diff --git a/libs/freetdm/src/include/ftdm_buffer.h b/libs/freetdm/src/include/ftdm_buffer.h
new file mode 100644
index 0000000000..e069e2d44b
--- /dev/null
+++ b/libs/freetdm/src/include/ftdm_buffer.h
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2007, Anthony Minessale II
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ * 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef FTDM_BUFFER_H
+#define FTDM_BUFFER_H
+
+#include "freetdm.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup ftdm_buffer Buffer Routines
+ * @ingroup buffer
+ * The purpose of this module is to make a plain buffering interface that can be used for read/write buffers
+ * throughout the application.
+ * @{
+ */
+struct ftdm_buffer;
+typedef struct ftdm_buffer ftdm_buffer_t;
+
+/*! \brief Allocate a new dynamic ftdm_buffer 
+ * \param buffer returned pointer to the new buffer
+ * \param blocksize length to realloc by as data is added
+ * \param start_len ammount of memory to reserve initially
+ * \param max_len length the buffer is allowed to grow to
+ * \return status
+ */
+FT_DECLARE(ftdm_status_t) ftdm_buffer_create(ftdm_buffer_t **buffer, ftdm_size_t blocksize, ftdm_size_t start_len, ftdm_size_t max_len);
+
+/*! \brief Get the length of a ftdm_buffer_t 
+ * \param buffer any buffer of type ftdm_buffer_t
+ * \return int size of the buffer.
+ */
+FT_DECLARE(ftdm_size_t) ftdm_buffer_len(ftdm_buffer_t *buffer);
+
+/*! \brief Get the freespace of a ftdm_buffer_t 
+ * \param buffer any buffer of type ftdm_buffer_t
+ * \return int freespace in the buffer.
+ */
+FT_DECLARE(ftdm_size_t) ftdm_buffer_freespace(ftdm_buffer_t *buffer);
+
+/*! \brief Get the in use amount of a ftdm_buffer_t 
+ * \param buffer any buffer of type ftdm_buffer_t
+ * \return int ammount of buffer curently in use
+ */
+FT_DECLARE(ftdm_size_t) ftdm_buffer_inuse(ftdm_buffer_t *buffer);
+
+/*! \brief Read data from a ftdm_buffer_t up to the ammount of datalen if it is available.  Remove read data from buffer. 
+ * \param buffer any buffer of type ftdm_buffer_t
+ * \param data pointer to the read data to be returned
+ * \param datalen amount of data to be returned
+ * \return int ammount of data actually read
+ */
+FT_DECLARE(ftdm_size_t) ftdm_buffer_read(ftdm_buffer_t *buffer, void *data, ftdm_size_t datalen);
+
+/*! \brief Read data endlessly from a ftdm_buffer_t 
+ * \param buffer any buffer of type ftdm_buffer_t
+ * \param data pointer to the read data to be returned
+ * \param datalen amount of data to be returned
+ * \return int ammount of data actually read
+ * \note Once you have read all the data from the buffer it will loop around.
