window.h"
 #include "calls-application.h"
@@ -53,6 +54,7 @@ struct _CallsApplication
   GtkApplication parent_instance;
 
   CallsProvider *provider;
+  CallsRinger   *ringer;
 };
 
 G_DEFINE_TYPE (CallsApplication, calls_application, GTK_TYPE_APPLICATION)
@@ -63,6 +65,7 @@ dispose (GObject *object)
 {
   CallsApplication *self = (CallsApplication *)object;
 
+  g_clear_object (&self->ringer);
   g_clear_object (&self->provider);
 
   G_OBJECT_CLASS (calls_application_parent_class)->finalize (object);
@@ -76,11 +79,14 @@ startup (GApplication *application)
 
   G_APPLICATION_CLASS (calls_application_parent_class)->startup (application);
 
+  g_set_prgname (APP_ID);
+  g_set_application_name (_("Calls"));
+
   self->provider = CALLS_PROVIDER (calls_mm_provider_new ());
   g_assert (self->provider != NULL);
 
-  g_set_prgname (APP_ID);
-  g_set_application_name (_("Calls"));
+  self->ringer = calls_ringer_new (self->provider);
+  g_assert (self->ringer != NULL);
 }
 
 static void
diff --git a/src/calls-ringer.c b/src/calls-ringer.c
new file mode 100644
index 0000000..2263830
--- /dev/null
+++ b/src/calls-ringer.c
@@ -0,0 +1,370 @@
+/*
+ * Copyright (C) 2018 Purism SPC
+ *
+ * This file is part of Calls.
+ *
+ * Calls 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Calls 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 Calls.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Bob Ham <bob.ham@puri.sm>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#include "calls-ringer.h"
+#include "calls-enumerate.h"
+#include "config.h"
+
+#include <gsound.h>
+#include <glib/gi18n.h>
+#include <glib-object.h>
+
+
+struct _CallsRinger
+{
+  GtkApplicationWindow parent_instance;
+
+  CallsProvider *provider;
+  GSoundContext *ctx;
+  unsigned       ring_count;
+  GCancellable  *playing;
+};
+
+G_DEFINE_TYPE (CallsRinger, calls_ringer, G_TYPE_OBJECT);
+
+enum {
+  PROP_0,
+  PROP_PROVIDER,
+  PROP_LAST_PROP,
+};
+static GParamSpec *props[PROP_LAST_PROP];
+
+
+static void
+ringer_error (CallsRinger *self,
+              const gchar *prefix,
+              GError      *error)
+{
+  g_warning ("%s: %s", prefix, error->message);
+  g_error_free (error);
+
+  g_clear_object (&self->ctx);
+}
+
+
+static gboolean
+create_ctx (CallsRinger *self)
+{
+  GError *error = NULL;
+  gboolean ok;
+
+  self->ctx = gsound_context_new (NULL, &error);
+  if (!self->ctx)
+    {
+      ringer_error (self, "Error creating GSound context", error);
+      return FALSE;
+    }
+
+  ok = gsound_context_set_attributes
+    (self->ctx,
+     &error,
+     GSOUND_ATTR_APPLICATION_ICON_NAME, APP_ID,
+     NULL);
+  if (!ok)
+    {
+      ringer_error (self, "Error setting GSound attributes", error);
+      return FALSE;
+    }
+
+  g_debug ("Created ringtone context");
+
+  return TRUE;
+}
+
+
+static void play (CallsRinger *self);
+
+
+static void
+play_cb (GSoundContext *ctx,
+         GAsyncResult  *res,
+         CallsRinger   *self)
+{
+  gboolean ok;
+  GError *error = NULL;
+
+  ok = gsound_context_play_full_finish (ctx, res, &error);
+  if (!ok)
+    {
+      g_clear_object (&self->playing);
+
+      if (error->domain == G_IO_ERROR
+          && error->code == G_IO_ERROR_CANCELLED)
+        {
+          g_debug ("Ringtone cancelled");
+        }
+      else
+        {
+          ringer_error (self, "Error playing ringtone", error);
+        }
+
+      return;
+    }
+
+  g_assert (self->ring_count > 0);
