diff --git a/channels/chan_misdn.c b/channels/chan_misdn.c
index 4290a30e12..6d517c32c0 100644
--- a/channels/chan_misdn.c
+++ b/channels/chan_misdn.c
@@ -1105,6 +1105,21 @@ static int update_config (struct chan_list *ch, int orig)
 	
 	chan_misdn_log(1,port,"update_config: Getting Config\n");
 
+
+	int hdlc=0;
+	misdn_cfg_get( port, MISDN_CFG_HDLC, &hdlc, sizeof(int));
+	
+	if (hdlc) {
+		switch (bc->capability) {
+		case INFO_CAPABILITY_DIGITAL_UNRESTRICTED:
+		case INFO_CAPABILITY_DIGITAL_RESTRICTED:
+			chan_misdn_log(1,bc->port," --> CONF HDLC\n");
+			bc->hdlc=1;
+			break;
+		}
+		
+	}
+	
 	
 	int pres, screen;
 			
@@ -1244,7 +1259,19 @@ static int read_config(struct chan_list *ch, int orig) {
 
 	misdn_cfg_get( port, MISDN_CFG_NEED_MORE_INFOS, &bc->need_more_infos, sizeof(int));
 	
-
+	int hdlc=0;
+	misdn_cfg_get( port, MISDN_CFG_HDLC, &hdlc, sizeof(int));
+	
+	if (hdlc) {
+		switch (bc->capability) {
+		case INFO_CAPABILITY_DIGITAL_UNRESTRICTED:
+		case INFO_CAPABILITY_DIGITAL_RESTRICTED:
+			chan_misdn_log(1,bc->port," --> CONF HDLC\n");
+			bc->hdlc=1;
+			break;
+		}
+		
+	}
 	/*Initialize new Jitterbuffer*/
 	{
 		misdn_cfg_get( port, MISDN_CFG_JITTERBUFFER, &ch->jb_len, sizeof(int));
@@ -1573,7 +1600,7 @@ static int misdn_call(struct ast_channel *ast, char *dest, int timeout)
 
 		/* update screening and presentation */ 
 		update_config(ch,ORG_AST);
-
+		
 		/* fill in some ies from channel vary*/
 		import_ies(ast, newbc);
 		
diff --git a/channels/misdn/chan_misdn_config.h b/channels/misdn/chan_misdn_config.h
index d30e1482c2..9717e78469 100644
--- a/channels/misdn/chan_misdn_config.h
+++ b/channels/misdn/chan_misdn_config.h
@@ -27,6 +27,7 @@ enum misdn_cfg_elements {
 	MISDN_CFG_TXGAIN,              /* int */
 	MISDN_CFG_TE_CHOOSE_CHANNEL,   /* int (bool) */
 	MISDN_CFG_PMP_L1_CHECK,        /* int (bool) */
+	MISDN_CFG_HDLC,                /* int (bool) */
 	MISDN_CFG_CONTEXT,             /* char[] */
 	MISDN_CFG_LANGUAGE,            /* char[] */
 	MISDN_CFG_MUSICCLASS,            /* char[] */
diff --git a/channels/misdn/isdn_lib.c b/channels/misdn/isdn_lib.c
index a699d7f8a3..b0e9477d07 100644
--- a/channels/misdn/isdn_lib.c
+++ b/channels/misdn/isdn_lib.c
@@ -818,9 +818,11 @@ int setup_bc(struct misdn_bchannel *bc)
 	int channel=bc->channel-1-(bc->channel>16);
 	int b_stid=stack->b_stids[channel>=0?channel:0];
 
+#if 0
 	if (bc->hdlc) {
 		clean_up_bc(bc);
 	}
+#endif
 	
 	if (bc->upset) {
 		cb_log(4, stack->port, "$$$ bc already upsetted stid :%x\n", b_stid);
@@ -946,9 +948,7 @@ int setup_bc(struct misdn_bchannel *bc)
 	
 	bc->upset=1;
 	
-	
 	manager_bchannel_deactivate(bc);
-	
 	return 0;
 }
 
diff --git a/channels/misdn_config.c b/channels/misdn_config.c
index fa712d523c..ee31441596 100644
--- a/channels/misdn_config.c
+++ b/channels/misdn_config.c
@@ -88,6 +88,7 @@ static const struct misdn_cfg_spec port_spec[] = {
 	{ "txgain", MISDN_CFG_TXGAIN, MISDN_CTYPE_INT, "0", NONE },
 	{ "te_choose_channel", MISDN_CFG_TE_CHOOSE_CHANNEL, MISDN_CTYPE_BOOL, "no", NONE },
 	{ "pmp_l1_check", MISDN_CFG_PMP_L1_CHECK, MISDN_CTYPE_BOOL, "yes", NONE },
+	{ "hdlc", MISDN_CFG_HDLC, MISDN_CTYPE_BOOL, "no", NONE },
 	{ "context", MISDN_CFG_CONTEXT, MISDN_CTYPE_STR, "default", NONE },
 	{ "language", MISDN_CFG_LANGUAGE, MISDN_CTYPE_STR, "en", NONE },
 	{ "musicclass", MISDN_CFG_MUSICCLASS, MISDN_CTYPE_STR, "default", NONE },
diff --git a/configs/misdn.conf.sample b/configs/misdn.conf.sample
index 479d6bb83d..67c144bde9 100644
--- a/configs/misdn.conf.sample
+++ b/configs/misdn.conf.sample
@@ -287,6 +287,12 @@ jitterbuffer=4000
 jitterbuffer_upper_threshold=0
 
 
+;
+; change this to yes, if you want to bridge a mISDN data channel to 
+; another channel type or to an application.
+;
+hdlc=no
+
 [intern]
 ; define your ports, e.g. 1,2 (depends on mISDN-driver loading order) 
 ports=1,2