+ */
+FT_DECLARE(ftdm_size_t) ftdm_buffer_read_loop(ftdm_buffer_t *buffer, void *data, ftdm_size_t datalen);
+
+/*! \brief Assign a number of loops to read
+ * \param buffer any buffer of type ftdm_buffer_t
+ * \param loops the number of loops (-1 for infinite)
+ */
+FT_DECLARE(void) ftdm_buffer_set_loops(ftdm_buffer_t *buffer, int32_t loops);
+
+/*! \brief Write data into a ftdm_buffer_t up to the length of datalen
+ * \param buffer any buffer of type ftdm_buffer_t
+ * \param data pointer to the data to be written
+ * \param datalen amount of data to be written
+ * \return int amount of buffer used after the write, or 0 if no space available
+ */
+FT_DECLARE(ftdm_size_t) ftdm_buffer_write(ftdm_buffer_t *buffer, const void *data, ftdm_size_t datalen);
+
+/*! \brief Remove data from the buffer
+ * \param buffer any buffer of type ftdm_buffer_t
+ * \param datalen amount of data to be removed
+ * \return int size of buffer, or 0 if unable to toss that much data
+ */
+FT_DECLARE(ftdm_size_t) ftdm_buffer_toss(ftdm_buffer_t *buffer, ftdm_size_t datalen);
+
+/*! \brief Remove all data from the buffer
+ * \param buffer any buffer of type ftdm_buffer_t
+ */
+FT_DECLARE(void) ftdm_buffer_zero(ftdm_buffer_t *buffer);
+
+/*! \brief Destroy the buffer
+ * \param buffer buffer to destroy
+ * \note only neccessary on dynamic buffers (noop on pooled ones)
+ */
+FT_DECLARE(void) ftdm_buffer_destroy(ftdm_buffer_t **buffer);
+
+/*! \brief Seek to offset from the beginning of the buffer
+ * \param buffer buffer to seek
+ * \param datalen offset in bytes
+ * \return new position
+ */
+FT_DECLARE(ftdm_size_t) ftdm_buffer_seek(ftdm_buffer_t *buffer, ftdm_size_t datalen);
+
+/** @} */
+
+FT_DECLARE(ftdm_size_t) ftdm_buffer_zwrite(ftdm_buffer_t *buffer, const void *data, ftdm_size_t datalen);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
+ */
diff --git a/libs/freetdm/src/include/ftdm_config.h b/libs/freetdm/src/include/ftdm_config.h
new file mode 100644
index 0000000000..0f96a8f872
--- /dev/null
+++ b/libs/freetdm/src/include/ftdm_config.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2007, Anthony Minessale II
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ * 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @defgroup config Config File Parser
+ * @ingroup config
+ * This module implements a basic interface and file format parser
+ * 
+ * <pre>
+ *
+ * EXAMPLE 
+ * 
+ * [category1]
+ * var1 => val1
+ * var2 => val2
+ * \# lines that begin with \# are comments
+ * \#var3 => val3
+ * </pre>
+ * @{
+ */
+
+#ifndef FTDM_CONFIG_H
+#define FTDM_CONFIG_H
+
+#include "freetdm.h"
+#define FTDM_URL_SEPARATOR "://"
+
+
+#ifdef WIN32
+#define FTDM_PATH_SEPARATOR "\\"
+#ifndef FTDM_CONFIG_DIR
+#define FTDM_CONFIG_DIR "c:\\freetdm"
+#endif
+#define ftdm_is_file_path(file) (*(file +1) == ':' || *file == '/' || strstr(file, SWITCH_URL_SEPARATOR))
+#else
+#define FTDM_PATH_SEPARATOR "/"
+#ifndef FTDM_CONFIG_DIR
+#define FTDM_CONFIG_DIR "/etc/freetdm"
+#endif
+#define ftdm_is_file_path(file) ((*file == '/') || strstr(file, SWITCH_URL_SEPARATOR))
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct ftdm_config ftdm_config_t;
+
+/*! \brief A simple file handle representing an open configuration file **/
+struct ftdm_config {
+	/*! FILE stream buffer to the opened file */
+	FILE *file;
+	/*! path to the file */
+	char path[512];
+	/*! current category */
+	char category[256];
+	/*! current section */
+	char section[256];
+	/*! buffer of current line being read */
+	char buf[1024];
+	/*! current line number in file */
+	int lineno;
+	/*! current category number in file */
+	int catno;
+	/*! current section number in file */
+	int sectno;
+
+	int lockto;
+};
+
+/*!
+  \brief Open a configuration file
+  \param cfg (ftdm_config_t *) config handle to use
+  \param file_path path to the file
+  \return 1 (true) on success 0 (false) on failure
+*/
+int ftdm_config_open_file(ftdm_config_t * cfg, const char *file_path);
+
+/*!
+  \brief Close a previously opened configuration file
+  \param cfg (ftdm_config_t *) config handle to use
+*/
+void ftdm_config_close_file(ftdm_config_t * cfg);
+
+/*!
