diff --git a/src/idnode.c b/src/idnode.c
index 6c3b8481..b0b3ab8a 100644
--- a/src/idnode.c
+++ b/src/idnode.c
@@ -152,6 +152,10 @@ idnode_insert(idnode_t *in, const char *uuid, const idclass_t *class)
     fprintf(stderr, "Id node collision\n");
     abort();
   }
+
+  /* Fire event */
+  idnode_notify(in, NULL, 0, 1);
+
   return 0;
 }
 
@@ -163,7 +167,7 @@ idnode_unlink(idnode_t *in)
 {
   lock_assert(&global_lock);
   RB_REMOVE(&idnodes, in, in_link);
-  idnode_updated(in);
+  idnode_notify(in, NULL, 0, 1);
 }
 
 /* **************************************************************************
@@ -590,7 +594,7 @@ idnode_write0 ( idnode_t *self, htsmsg_t *c, int optmask, int dosave )
   }
   if (save && dosave) {
     if (savefn) savefn(self);
-    idnode_notify(self, NULL, 0);
+    idnode_notify(self, NULL, 0, 0);
   }
   return save;
 }
@@ -715,12 +719,31 @@ idnode_serialize0(idnode_t *self, int optmask)
  * Notifcation
  * *************************************************************************/
 
+/**
+ * Update internal event pipes
+ */
+static void
+idnode_notify_event ( idnode_t *in )
+{
+  const idclass_t *ic = in->in_class;
+  const char *uuid = idnode_uuid_as_str(in);
+  while (ic) {
+    if (ic->ic_event) {
+      htsmsg_t *m = htsmsg_create_map();
+      htsmsg_add_str(m, "uuid", uuid);
+      printf("event = %s\n", ic->ic_event);
+      notify_by_msg(ic->ic_event, m);
+    }
+    ic = ic->ic_super;
+  }
+}
+
 /**
  * Notify on a given channel
  */
 void
 idnode_notify
-  (idnode_t *in, const char *chn, int force)
+  (idnode_t *in, const char *chn, int force, int event)
 {
   const char *uuid = idnode_uuid_as_str(in);
 
@@ -739,12 +762,16 @@ idnode_notify
     pthread_cond_signal(&idnode_cond);
     pthread_mutex_unlock(&idnode_mutex);
   }
+
+  /* Send event */
+  if (event)
+    idnode_notify_event(in);
 }
 
 void
 idnode_notify_simple (void *in)
 {
-  idnode_notify(in, NULL, 0);
+  idnode_notify(in, NULL, 0, 0);
 }
 
 void
@@ -754,6 +781,7 @@ idnode_notify_title_changed (void *in)
   htsmsg_add_str(m, "uuid", idnode_uuid_as_str(in));
   htsmsg_add_str(m, "text", idnode_get_title(in));
   notify_by_msg("idnodeUpdated", m);
+  idnode_notify_event(in);
 }
 
 /*
diff --git a/src/idnode.h b/src/idnode.h
index 27df9925..2eee4409 100644
--- a/src/idnode.h
+++ b/src/idnode.h
@@ -46,6 +46,7 @@ typedef struct idclass {
   const char            *ic_class;      /// Class name
   const char            *ic_caption;    /// Class description
   const property_t      *ic_properties; /// Property list
+  const char            *ic_event;      /// Events to fire on add/delete/title
 
   /* Callbacks */
   idnode_set_t   *(*ic_get_childs)(idnode_t *self);
@@ -116,9 +117,9 @@ int           idnode_is_instance  (idnode_t *in, const idclass_t *idc);
 void         *idnode_find    (const char *uuid, const idclass_t *idc);
 idnode_set_t *idnode_find_all(const idclass_t *idc);
 
