diff --git a/ttcn/LibIms_Steps.ttcn b/ttcn/LibIms_Steps.ttcn
index 7d08cca0c888d89ed975222e144d58db83a4618a..c2cf0b7bbc8c97c581e899d3a50e61198f8e8611 100644
--- a/ttcn/LibIms_Steps.ttcn
+++ b/ttcn/LibIms_Steps.ttcn
@@ -1347,6 +1347,41 @@ module LibIms_Steps
 		  }
 		} // end function f_terminateCall_UE
 		
+		
+        /**
+         * 
+         * @desc  sends BYE and awaits response and De-registration
+         * @param p_CallId parameter for outgoing BYE
+         * @param p_cSeq parameter for outgoing BYE
+         * @param p_from parameter for outgoing BYE
+         * @param p_to parameter for outgoing BYE
+         * @param p_reqHostPort parameter for outgoing BYE
+         */
+        function f_terminateCall_UE_withDeReg(SipUrl p_requestUri, CallId p_CallId, inout CSeq p_cSeq, From p_from,
+          template To p_to) runs on ImsComponent
+        {
+          LibSip_Steps.f_setHeadersBYE(p_cSeq);
+          // Sending of a BYE request to release the call and expect a final response
+          f_SendBYE(m_BYE_Request_UE(p_requestUri, p_CallId, p_cSeq, p_from, valueof(p_to), vc_via, vc_route));
+      
+          tc_resp.start(PX_SIP_TRESP);
+          alt
+          {
+            [] SIPP.receive	(mw_Response_Base(mw_statusLine1xx, p_CallId, p_cSeq))
+              {
+                repeat;
+              }
+            [] SIPP.receive	(mw_Response_Base(mw_statusLineFinal, p_CallId, p_cSeq))
+              {
+                tc_resp.stop;
+              }
+            // timeout should be handled in default_alt_step
+          };
+          action("Please de-register");          
+          f_IMS_awaitDeRegistration();
+          //f_terminate_component();
+        } // end function f_terminateCall_UE_withDeReg
+		
 		}
 	group defaults {