diff --git a/README.md b/README.md
index 5f2b4a8..ead2ea0 100644
--- a/README.md
+++ b/README.md
@@ -120,7 +120,23 @@ Example code below:
     		if (sms.dlr === true) {
     			serverSession.sendDlr({
     				'smsId': 450,
-    				'status': 0 // 0 == no error, 1 == error. No other values are allowed
+    				'status': 2
+
+    				/*
+    				 * All available dlr status codes:
+    				 *
+    				 * 0	SCHEDULED	The message is scheduled for later sending.
+    				 * 1	ENROUTE	The message is enroute.
+    				 * 2	DELIVERED	The message was successfully delivered.
+    				 * 3	EXPIRED	The SMSC was unable to deliver the message in a specified amount of time.For instance when the phone was turned off.
+    				 * 4	DELETED	The message was deleted.
+    				 * 5	UNDELIVERABLE	The SMS was unable to deliver the message.For instance, when the number does not exist.
+    				 * 6	ACCEPTED	The SMS was accepted and will be send.
+    				 * 7	UNKNOWN	Unknown error occured.
+    				 * 8	REJECTED	The message was rejected.The provider could have blocked phonenumbers in this range.
+    				 * 9	SKIPPED	The message was skipped.
+    				 */
+
     			});
     		}
     	});
diff --git a/lib/defs.js b/lib/defs.js
index 976ea08..de23919 100644
--- a/lib/defs.js
+++ b/lib/defs.js
@@ -47,7 +47,11 @@ consts = {
 		DELIVERED:     2,
 		EXPIRED:       3,
 		DELETED:       4,
-		UNDELIVERABLE: 5
+		UNDELIVERABLE: 5,
+		ACCEPTED:      6,
+		UNKNOWN:       7,
+		REJECTED:      8,
+		SKIPPED:       9
 	},
 	TON: {
 		UNKNOWN:           0x00,