+  play (self);
+}
+
+
+static void
+play (CallsRinger *self)
+{
+  g_assert (self->ctx     != NULL);
+  g_assert (self->playing != NULL);
+
+  g_debug ("Playing ringtone");
+  gsound_context_play_full (self->ctx,
+                            self->playing,
+                            (GAsyncReadyCallback)play_cb,
+                            self,
+                            GSOUND_ATTR_MEDIA_ROLE, "event",
+                            GSOUND_ATTR_EVENT_ID, "phone-incoming-call",
+                            GSOUND_ATTR_EVENT_DESCRIPTION, _("Incoming call"),
+                            NULL);
+}
+
+
+static void
+start (CallsRinger *self)
+{
+  g_assert (self->playing == NULL);
+
+  if (!self->ctx)
+    {
+      gboolean ok;
+
+      ok = create_ctx (self);
+      if (!ok)
+        {
+          return;
+        }
+    }
+
+  g_debug ("Starting ringtone");
+  self->playing = g_cancellable_new ();
+  play (self);
+}
+
+
+static void
+stop (CallsRinger *self)
+{
+  g_debug ("Stopping ringtone");
+
+  g_assert (self->ctx != NULL);
+
+  g_cancellable_cancel (self->playing);
+}
+
+
+static void
+update_ring (CallsRinger *self)
+{
+  if (!self->playing)
+    {
+      if (self->ring_count > 0)
+        {
+          g_debug ("Starting ringer");
+          start (self);
+        }
+    }
+  else
+    {
+      if (self->ring_count == 0)
+        {
+          g_debug ("Stopping ringer");
+          stop (self);
+        }
+    }
+}
+
+
+static inline gboolean
+is_ring_state (CallsCallState state)
+{
+  switch (state)
+    {
+    case CALLS_CALL_STATE_INCOMING:
+    case CALLS_CALL_STATE_WAITING:
+      return TRUE;
+    default:
+      return FALSE;
+    }
+}
+
+
+static void
+state_changed_cb (CallsRinger   *self,
+                  CallsCallState new_state,
+                  CallsCallState old_state)
+{
+  gboolean old_is_ring;
+
+  g_return_if_fail (old_state != new_state);
+
+  old_is_ring = is_ring_state (old_state);
+  if (old_is_ring == is_ring_state (new_state))
+    {
+      // No change in ring state
+      return;
+    }
+
+  if (old_is_ring)
+    {
+      --self->ring_count;
+    }
+  else
+    {
+      ++self->ring_count;
+    }
+
+  update_ring (self);
+}
+
+
+static void
+update_count (CallsRinger    *self,
+              CallsCall      *call,
+              short           delta)
+{
+  if (is_ring_state (calls_call_get_state (call)))
+    {
+      self->ring_count += delta;
+    }
+
+  update_ring (self);
+}
+
+
+static void
+call_added_cb (CallsRinger *self, CallsCall *call)
+{
+  update_count (self, call, +1);
+}
+
+
+static void
+call_removed_cb (CallsRinger *self, CallsCall *call, const gchar *reason)
+{
+  update_count (self, call, -1);
+}
+
+
+static void
+calls_ringer_init (CallsRinger *self)
+{
+}
+
+
+static void
+set_property (GObject      *object,
+              guint         property_id,
+              const GValue *value,
+              GParamSpec   *pspec)
+{
+  CallsRinger *self = CALLS_RINGER (object);
+
+  switch (property_id) {
+  case PROP_PROVIDER:
+    g_set_object (&self->provider, CALLS_PROVIDER (g_value_get_object (value)));
+    break;
+
+  default:
+    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    break;
+  }
+}
+
+
+static void
+set_up_provider (CallsRinger *self)
+{
+  CallsEnumerateParams *params;
+
+  params = calls_enumerate_params_new (self);
+
+  calls_enumerate_params_add
+    (params, CALLS_TYPE_ORIGIN, "call-added", G_CALLBACK (call_added_cb));
