diff --git a/xos/synchronizer/models/volt.xproto b/xos/synchronizer/models/volt.xproto
index 3106210..2824de3 100644
--- a/xos/synchronizer/models/volt.xproto
+++ b/xos/synchronizer/models/volt.xproto
@@ -52,7 +52,8 @@
 }
 
 message PONPort (PortBase){
-    option verbose_name = "PON Port";
+    option verbose_name = "OLT PON Port";
+    option description="OLT Side PON Port";
 
     required manytoone olt_device->OLTDevice:pon_ports = 1 [db_index = True, null = False, blank = False];
     required int32 s_tag = 2 [help_text = "S Tag", null = False, db_index = False, blank = False];
@@ -78,6 +79,17 @@
     optional string connect_status = 8 [help_text = "connect_status", null = True, db_index = False, blank = False, feedback_state = True];
 }
 
+message PONONUPort (PortBase) {
+    option verbose_name = "ONU PON Port";
+    option description="ONU Side PON Port";
+    required manytoone onu_device->ONUDevice:pononu_ports = 1 [db_index = True, null = False, blank = False];
+}
+
+message UNIPort (PortBase) {
+    option verbose_name = "UNI Port";
+    required manytoone onu_device->ONUDevice:uni_ports = 1 [db_index = True, null = False, blank = False];
+}
+
 message VOLTServiceInstance (ServiceInstance){
     option kind = "vOLT";
     option owner_class_name = "VOLTService";