diff --git a/core/grpc_service.go b/core/grpc_service.go
index 41da7f0..e1866b8 100644
--- a/core/grpc_service.go
+++ b/core/grpc_service.go
@@ -51,12 +51,63 @@
 }
 
 func (s *Server) GetDeviceInfo(c context.Context, empty *openolt.Empty) (*openolt.DeviceInfo, error) {
-	logger.Info("OLT receives GetDeviceInfo()\n")
-	devinfo := new(openolt.DeviceInfo)
-	devinfo.Vendor = "CORD"
-	devinfo.OnuIdStart = 0
-	devinfo.OnuIdEnd = 3
-	devinfo.PonPorts = 4
+    logger.Info("OLT receives GetDeviceInfo()\n")
+    devinfo := new(openolt.DeviceInfo)
+    devinfo.Vendor = "EdgeCore"
+    devinfo.Model = "asfvolt16"
+    devinfo.HardwareVersion = ""
+    devinfo.FirmwareVersion = ""
+    devinfo.Technology = "xgspon"
+    devinfo.PonPorts = 1
+    devinfo.OnuIdStart = 1
+    devinfo.OnuIdEnd = 255
+    devinfo.AllocIdStart = 1024
+    devinfo.AllocIdEnd = 16383
+    devinfo.GemportIdStart = 1024
+    devinfo.GemportIdEnd = 65535
+    devinfo.FlowIdStart = 1
+    devinfo.FlowIdEnd = 16383
+
+     /*
+     for intf_id := 0; intf_id < 16; intf_id++ {
+        r := new(openolt.DeviceInfo_DeviceResourceRanges)
+
+        r.IntfIds = append(r.IntfIds, uint32(intf_id))
+
+        r.Technology = "xgspon"
+
+        p := new(openolt.DeviceInfo_DeviceResourceRanges_Pool)
+        p.Type = openolt.DeviceInfo_DeviceResourceRanges_Pool_ONU_ID
+        p.Sharing = openolt.DeviceInfo_DeviceResourceRanges_Pool_DEDICATED_PER_INTF
+        p.Start = 1
+        p.End = 255
+        r.Pools = append(r.Pools, p)
+
+        p = new(openolt.DeviceInfo_DeviceResourceRanges_Pool)
+        p.Type = openolt.DeviceInfo_DeviceResourceRanges_Pool_ALLOC_ID
+        p.Sharing = openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_SAME_TECH
+        p.Start = 1024
+        p.End = 16383
+        r.Pools = append(r.Pools, p)
+
+        p = new(openolt.DeviceInfo_DeviceResourceRanges_Pool)
+        p.Type = openolt.DeviceInfo_DeviceResourceRanges_Pool_GEMPORT_ID
+        p.Sharing = openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH
+        p.Start = 1024
+        p.End = 65535
+        r.Pools = append(r.Pools, p)
+
+        p = new(openolt.DeviceInfo_DeviceResourceRanges_Pool)
+        p.Type = openolt.DeviceInfo_DeviceResourceRanges_Pool_FLOW_ID
+        p.Sharing = openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH
+        p.Start = 1
+        p.End = 16383
+        r.Pools = append(r.Pools, p)
+
+        devinfo.Ranges = append(devinfo.Ranges, r)
+    }
+    */
+
 	return devinfo, nil
 }