diff --git a/channels/chan_misdn.c b/channels/chan_misdn.c
index e486c58ad..fa13d0383 100644
--- a/channels/chan_misdn.c
+++ b/channels/chan_misdn.c
@@ -351,7 +351,11 @@ int add_out_calls(int port);
 int add_in_calls(int port);
 
 
+#ifdef MISDN_1_2
+static int update_pipeline_config(struct misdn_bchannel *bc);
+#else
 static int update_ec_config(struct misdn_bchannel *bc);
+#endif
 
 
 
@@ -1019,7 +1023,11 @@ static void print_bc_info (int fd, struct chan_list* help, struct misdn_bchannel
 			"  --> activated: %d\n"
 			"  --> state: %s\n"
 			"  --> capability: %s\n"
+#ifdef MISDN_1_2
+			"  --> pipeline: %s\n"
+#else
 			"  --> echo_cancel: %d\n"
+#endif
 			"  --> notone : rx %d tx:%d\n"
 			"  --> bc_hold: %d\n",
 			help->ast->name,
@@ -1032,7 +1040,11 @@ static void print_bc_info (int fd, struct chan_list* help, struct misdn_bchannel
 			bc->active,
 			bc_state2str(bc->bc_state),
 			bearer2str(bc->capability),
-			bc->ec_enable,
+#ifdef MISDN_1_2
+			bc->pipeline,
+#else
+ 			bc->ec_enable,
+#endif
 
 			help->norxtone,help->notxtone,
 			bc->holded
@@ -1260,7 +1272,11 @@ static int misdn_toggle_echocancel (int fd, int argc, char *argv[])
 			tmp->toggle_ec=tmp->toggle_ec?0:1;
 
 			if (tmp->toggle_ec) {
+#ifdef MISDN_1_2
+				update_pipeline_config(tmp->bc);
+#else
 				update_ec_config(tmp->bc);
+#endif
 				manager_ec_enable(tmp->bc);
 			} else {
 				manager_ec_disable(tmp->bc);
@@ -1598,6 +1614,25 @@ void debug_numplan(int port, int numplan, char *type)
 
 
 
+#ifdef MISDN_1_2
+static int update_pipeline_config(struct misdn_bchannel *bc)
+{
+	int ec;
+
+	misdn_cfg_get(bc->port, MISDN_CFG_PIPELINE, bc->pipeline, sizeof(bc->pipeline));
+
+	if (*bc->pipeline)
+		return 0;
+
+	misdn_cfg_get(bc->port, MISDN_CFG_ECHOCANCEL, &ec, sizeof(int));
+	if (ec == 1)
+		snprintf(bc->pipeline, sizeof(bc->pipeline) - 1, "mg2ec");
+	else if (ec > 1)
+		snprintf(bc->pipeline, sizeof(bc->pipeline) - 1, "mg2ec(deftaps=%d)", ec);
+
+	return 0;
+}
+#else
 static int update_ec_config(struct misdn_bchannel *bc)
 {
 	int ec;
@@ -1611,17 +1646,10 @@ static int update_ec_config(struct misdn_bchannel *bc)
 		bc->ec_enable=1;
 		bc->ec_deftaps=ec;
 	}
-#ifdef WITH_ECHOTRAINING 
-	int ectr;
-	misdn_cfg_get( port, MISDN_CFG_ECHOTRAINING, &ectr, sizeof(int));
-	
-	if ( ectr >= 0 ) {
-		bc->ec_training=ectr;
-	}
-#endif
 
 	return 0;
 }
+#endif
 
 
 static int read_config(struct chan_list *ch, int orig) {
@@ -1696,7 +1724,11 @@ static int read_config(struct chan_list *ch, int orig) {
 	
 	ast_copy_string (ast->context,ch->context,sizeof(ast->context));	
 
+#ifdef MISDN_1_2
+	update_pipeline_config(bc);
+#else
 	update_ec_config(bc);
+#endif
 