+  \brief Retrieve next name/value pair from configuration file
+  \param cfg (ftdm_config_t *) config handle to use
+  \param var pointer to aim at the new variable name
+  \param val pointer to aim at the new value
+*/
+int ftdm_config_next_pair(ftdm_config_t * cfg, char **var, char **val);
+
+/*!
+  \brief Retrieve the CAS bits from a configuration string value
+  \param strvalue pointer to the configuration string value (expected to be in format whatever:xxxx)
+  \param outbits pointer to aim at the CAS bits
+*/
+FT_DECLARE (int) ftdm_config_get_cas_bits(char *strvalue, unsigned char *outbits);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+#endif
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
+ */
diff --git a/libs/freetdm/src/include/ftdm_dso.h b/libs/freetdm/src/include/ftdm_dso.h
new file mode 100644
index 0000000000..c4c4b705d1
--- /dev/null
+++ b/libs/freetdm/src/include/ftdm_dso.h
@@ -0,0 +1,51 @@
+/* 
+ * Cross Platform dso/dll load abstraction
+ * Copyright(C) 2008 Michael Jerris
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so.
+ *
+ * This work is provided under this license on an "as is" basis, without warranty of any kind,
+ * either expressed or implied, including, without limitation, warranties that the covered code
+ * is free of defects, merchantable, fit for a particular purpose or non-infringing. The entire
+ * risk as to the quality and performance of the covered code is with you. Should any covered
+ * code prove defective in any respect, you (not the initial developer or any other contributor)
+ * assume the cost of any necessary servicing, repair or correction. This disclaimer of warranty
+ * constitutes an essential part of this license. No use of any covered code is authorized hereunder
+ * except under this disclaimer. 
+ *
+ */
+
+
+#ifndef _FTDM_DSO_H
+#define _FTDM_DSO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void (*ftdm_func_ptr_t) (void);
+typedef void * ftdm_dso_lib_t;
+
+FT_DECLARE(void) ftdm_dso_destroy(ftdm_dso_lib_t *lib);
+FT_DECLARE(ftdm_dso_lib_t) ftdm_dso_open(const char *path, char **err);
+FT_DECLARE(void *) ftdm_dso_func_sym(ftdm_dso_lib_t lib, const char *sym, char **err);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4
+ */
+
diff --git a/libs/freetdm/src/include/ftdm_m3ua.h b/libs/freetdm/src/include/ftdm_m3ua.h
new file mode 100644
index 0000000000..ae2abb5022
--- /dev/null
+++ b/libs/freetdm/src/include/ftdm_m3ua.h
@@ -0,0 +1,134 @@
+/*
+ *  ftdm_m3ua.h
+ *  freetdm
+ *
+ *  Created by Shane Burrell on 4/3/08.
+ *  Copyright 2008 Shane Burrell. All rights reserved.
+ *
+ * Copyright (c) 2007, Anthony Minessale II, Nenad Corbic
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ * 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+//#include "m3ua_client.h"
+#include "freetdm.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+enum	e_sigboost_event_id_values
+{
+	SIGBOOST_EVENT_CALL_START			= 0x80, /*128*/
+	SIGBOOST_EVENT_CALL_START_ACK			= 0x81, /*129*/
+	SIGBOOST_EVENT_CALL_START_NACK			= 0x82, /*130*/
