diff --git a/GSMDriver.st b/GSMDriver.st
index 1fcba03..2aed410 100644
--- a/GSMDriver.st
+++ b/GSMDriver.st
@@ -376,17 +376,33 @@ ProcedureBase subclass: USSDProcedure [
         | req str |
 
         req := {BERTag fromTuple: #(2 true 1). OrderedCollection
-                with: {BERTag integer. #(4).}
+                with: {BERTag integer. #(0).}
                 with: {BERTag integer. #(59).}
                 with: {BERTag fromTuple: #(0 true 16). OrderedCollection
                     with: {BERTag octetString. #(15).}
-                    with: {BERTag octetString. aNr asUSSD7Bit.}.}.}.
+                    with: {BERTag octetString. aNr asUSSD7Bit}}}.
 
         str := WriteStream on: (ByteArray new: 40).
         (DERTLVStream on: str) nextPut: req.
         ^ str contents
     ]
 
+    USSDProcedure class >> buildReturnLast: invokeId text: aText [
+        | ret str |
+
+        ret := {BERTag fromTuple: #(2 true 2). OrderedCollection
+                with: {BERTag integer. invokeId}
+                with: {BERTag sequence. OrderedCollection
+                    with: {BERTag integer. #(60)}
+                    with: {BERTag sequence. OrderedCollection
+                        with: {BERTag octetString. #(15).}
+                        with: {BERTag octetString. aText asUSSD7Bit}}}}.
+
+        str := WriteStream on: (ByteArray new: 40).
+        (DERTLVStream on: str) nextPut: ret.
+        ^ str contents
+    ]
+
     nr: aNr [
         nr := aNr.
     ]
@@ -419,6 +435,14 @@ ProcedureBase subclass: USSDProcedure [
         aMsg class messageType = GSM48SSMessage msgReleaseCompl ifTrue:[
             aMsg inspect.
             self success: aMsg ti = 9.
+        ].
+
+        aMsg class messageType = GSM48SSMessage msgFacility ifTrue: [
+            | fac |
+            fac := GSM48SSFacility new.
+            fac ti: 1.
+            fac facility data: (self class buildReturnLast: #(1) text: '45050888658950').
+            conn nextPutData: (BSSAPDTAP initWith: fac linkIdentifier: 0).
         ]
     ]
 ]