 	{
 		int eb3;
@@ -1966,9 +1998,15 @@ static int misdn_call(struct ast_channel *ast, char *dest, int timeout)
 		int bridging;
 		misdn_cfg_get( 0, MISDN_GEN_BRIDGING, &bridging, sizeof(int));
 		if (bridging && ch->other_ch) {
-			chan_misdn_log(0, port, "Disabling EC on both Sides\n");	
+#ifdef MISDN_1_2
+			chan_misdn_log(0, port, "Disabling EC (aka Pipeline) on both Sides\n");
+			*ch->bc->pipeline=0;
+			*ch->other_ch->bc->pipeline=0;
+#else
+			chan_misdn_log(0, port, "Disabling EC on both Sides\n");
 			ch->bc->ec_enable=0;
 			ch->other_ch->bc->ec_enable=0;
+#endif
 		}
 		
 		r=misdn_lib_send_event( newbc, EVENT_SETUP );
@@ -2466,7 +2504,11 @@ static struct ast_frame *process_ast_dsp(struct chan_list *tmp, struct ast_frame
  			isdn_lib_update_rxgain(tmp->bc);
  			tmp->bc->txgain = 0;
  			isdn_lib_update_txgain(tmp->bc);
+#ifdef MISDN_1_2
+			*tmp->bc->pipeline = 0;
+#else
  			tmp->bc->ec_enable = 0;
+#endif
  			isdn_lib_update_ec(tmp->bc);
  			isdn_lib_stop_dtmf(tmp->bc);
  			switch (tmp->faxdetect) {
@@ -4922,16 +4964,22 @@ static int misdn_set_opt_exec(struct ast_channel *chan, void *data)
 		case 'c':
 			keyidx=atoi(++tok);
       
-			if (keyidx > misdn_key_vector_size  || keyidx < 0 ) {
-				ast_log(LOG_WARNING, "You entered the keyidx: %d but we have only %d keys\n",keyidx, misdn_key_vector_size );
-				continue; 
+			char keys[4096];
+			char *key=NULL, *tmp;
+			int i;
+			misdn_cfg_get( 0, MISDN_GEN_CRYPT_KEYS, keys, sizeof(keys));
+
+			tmp=keys;
+
+			for (i=0; i<keyidx; i++) {
+				key=strsep(&tmp,",");
 			}
-      
-			{
-				ast_copy_string(ch->bc->crypt_key,  misdn_key_vector[keyidx], sizeof(ch->bc->crypt_key));
+
+			if (key) {
+				ast_copy_string(ch->bc->crypt_key, key, sizeof(ch->bc->crypt_key));
 			}
-			
-			chan_misdn_log(0, ch->bc->port, "SETOPT: crypt with key:%s\n",misdn_key_vector[keyidx]);
+
+			chan_misdn_log(0, ch->bc->port, "SETOPT: crypt with key:%s\n",ch->bc->crypt_key);
 			break;
 
 		case 'e':
@@ -4939,14 +4987,22 @@ static int misdn_set_opt_exec(struct ast_channel *chan, void *data)
 			
 			if (neglect) {
 				chan_misdn_log(1, ch->bc->port, " --> disabled\n");
+#ifdef MISDN_1_2
+				*ch->bc->pipeline=0;
+#else
 				ch->bc->ec_enable=0;
+#endif
 			} else {
+#ifdef MISDN_1_2
+				update_pipeline_config(ch->bc);
+#else
 				ch->bc->ec_enable=1;
 				ch->bc->orig=ch->orginator;
 				tok++;
-				if (tok) {
+				if (*tok) {
 					ch->bc->ec_deftaps=atoi(tok);
 				}
+#endif
 			}
 			
 			break;
diff --git a/channels/misdn/Makefile b/channels/misdn/Makefile
index 895dc9dee..85478225b 100644
--- a/channels/misdn/Makefile
+++ b/channels/misdn/Makefile
@@ -1,6 +1,10 @@
 #
 # Makefile for chan_misdn support
 #
+ifneq ($(wildcard /usr/include/linux/mISDNdsp.h),)
+CFLAGS+=-DMISDN_1_2
+endif
+
 all:
 
 %.o: %.c
diff --git a/channels/misdn/chan_misdn_config.h b/channels/misdn/chan_misdn_config.h
index 8869ead50..eacc22b3e 100644
--- a/channels/misdn/chan_misdn_config.h
+++ b/channels/misdn/chan_misdn_config.h
@@ -52,9 +52,8 @@ enum misdn_cfg_elements {
 	MISDN_CFG_EARLY_BCONNECT,      /* int (bool) */
 	MISDN_CFG_INCOMING_EARLY_AUDIO,      /* int (bool) */
 	MISDN_CFG_ECHOCANCEL,          /* int */
-	MISDN_CFG_ECHOCANCELWHENBRIDGED,  /* int (bool) */
-#ifdef WITH_ECHOTRAINGING
-	MISDN_CFG_ECHOTRAINING,        /* int (bool) */
+#ifdef MISDN_1_2
+	MISDN_CFG_PIPELINE,      /* char[] */
 #endif
 