-#define idnode_updated(in) idnode_notify(in, NULL, 0)
+#define idnode_updated(in) idnode_notify(in, NULL, 0, 0)
 void idnode_notify
-  (idnode_t *in, const char *chn, int force);
+  (idnode_t *in, const char *chn, int force, int event);
 void idnode_notify_simple (void *in);
 void idnode_notify_title_changed (void *in);
 
diff --git a/src/input/mpegts.h b/src/input/mpegts.h
index 98ccac89..116c3af3 100644
--- a/src/input/mpegts.h
+++ b/src/input/mpegts.h
@@ -410,6 +410,7 @@ struct mpegts_input
   void (*mi_stopped_mux)    (mpegts_input_t*,mpegts_mux_instance_t*);
   int  (*mi_has_subscription) (mpegts_input_t*, mpegts_mux_t *mm);
   int  (*mi_grace_period)   (mpegts_input_t*, mpegts_mux_t *mm);
+  idnode_set_t *(*mi_network_list) (mpegts_input_t*);
 };
 
 /* ****************************************************************************
@@ -445,6 +446,8 @@ mpegts_input_t *mpegts_input_create0
   mpegts_input_create0(calloc(1, sizeof(mpegts_input_t)),\
                        &mpegts_input_class, u, c)
 
+#define mpegts_input_find(u) idnode_find(u, &mpegts_input_class);
+
 void mpegts_input_set_network ( mpegts_input_t *mi, mpegts_network_t *mn );
 
 void mpegts_input_open_service ( mpegts_input_t *mi, mpegts_service_t *s, int init );
diff --git a/src/input/mpegts/linuxdvb/linuxdvb_frontend.c b/src/input/mpegts/linuxdvb/linuxdvb_frontend.c
index bc05fae5..b2f7dd3a 100644
--- a/src/input/mpegts/linuxdvb/linuxdvb_frontend.c
+++ b/src/input/mpegts/linuxdvb/linuxdvb_frontend.c
@@ -92,22 +92,15 @@ linuxdvb_frontend_class_network_set(void *o, const void *v)
 static htsmsg_t *
 linuxdvb_frontend_class_network_enum(void *o)
 {
-  extern const idclass_t linuxdvb_network_class;
-  int i;
-  linuxdvb_frontend_t *lfe = o;
-  linuxdvb_network_t *ln;
-  htsmsg_t *m = htsmsg_create_list();
-  idnode_set_t *is = idnode_find_all(&linuxdvb_network_class);
-  for (i = 0; i < is->is_count; i++) {
-    ln = (linuxdvb_network_t*)is->is_array[i];
-    if (ln->ln_type == lfe->lfe_info.type) {
-      htsmsg_t *e = htsmsg_create_map();
-      htsmsg_add_str(e, "key", idnode_uuid_as_str(&ln->mn_id));
-      htsmsg_add_str(e, "val", ln->mn_network_name);
-      htsmsg_add_msg(m, NULL, e);
-    }
-  }
-  idnode_set_free(is);
+  htsmsg_t *m = htsmsg_create_map();
+  htsmsg_t *p = htsmsg_create_map();
+  htsmsg_add_str(m, "type",  "api");
+  htsmsg_add_str(m, "uri",   "mpegts/input");
+  htsmsg_add_str(p, "op",    "network_list");
+  htsmsg_add_str(p, "uuid",  idnode_uuid_as_str((idnode_t*)o));
+  htsmsg_add_str(m, "event", "mpegts_network");
+  htsmsg_add_msg(m, "params", p);
+
   return m;
 }
 
@@ -368,6 +361,30 @@ exit:
   mpegts_input_close_service(mi, s);
 }
 
+static idnode_set_t *
+linuxdvb_frontend_network_list ( mpegts_input_t *mi )
+{
+  linuxdvb_frontend_t *lfe = (linuxdvb_frontend_t*)mi;
+  const idclass_t     *idc;
+  extern const idclass_t linuxdvb_network_dvbt_class;
+  extern const idclass_t linuxdvb_network_dvbc_class;
+  extern const idclass_t linuxdvb_network_dvbs_class;
+  extern const idclass_t linuxdvb_network_atsc_class;
+
+  if (lfe->lfe_info.type == FE_OFDM)
+    idc = &linuxdvb_network_dvbt_class;
+  else if (lfe->lfe_info.type == FE_QAM)
+    idc = &linuxdvb_network_dvbc_class;
+  else if (lfe->lfe_info.type == FE_QPSK)
+    idc = &linuxdvb_network_dvbs_class;
+  else if (lfe->lfe_info.type == FE_ATSC)
+    idc = &linuxdvb_network_atsc_class;
+  else
+    return NULL;
+
+  return idnode_find_all(idc);
+}
+
 /* **************************************************************************
  * Data processing
  * *************************************************************************/
@@ -829,6 +846,7 @@ linuxdvb_frontend_create0
   lfe->mi_stop_mux       = linuxdvb_frontend_stop_mux;
   lfe->mi_open_service   = linuxdvb_frontend_open_service;
   lfe->mi_close_service  = linuxdvb_frontend_close_service;
+  lfe->mi_network_list   = linuxdvb_frontend_network_list;
   lfe->lfe_open_pid      = linuxdvb_frontend_open_pid;
 
