diff --git a/gridappsd-field-bus-lib/gridappsd_field_bus/field_interface/field_proxy_forwarder.py b/gridappsd-field-bus-lib/gridappsd_field_bus/field_interface/field_proxy_forwarder.py
index 004efd3..e62a0ac 100644
--- a/gridappsd-field-bus-lib/gridappsd_field_bus/field_interface/field_proxy_forwarder.py
+++ b/gridappsd-field-bus-lib/gridappsd_field_bus/field_interface/field_proxy_forwarder.py
@@ -5,6 +5,13 @@
 from gridappsd import GridAPPSD
 from gridappsd import topics
 
+from cimgraph.databases import GridappsdConnection, BlazegraphConnection
+from cimgraph.models import BusBranchModel, FeederModel
+
+import os
+import cimgraph.utils as utils
+import cimgraph.data_profile.cimhub_ufls as cim
+
 REQUEST_FIELD = ".".join((topics.PROCESS_PREFIX, "request.field"))
 
 class FieldListener:
@@ -29,13 +36,11 @@ def on_message(self, headers, message):
                 request_type = request_data.get("request_type")
                 if request_type == "get_context":
                     response = self.ot_connection.get_response(headers["destination"],message)
-                    self.proxy_connection.send(headers["reply_to"],response)
+                    self.proxy_connection.send(headers["reply-to"],response)
+                elif request_type == "start_publishing":
+                    response = self.ot_connection.get_response(headers["destination"],message)
+                    self.proxy_connection.send(headers["reply-to"],json.dumps(response))
             
-            elif 'goss.gridappsd.process.request' in headers["destination"]:
-                response = self.ot_connection.get_response(headers["destination"],message)
-                #print(response)
-                self.proxy_connection.send(headers["reply-to"],json.dumps(response))
-
             else:
                 print(f"Unrecognized message received by Proxy: {message}")
 
@@ -48,7 +53,7 @@ class FieldProxyForwarder:
     when direct connection is not possible.
     """
 
-    def __init__(self, connection_url: str, username: str, password: str):
+    def __init__(self, connection_url: str, username: str, password: str, mrid :str):
 
         #Connect to OT
         self.ot_connection = GridAPPSD()
@@ -67,12 +72,40 @@ def __init__(self, connection_url: str, username: str, password: str):
 
         #Subscribe to messages from field
         self.proxy_connection.subscribe(destination=topics.BASE_FIELD_TOPIC+'.*', id=1, ack="auto")
-        self.proxy_connection.subscribe(destination='goss.gridappsd.process.request.data.powergridmodel', id=2, ack="auto")
-
+        self.proxy_connection.subscribe(destination='goss.gridappsd.process.request.*', id=2, ack="auto")
+        
         #Subscribe to messages on OT bus
         self.ot_connection.subscribe(topics.field_input_topic(), self.on_message_from_ot)
 
+
+
+        os.environ['CIMG_CIM_PROFILE'] = 'cimhub_ufls'
+        os.environ['CIMG_URL'] = 'http://localhost:8889/bigdata/namespace/kb/sparql'
+        os.environ['CIMG_DATABASE'] = 'powergridmodel'
+        os.environ['CIMG_NAMESPACE'] = 'http://iec.ch/TC57/CIM100#'
+        os.environ['CIMG_IEC61970_301'] = '8'
+        os.environ['CIMG_USE_UNITS'] = 'False'
+
+        self.database = BlazegraphConnection()
+        distribution_area = cim.DistributionArea(mRID=mrid)
+        self.network = BusBranchModel(
+            connection=self.database,
+            container=distribution_area,
+            distributed=False)
+        self.network.get_all_edges(cim.DistributionArea)
+        self.network.get_all_edges(cim.Substation)
+
+        for substation in self.network.graph.get(cim.Substation,{}).values():
+            print(f'Subscribing to Substation: /topic/goss.gridappsd.field.{substation.mRID}')
+            self.ot_connection.subscribe('/topic/goss.gridappsd.field.'+substation.mRID, self.on_message_from_ot)
+
+
+
+        #self.ot_connection.subscribe(topics.BASE_FIELD_TOPIC, self.on_message_from_ot)
+
+
     def on_message_from_ot(self, headers, message):
+
         "Receives messages coming from OT bus (GridAPPS-D) and forwards to Proxy bus"
         try:
             print(f"Received message from OT: {message}")
@@ -80,6 +113,9 @@ def on_message_from_ot(self, headers, message):
             if headers["destination"] == topics.field_input_topic():
                 self.proxy_connection.send(topics.field_input_topic(),json.dumps(message))
 
+            if 'goss.gridappsd.field' in headers["destination"]:
+
+                self.proxy_connection.send(headers["destination"],json.dumps(message))
             else:
                 print(f"Unrecognized message received by OT: {message}")
 
@@ -93,12 +129,14 @@ def on_message_from_ot(self, headers, message):
     parser.add_argument("username")
     parser.add_argument("passwd")
     parser.add_argument("connection_url")
+    parser.add_argument("mrid")
     opts = parser.parse_args()
     proxy_connection_url = opts.connection_url
     proxy_username = opts.username
     proxy_password = opts.passwd
+    mrid = opts.mrid
 
-    proxy_forwarder = FieldProxyForwarder(proxy_connection_url, proxy_username, proxy_password)
+    proxy_forwarder = FieldProxyForwarder(proxy_connection_url, proxy_username, proxy_password, mrid)
 
     while True:
         time.sleep(0.1)
diff --git a/gridappsd-python-lib/gridappsd/goss.py b/gridappsd-python-lib/gridappsd/goss.py
index 12d49e2..869f24c 100644
--- a/gridappsd-python-lib/gridappsd/goss.py
+++ b/gridappsd-python-lib/gridappsd/goss.py
@@ -121,7 +121,7 @@ def __init__(self,
         if not self.__user__ or not self.__pass__:
             raise ValueError("Invalid username/password specified.")
 
-        self._heartbeat = int(os.environ.get(GRIDAPPSD_ENV_ENUM.GRIDAPPSD_HEARTBEAT.value, 4000))
+        self._heartbeat = int(os.environ.get(GRIDAPPSD_ENV_ENUM.GRIDAPPSD_HEARTBEAT.value, 10000))
         self._conn = None
         self._ids = set()
         self._topic_set = set()
@@ -420,3 +420,14 @@ def on_error(self, header, message):
         _log.error("Error in callback router")
         _log.error(header)
         _log.error(message)
+
+    def on_error(self, header, message):
+        _log.error("Error in callback router")
+        _log.error(header)
+        _log.error(message)
+
+    def on_heartbeat_timeout(self):
+        _log.error("Heartbeat timeout")
+        
+    def on_disconnected(self):
+        _log.info("Disconnected")