diff --git a/back/model-config.json b/back/model-config.json
index e0bc92200..55c34ff64 100644
--- a/back/model-config.json
+++ b/back/model-config.json
@@ -130,6 +130,9 @@
     "Payment": {
         "dataSource": "vn"
     },
+    "PbxConfig": {
+        "dataSource": "vn"
+    },
     "Postcode": {
         "dataSource": "vn"
     },
diff --git a/back/models/pbx-config.json b/back/models/pbx-config.json
new file mode 100644
index 000000000..44137b55d
--- /dev/null
+++ b/back/models/pbx-config.json
@@ -0,0 +1,27 @@
+{
+    "name": "PbxConfig",
+    "base": "VnModel",
+    "options": {
+        "mysql": {
+            "table": "pbx.config"
+        }
+    },
+    "properties": {
+        "id": {
+            "type": "number",
+            "id": true
+        },
+        "defaultPrefix": {
+            "type": "string"
+        }
+    },
+    "acls": [
+        {
+            "property": "*",
+            "accessType": "READ",
+            "principalType": "ROLE",
+            "principalId": "employee",
+            "permission": "ALLOW"
+        }
+    ]
+}
\ No newline at end of file