   /* Adapter link */
diff --git a/src/input/mpegts/linuxdvb/linuxdvb_satconf.c b/src/input/mpegts/linuxdvb/linuxdvb_satconf.c
index 14d3282d..637d5115 100644
--- a/src/input/mpegts/linuxdvb/linuxdvb_satconf.c
+++ b/src/input/mpegts/linuxdvb/linuxdvb_satconf.c
@@ -564,9 +564,6 @@ linuxdvb_satconf_create0
   if (!ls->ls_lnb)
     ls->ls_lnb = linuxdvb_lnb_create0(NULL, NULL, ls);
 
-  /* Notification */
-  idnode_notify(&ls->mi_id, "linuxdvb_satconf", 0);
-
   return ls;
 }
 
diff --git a/src/input/mpegts/mpegts_mux.c b/src/input/mpegts/mpegts_mux.c
index 27ae9bda..47e9f054 100644
--- a/src/input/mpegts/mpegts_mux.c
+++ b/src/input/mpegts/mpegts_mux.c
@@ -163,6 +163,7 @@ const idclass_t mpegts_mux_class =
 {
   .ic_class      = "mpegts_mux",
   .ic_caption    = "MPEGTS Multiplex",
+  .ic_event      = "mpegts_mux",
   .ic_save       = mpegts_mux_class_save,
   .ic_properties = (const property_t[]){
     {
@@ -556,10 +557,6 @@ mpegts_mux_create0
   mm->mm_display_name(mm, buf, sizeof(buf));
   tvhtrace("mpegts", "%s - created", buf);
 
-  /* Notification */
-  idnode_notify(&mm->mm_id, "mpegts_mux", 0);
-  idnode_updated(&mn->mn_id);
-
   return mm;
 }
 
diff --git a/src/input/mpegts/mpegts_network.c b/src/input/mpegts/mpegts_network.c
index e49feb6c..d54da922 100644
--- a/src/input/mpegts/mpegts_network.c
+++ b/src/input/mpegts/mpegts_network.c
@@ -84,12 +84,14 @@ const idclass_t mpegts_network_class =
   .ic_class      = "mpegts_network",
   .ic_caption    = "MPEGTS Network",
   .ic_save       = mpegts_network_class_save,
+  .ic_event      = "mpegts_network",
   .ic_properties = (const property_t[]){
     {
       .type     = PT_STR,
       .id       = "networkname",
       .name     = "Network Name",
       .off      = offsetof(mpegts_network_t, mn_network_name),
+      .notify   = idnode_notify_title_changed,
     },
     {
       .type     = PT_U16,
@@ -279,9 +281,6 @@ mpegts_network_create0
   mn->mn_display_name(mn, buf, sizeof(buf));
   tvhtrace("mpegts", "created network %s", buf);
 
-  /* Notification */
-  idnode_notify(&mn->mn_id, "mpegts_network", 0);
-
   return mn;
 }
 
diff --git a/src/service.c b/src/service.c
index 6c80ec35..0798351f 100644
--- a/src/service.c
+++ b/src/service.c
@@ -441,9 +441,6 @@ service_create0
   if (conf)
     service_load(t, conf);
 
