diff --git a/config-models/aether-4.x/files/yang/onf-connectivity-service.yang b/config-models/aether-4.x/files/yang/onf-connectivity-service.yang
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+// SPDX-FileCopyrightText: 2021 Open Networking Foundation
+//
+// SPDX-License-Identifier: LicenseRef-ONF-Member-Only-1.0
+
+module onf-connectivity-service {
+  namespace "http://opennetworking.org/aether/connectivity-service";
+  prefix cs;
+
+  import ietf-inet-types { prefix inet; }
+  import ietf-yang-types{ prefix yg; }
+  import onf-aether-types { prefix at; }
+
+  organization "Open Networking Foundation.";
+  contact "Scott Baker";
+  description 
+    "An Aether Connectivity service is the linkage between the
+     ROC and a core that provides connectivity.";
+
+  revision "2021-06-02" {
+    description "An Aether Connectivity Service. Specifies the endpoints where the sdcore-adapter should push configuration to. A single connectivity service may be attached to multiple Enterprises.";
+    reference "RFC 6087";
+  }
+
+  typedef connectivity-service-id {
+        type yg:yang-identifier {
+            length 1..32;
+        }
+  }
+
+  container connectivity-service {
+    description "The top level container";
+
+    list connectivity-service {
+      key "id";
+      description
+        "List of connectivity services";
+
+      leaf id {
+        type connectivity-service-id;
+        description "ID for this connectivity service.";
+      }
+
+      leaf display-name {
+        type string {
+            length 1..80;
+        }
+        description "display name to use in GUI or CLI";
+      }     
+
+      leaf description {
+        type at:description;
+        description "description of this connectivity service";
+      }
+
+      leaf spgwc-endpoint {
+        type inet:uri;
+        description "url of the spgwc service";
+      }
+
+      leaf hss-endpoint {
+        type inet:uri;
+        description "url of the hss service";
+      }
+
+      leaf pcrf-endpoint {
+        type inet:uri;
+        description "url of the pcrf service";
+      }
+
+      leaf core-5g-endpoint {
+        type inet:uri;
+        description "url of the 5g core";
+      }      
+    }
+  } 
+}