+  calls_enumerate_params_add
+    (params, CALLS_TYPE_ORIGIN, "call-removed", G_CALLBACK (call_removed_cb));
+
+  calls_enumerate_params_add
+    (params, CALLS_TYPE_CALL, "state-changed", G_CALLBACK (state_changed_cb));
+
+  calls_enumerate (self->provider, params);
+
+  g_object_unref (params);
+}
+
+static void
+constructed (GObject *object)
+{
+  GObjectClass *parent_class = g_type_class_peek (G_TYPE_OBJECT);
+  CallsRinger *self = CALLS_RINGER (object);
+
+  create_ctx (self);
+  set_up_provider (self);
+
+  parent_class->constructed (object);
+}
+
+
+static void
+dispose (GObject *object)
+{
+  GObjectClass *parent_class = g_type_class_peek (G_TYPE_OBJECT);
+  CallsRinger *self = CALLS_RINGER (object);
+
+  g_clear_object (&self->provider);
+
+  parent_class->dispose (object);
+}
+
+
+static void
+calls_ringer_class_init (CallsRingerClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->set_property = set_property;
+  object_class->constructed = constructed;
+  object_class->dispose = dispose;
+
+  props[PROP_PROVIDER] =
+    g_param_spec_object ("provider",
+                         _("Provider"),
+                         _("An object implementing low-level call-making functionality"),
+                         CALLS_TYPE_PROVIDER,
+                         G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY);
+
+  g_object_class_install_properties (object_class, PROP_LAST_PROP, props);
+}
+
+CallsRinger *
+calls_ringer_new (CallsProvider *provider)
+{
+  return g_object_new (CALLS_TYPE_RINGER,
+                       "provider", provider,
+                       NULL);
+}
diff --git a/src/calls-ringer.h b/src/calls-ringer.h
new file mode 100644
index 0000000..d18e071
--- /dev/null
+++ b/src/calls-ringer.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2018 Purism SPC
+ *
+ * This file is part of Calls.
+ *
+ * Calls 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Calls 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 Calls.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Bob Ham <bob.ham@puri.sm>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#ifndef CALLS_RINGER_H__
+#define CALLS_RINGER_H__
+
+#include "calls-provider.h"
+
+G_BEGIN_DECLS
+
+#define CALLS_TYPE_RINGER (calls_ringer_get_type ())
+
+G_DECLARE_FINAL_TYPE (CallsRinger, calls_ringer, CALLS, RINGER, GObject);
+
+CallsRinger *calls_ringer_new (CallsProvider *provider);
+
+G_END_DECLS
+
+#endif /* CALLS_RINGER_H__ */
diff --git a/src/meson.build b/src/meson.build
index a5b783d..63cdb2e 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -28,6 +28,7 @@ calls_deps = [ dependency('gobject-2.0'),
                dependency('libhandy-0.0'),
                dependency('ModemManager'),
                dependency('mm-glib'),
+               dependency('gsound'),
              ]
 
 calls_sources = files(['calls-message-source.c', 'calls-message-source.h',
@@ -54,6 +55,7 @@ calls_sources = files(['calls-message-source.c', 'calls-message-source.h',
                        'calls-new-call-box.c', 'calls-new-call-box.h',
                        'calls-new-call-header-bar.c', 'calls-new-call-header-bar.h',
                        'calls-main-window.c', 'calls-main-window.h',
+                       'calls-ringer.c', 'calls-ringer.h',
                        'calls-application.c', 'calls-application.h',
                        'util.c', 'util.h',
                       ])