-  /* Notify */
-  idnode_notify(&t->s_id, "service", 0);
-
   return t;
 }
 
diff --git a/src/webui/extjs_dvb.c b/src/webui/extjs_dvb.c
index 4b0c0981..d1a1cc56 100644
--- a/src/webui/extjs_dvb.c
+++ b/src/webui/extjs_dvb.c
@@ -387,7 +387,7 @@ extjs_mpegts_input
   (http_connection_t *hc, const char *remain, void *opaque)
 {
   mpegts_input_t   *mi;
-  //mpegts_network_t *mn;
+  mpegts_network_t *mn;
   htsbuf_queue_t   *hq  = &hc->hc_reply;
   const char       *op  = http_arg_get(&hc->hc_req_args, "op");
   htsmsg_t         *out = htsmsg_create_map();
@@ -403,8 +403,32 @@ extjs_mpegts_input
       idnode_set_add(&ins, (idnode_t*)mi, &conf.filter);
     extjs_idnode_grid(&ins, &conf, out);
   } else if (!strcmp(op, "class")) {
-    htsmsg_t *list= idclass_serialize(&mpegts_input_class);
+    htsmsg_t *list = idclass_serialize(&mpegts_input_class);
     htsmsg_add_msg(out, "entries", list);
+  } else if (!strcmp(op, "network_list")) {
+    const char *uuid = http_arg_get(&hc->hc_req_args, "uuid");
+    if (!uuid) return HTTP_STATUS_BAD_REQUEST;
+    pthread_mutex_lock(&global_lock);
+    mi = mpegts_input_find(uuid);
+    if (mi) {
+      int i;
+      idnode_set_t *is = mi->mi_network_list(mi);
+      if (is) {
+        htsmsg_t     *l  = htsmsg_create_list();
+        for (i = 0; i < is->is_count; i++) {
+          char buf[256];
+          htsmsg_t *e = htsmsg_create_map();
+          mn = (mpegts_network_t*)is->is_array[i];
+          htsmsg_add_str(e, "key", idnode_uuid_as_str(is->is_array[i]));
+          mn->mn_display_name(mn, buf, sizeof(buf));
+          htsmsg_add_str(e, "val", buf);
+          htsmsg_add_msg(l, NULL, e);
+        }
+        htsmsg_add_msg(out, "entries", l);
+        idnode_set_free(is);
+      }
+    }
+    pthread_mutex_unlock(&global_lock);
 #if 0
   } else if (!strcmp(op, "network_class")) {
     const char *uuid = http_arg_get(&hc->hc_req_args, "uuid");
diff --git a/src/webui/static/app/idnode.js b/src/webui/static/app/idnode.js
index 7b56d24d..b2345f39 100644
--- a/src/webui/static/app/idnode.js
+++ b/src/webui/static/app/idnode.js
@@ -1,3 +1,41 @@
+/*
+ * Combobox stores
+ */
+tvheadend.idnode_enum_stores = {}
+
+tvheadend.idnode_get_enum = function ( conf )
+{
+  /* Build key */
+  key = conf.url;
+  if (conf.event)
+    key += conf.event;
+  if (conf.params)
+    key += Ext.util.JSON.encode(conf.params);
+
+  /* Use cached */
+  if (key in tvheadend.idnode_enum_stores)
+    return tvheadend.idnode_enum_stores[key];
+
+  /* Build combobox */
+  var st = new Ext.data.JsonStore({
+    root       : conf.root   || 'entries',
+    url        : conf.url,
+    baseParams : conf.params || {},
+    fields     : conf.fields || [ 'key', 'val' ],
+    autoLoad   : true,
+  });
+  tvheadend.idnode_enum_stores[key] = st;
+
+  /* Event to update */
+  if (conf.event) {
+    tvheadend.comet.on(conf.event, function(){
+      st.reload();
+    });
+  }
+
+  return st;
+}
+
 json_decode = function(d)
 {
   if (d && d.responseText) {
@@ -18,6 +56,16 @@ json_decode = function(d)
 tvheadend.idnode_enum_store = function(f)
 {
   var store = null;
+
+  /* API fetch */
+  if (f.enum.type == 'api') {
+    return tvheadend.idnode_get_enum({
+      url    : 'api/' + f.enum.uri,
+      params : f.enum.params,
+      event  : f.enum.event
+    });
+  }
+
   switch (f.type) {
     case 'str':
       if (f.enum.length > 0 && f.enum[0] instanceof Object)