 #ifdef WITH_BEROEC
diff --git a/channels/misdn/isdn_lib.c b/channels/misdn/isdn_lib.c
index 174494f0f..c3745a361 100644
--- a/channels/misdn/isdn_lib.c
+++ b/channels/misdn/isdn_lib.c
@@ -578,14 +578,13 @@ static void empty_bc(struct misdn_bchannel *bc)
 
 	bc->early_bconnect = 1;
 	
+#ifdef MISDN_1_2
+	*bc->pipeline = 0;
+#else
 	bc->ec_enable = 0;
 	bc->ec_deftaps = 128;
-	bc->ec_whenbridged = 0;
-
-#ifdef EC_TRAIN
-	bc->ec_training = 1;
 #endif
-	
+
 	bc->orig=0;
   
 	bc->cause=16;
@@ -4028,7 +4027,11 @@ void isdn_lib_update_txgain (struct misdn_bchannel *bc)
 
 void isdn_lib_update_ec (struct misdn_bchannel *bc)
 {
+#ifdef MISDN_1_2
+	if (*bc->pipeline)
+#else
 	if (bc->ec_enable)
+#endif
 		manager_ec_enable(bc);
 	else
 		manager_ec_disable(bc);
@@ -4207,19 +4210,24 @@ void misdn_lib_send_tone(struct misdn_bchannel *bc, enum tone_e tone)
 
 void manager_ec_enable(struct misdn_bchannel *bc)
 {
-	int ec_arr[2];
-
 	struct misdn_stack *stack=get_stack_by_bc(bc);
 	
 	cb_log(4, stack?stack->port:0,"ec_enable\n");
 
 	if (!misdn_cap_is_speech(bc->capability)) {
 		cb_log(1, stack?stack->port:0, " --> no speech? cannot enable EC\n");
-		return;
-	}
+	} else {
+
+#ifdef MISDN_1_2
+	if (*bc->pipeline) {
+		cb_log(3, stack?stack->port:0,"Sending Control PIPELINE_CFG %s\n",bc->pipeline);
+		manager_ph_control_block(bc, PIPELINE_CFG, bc->pipeline, strlen(bc->pipeline) + 1);
+ 	}
+#else
+	int ec_arr[2];
 
 	if (bc->ec_enable) {
-		cb_log(3, stack?stack->port:0,"Sending Control ECHOCAN_ON taps:%d training:%d\n",bc->ec_deftaps, bc->ec_training);
+		cb_log(3, stack?stack->port:0,"Sending Control ECHOCAN_ON taps:%d\n",bc->ec_deftaps);
 	
 		switch (bc->ec_deftaps) {
 		case 4:
@@ -4239,14 +4247,12 @@ void manager_ec_enable(struct misdn_bchannel *bc)
 		}
 	
 		ec_arr[0]=bc->ec_deftaps;
-#ifdef EC_TRAIN
-		ec_arr[1]=bc->ec_training;
-#else
 		ec_arr[1]=0;
-#endif
 		
 		manager_ph_control_block(bc,  ECHOCAN_ON,  ec_arr, sizeof(ec_arr));
 	}
+#endif
+	}
 }
 
 
@@ -4262,10 +4268,14 @@ void manager_ec_disable(struct misdn_bchannel *bc)
 		return;
 	}
 
+#ifdef MISDN_1_2
+	manager_ph_control_block(bc, PIPELINE_CFG, "", 0);
+#else
 	if ( ! bc->ec_enable) {
 		cb_log(3, stack?stack->port:0, "Sending Control ECHOCAN_OFF\n");
 		manager_ph_control(bc,  ECHOCAN_OFF, 0);
 	}
+#endif
 }
 
 struct misdn_stack* get_misdn_stack() {
diff --git a/channels/misdn/isdn_lib.h b/channels/misdn/isdn_lib.h
index ccd87bcfb..068518be9 100644
--- a/channels/misdn/isdn_lib.h
+++ b/channels/misdn/isdn_lib.h
@@ -343,10 +343,12 @@ struct misdn_bchannel {
   
 	/** list stuf **/
 
+#ifdef MISDN_1_2
+	char pipeline[128];
+#else
 	int ec_enable;
 	int ec_deftaps;
-	int ec_whenbridged;
-	int ec_training;
+#endif
 
