diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java
index 20ded3e..8812cca 100644
--- a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java
@@ -16,13 +16,14 @@
 package org.onosproject.openstacktelemetry.impl;
 
 import io.grpc.ManagedChannel;
-import io.grpc.ManagedChannelBuilder;
 import org.apache.felix.scr.annotations.Activate;
 import org.apache.felix.scr.annotations.Component;
 import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.Service;
 import org.onosproject.openstacktelemetry.api.GrpcTelemetryAdminService;
-import org.onosproject.openstacktelemetry.api.config.GrpcTelemetryConfig;
+import org.onosproject.openstacktelemetry.api.OpenstackTelemetryService;
 import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -36,16 +37,25 @@
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected OpenstackTelemetryService openstackTelemetryService;
+
     private ManagedChannel channel = null;
 
     @Activate
     protected void activate() {
+
+        openstackTelemetryService.addTelemetryService(this);
+
         log.info("Started");
     }
 
     @Deactivate
     protected void deactivate() {
         stop();
+
+        openstackTelemetryService.removeTelemetryService(this);
+
         log.info("Stopped");
     }
 
@@ -56,22 +66,24 @@
             return;
         }
 
-        GrpcTelemetryConfig grpcConfig = (GrpcTelemetryConfig) config;
-        channel = ManagedChannelBuilder
-                .forAddress(grpcConfig.address(), grpcConfig.port())
-                .maxInboundMessageSize(grpcConfig.maxInboundMsgSize())
-                .usePlaintext(grpcConfig.usePlaintext())
-                .build();
+        // FIXME do not activate grpc service for now due to deps conflict
+//        GrpcTelemetryConfig grpcConfig = (GrpcTelemetryConfig) config;
+//        channel = ManagedChannelBuilder
+//                .forAddress(grpcConfig.address(), grpcConfig.port())
+//                .maxInboundMessageSize(grpcConfig.maxInboundMsgSize())
+//                .usePlaintext(grpcConfig.usePlaintext())
+//                .build();
 
         log.info("gRPC producer has Started");
     }
 
     @Override
     public void stop() {
-        if (channel != null) {
-            channel.shutdown();
-            channel = null;
-        }
+        // FIXME do not activate grpc service for now due to deps conflict
+//        if (channel != null) {
+//            channel.shutdown();
+//            channel = null;
+//        }
 
         log.info("gRPC producer has Stopped");
     }
@@ -85,6 +97,16 @@
     @Override
     public Object publish(Object record) {
         // TODO: need to find a way to invoke gRPC endpoint using channel
+
+        if (channel == null) {
+            log.warn("gRPC telemetry service has not been enabled!");
+        }
+
         return null;
     }
+
+    @Override
+    public boolean isRunning() {
+        return channel != null;
+    }
 }