diff --git a/channels/chan_misdn.c b/channels/chan_misdn.c
index 164ff8a476..0c6c25c9a5 100644
--- a/channels/chan_misdn.c
+++ b/channels/chan_misdn.c
@@ -2416,6 +2416,15 @@ static int misdn_hangup(struct ast_channel *ast)
 	
 	bc=p->bc;
 
+	if (bc) {
+		const char *tmp=pbx_builtin_getvar_helper(ast,"MISDN_USERUSER");
+		if (tmp) {
+			ast_log(LOG_NOTICE, "MISDN_USERUSER: %s\n", tmp);
+			strcpy(bc->uu, tmp);
+			bc->uulen=strlen(bc->uu);
+		}
+	}
+
 	MISDN_ASTERISK_TECH_PVT(ast)=NULL;
 	p->ast=NULL;
 
diff --git a/channels/misdn/ie.c b/channels/misdn/ie.c
index 4093805b5b..9140041320 100644
--- a/channels/misdn/ie.c
+++ b/channels/misdn/ie.c
@@ -1353,7 +1353,7 @@ static void enc_ie_useruser(unsigned char **ntmode, msg_t *msg, int protocol, ch
 		
 	if (MISDN_IE_DEBG) printf("    protocol=%d user-user%s\n", protocol, debug);
 
-	l = user_len;
+	l = user_len+1;
 	p = msg_put(msg, l+3);
 	if (nt)
 		*ntmode = p+1;
diff --git a/channels/misdn/isdn_msg_parser.c b/channels/misdn/isdn_msg_parser.c
index a2e879fd07..4630c3780d 100644
--- a/channels/misdn/isdn_msg_parser.c
+++ b/channels/misdn/isdn_msg_parser.c
@@ -797,6 +797,12 @@ static msg_t *build_disconnect (struct isdn_msg msgs[], struct misdn_bchannel *b
 	
 	enc_ie_cause(&disconnect->CAUSE, msg, (nt)?1:0, bc->out_cause,nt,bc);
 	if (nt) enc_ie_progress(&disconnect->PROGRESS, msg, 0, nt?1:5, 8 ,nt,bc);
+
+	if (bc->uulen) {
+		int  protocol=4;
+		enc_ie_useruser(&disconnect->USER_USER, msg, protocol, bc->uu, bc->uulen, nt,bc);
+		cb_log(1,bc->port,"ENCODING USERUESRINFO:%s\n",bc->uu);
+	}
   
 #if DEBUG 
 	printf("Building DISCONNECT Msg\n"); 
@@ -868,6 +874,12 @@ static msg_t *build_release (struct isdn_msg msgs[], struct misdn_bchannel *bc,
   
 	if (bc->out_cause>= 0)
 		enc_ie_cause(&release->CAUSE, msg, nt?1:0, bc->out_cause, nt,bc);
+
+	if (bc->uulen) {
+		int  protocol=4;
+		enc_ie_useruser(&release->USER_USER, msg, protocol, bc->uu, bc->uulen, nt,bc);
+		cb_log(1,bc->port,"ENCODING USERUESRINFO:%s\n",bc->uu);
+	}
   
 #if DEBUG 
 	printf("Building RELEASE Msg\n"); 
@@ -918,6 +930,12 @@ static msg_t *build_release_complete (struct isdn_msg msgs[], struct misdn_bchan
 	release_complete=(RELEASE_COMPLETE_t*)((msg->data+HEADER_LEN)); 
 	
 	enc_ie_cause(&release_complete->CAUSE, msg, nt?1:0, bc->out_cause, nt,bc);
+
+	if (bc->uulen) {
+		int  protocol=4;
+		enc_ie_useruser(&release_complete->USER_USER, msg, protocol, bc->uu, bc->uulen, nt,bc);
+		cb_log(1,bc->port,"ENCODING USERUESRINFO:%s\n",bc->uu);
+	}
   
 #if DEBUG 
 	printf("Building RELEASE_COMPLETE Msg\n");