 #ifdef WITH_BEROEC
 	beroec_t *ec;
diff --git a/channels/misdn_config.c b/channels/misdn_config.c
index 942c4cc27..9e8bc9a8a 100644
--- a/channels/misdn_config.c
+++ b/channels/misdn_config.c
@@ -235,9 +235,14 @@ static const struct misdn_cfg_spec port_spec[] = {
 		"\tA value of zero turns echocancellation off.\n"
 		"\n"
 		"\tPossible values are: 0,32,64,128,256,yes(=128),no(=0)" },
-	{ "echocancelwhenbridged", MISDN_CFG_ECHOCANCELWHENBRIDGED, MISDN_CTYPE_BOOL, "no", NONE,
-		"This disables echocancellation when the call is bridged between\n"
-		"\tmISDN channels" },
+#ifdef MISDN_1_2
+	{ "pipeline", MISDN_CFG_PIPELINE, MISDN_CTYPE_STR, NO_DEFAULT, NONE,
+		"Set the configuration string for the mISDN dsp pipeline.\n"
+		"\n"
+		"\tExample for enabling the mg2 echo cancellation module with deftaps\n"
+		"\tset to 128:\n"
+		"\t\tmg2ec(deftaps=128)" },
+#endif
 #ifdef WITH_BEROEC
 	{ "bnechocancel", MISDN_CFG_BNECHOCANCEL, MISDN_CTYPE_BOOLINT, "yes", 64,
 		"echotail in ms (1-200)\n"},
diff --git a/configure b/configure
index 02d97459a..7b1cbb86a 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 58932 .
+# From configure.ac Revision: 58948 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.60.
 #
@@ -22901,6 +22901,164 @@ _ACEOF
    fi
 fi
 
+   if test "${ac_cv_header_linux_mISDNdsp_h+set}" = set; then
+  { echo "$as_me:$LINENO: checking for linux/mISDNdsp.h" >&5
+echo $ECHO_N "checking for linux/mISDNdsp.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_linux_mISDNdsp_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_linux_mISDNdsp_h" >&5
+echo "${ECHO_T}$ac_cv_header_linux_mISDNdsp_h" >&6; }
+else
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking linux/mISDNdsp.h usability" >&5
+echo $ECHO_N "checking linux/mISDNdsp.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <linux/mISDNdsp.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
+  { (case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking linux/mISDNdsp.h presence" >&5
+echo $ECHO_N "checking linux/mISDNdsp.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <linux/mISDNdsp.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: linux/mISDNdsp.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: linux/mISDNdsp.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/mISDNdsp.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: linux/mISDNdsp.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: linux/mISDNdsp.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: linux/mISDNdsp.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/mISDNdsp.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: linux/mISDNdsp.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/mISDNdsp.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: linux/mISDNdsp.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/mISDNdsp.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: linux/mISDNdsp.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/mISDNdsp.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: linux/mISDNdsp.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/mISDNdsp.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: linux/mISDNdsp.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for linux/mISDNdsp.h" >&5
+echo $ECHO_N "checking for linux/mISDNdsp.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_linux_mISDNdsp_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_linux_mISDNdsp_h=$ac_header_preproc
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_linux_mISDNdsp_h" >&5
+echo "${ECHO_T}$ac_cv_header_linux_mISDNdsp_h" >&6; }
+
+fi
+if test $ac_cv_header_linux_mISDNdsp_h = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define MISDN_1_2 1
+_ACEOF
+
+fi
+
+
 fi
 
 
diff --git a/configure.ac b/configure.ac
index fc7e52b79..ddc70ed39 100644
--- a/configure.ac
+++ b/configure.ac
@@ -627,6 +627,7 @@ AST_EXT_LIB_CHECK([MISDN], [mISDN], [mISDN_open], [mISDNuser/mISDNlib.h])
 if test "${PBX_MISDN}" = 1; then
    AST_EXT_LIB_CHECK([ISDNNET], [isdnnet], [init_manager], [mISDNuser/isdn_net.h], [-lmISDN -lpthread])
    AST_EXT_LIB_CHECK([SUPPSERV], [suppserv], [encodeFac], [mISDNuser/suppserv.h])
+   AC_CHECK_HEADER([linux/mISDNdsp.h], [AC_DEFINE_UNQUOTED([MISDN_1_2], 1, [Build chan_misdn for mISDN 1.2 or later.])])
 fi
 
 AST_EXT_LIB_CHECK([NBS], [nbs], [nbs_connect], [nbs.h])
diff --git a/include/asterisk/autoconfig.h.in b/include/asterisk/autoconfig.h.in
index a010f7008..e450ba93f 100644
--- a/include/asterisk/autoconfig.h.in
+++ b/include/asterisk/autoconfig.h.in
@@ -636,6 +636,9 @@
    slash. */
 #undef LSTAT_FOLLOWS_SLASHED_SYMLINK
 
+/* Build chan_misdn for mISDN 1.2 or later. */
+#undef MISDN_1_2
+
 /* Define to the address where bug reports for this package should be sent. */
 #undef PACKAGE_BUGREPORT