+	SIGBOOST_EVENT_CALL_START_NACK_ACK		= 0x83, /*131*/
+	SIGBOOST_EVENT_CALL_ANSWERED			= 0x84, /*132*/
+	SIGBOOST_EVENT_CALL_STOPPED			= 0x85, /*133*/
+	SIGBOOST_EVENT_CALL_STOPPED_ACK			= 0x86, /*134*/
+	SIGBOOST_EVENT_SYSTEM_RESTART			= 0x87, /*135*/
+	SIGBOOST_EVENT_SYSTEM_RESTART_ACK		= 0x88, /*136*/
+	/* Following IDs are ss7boost to sangoma_mgd only. */
+	SIGBOOST_EVENT_HEARTBEAT			= 0x89, /*137*/
+	SIGBOOST_EVENT_INSERT_CHECK_LOOP		= 0x8a, /*138*/
+	SIGBOOST_EVENT_REMOVE_CHECK_LOOP		= 0x8b, /*139*/
+	SIGBOOST_EVENT_AUTO_CALL_GAP_ABATE		= 0x8c, /*140*/
+};
+enum	e_sigboost_release_cause_values
+{
+	SIGBOOST_RELEASE_CAUSE_UNDEFINED		= 0,
+	SIGBOOST_RELEASE_CAUSE_NORMAL			= 16,
+	SIGBOOST_RELEASE_CAUSE_BUSY			= 17,
+	/* probable elimination */
+	//SIGBOOST_RELEASE_CAUSE_BUSY			= 0x91, /* 145 */
+	//SIGBOOST_RELEASE_CAUSE_CALLED_NOT_EXIST	= 0x92, /* 146 */
+	//SIGBOOST_RELEASE_CAUSE_CIRCUIT_RESET		= 0x93, /* 147 */
+	//SIGBOOST_RELEASE_CAUSE_NOANSWER		= 0x94, /* 148 */
+};
+
+enum	e_sigboost_call_setup_ack_nack_cause_values
+{
+	SIGBOOST_CALL_SETUP_NACK_ALL_CKTS_BUSY		= 117, /* unused Q.850 value */
+	SIGBOOST_CALL_SETUP_NACK_TEST_CKT_BUSY		= 118, /* unused Q.850 value */
+	SIGBOOST_CALL_SETUP_NACK_INVALID_NUMBER		= 28,
+	/* probable elimination */
+	//SIGBOOST_CALL_SETUP_RESERVED			= 0x00,
+	//SIGBOOST_CALL_SETUP_CIRCUIT_RESET		= 0x10,
+	//SIGBOOST_CALL_SETUP_NACK_CKT_START_TIMEOUT	= 0x11,
+	//SIGBOOST_CALL_SETUP_NACK_AUTO_CALL_GAP	= 0x17,
+};
+typedef enum {
+	M3UA_SPAN_SIGNALING_M3UA,
+	M3UA_SPAN_SIGNALING_SS7BOX,
+	
+} M3UA_TSpanSignaling;
+#define M3UA_SPAN_STRINGS "M3UA", "SS7BOX"
+FTDM_STR2ENUM_P(m3ua_str2span, m3ua_span2str, M3UA_TSpanSignaling)
+
+
+
+typedef enum {
+	FTDM_M3UA_RUNNING = (1 << 0)
+} ftdm_m3uat_flag_t;
+
+/*typedef struct m3ua_data {
+	m3uac_connection_t mcon;
+	m3uac_connection_t pcon;
+	zio_signal_cb_t signal_cb;
+	uint32_t flags;
+} m3ua_data_t;
+
+*/
+/*typedef struct mu3a_link {
+	ss7bc_connection_t mcon;
+	ss7bc_connection_t pcon;
+	zio_signal_cb_t signal_cb;
+	uint32_t flags;
+} ftdm_m3ua_data_t;
+*/
+
+ftdm_status_t m3ua_init(ftdm_io_interface_t **zint);
+ftdm_status_t m3ua_destroy(void);
+ftdm_status_t m3ua_start(ftdm_span_t *span);
+
+#ifdef __cplusplus
+}
+#endif
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
+ */
+
diff --git a/libs/freetdm/src/include/ftdm_threadmutex.h b/libs/freetdm/src/include/ftdm_threadmutex.h
new file mode 100644
index 0000000000..a970eda522
--- /dev/null
+++ b/libs/freetdm/src/include/ftdm_threadmutex.h
@@ -0,0 +1,67 @@
+/* 
+ * Cross Platform Thread/Mutex abstraction
+ * Copyright(C) 2007 Michael Jerris
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so.
+ *
+ * This work is provided under this license on an "as is" basis, without warranty of any kind,
+ * either expressed or implied, including, without limitation, warranties that the covered code
+ * is free of defects, merchantable, fit for a particular purpose or non-infringing. The entire
+ * risk as to the quality and performance of the covered code is with you. Should any covered
+ * code prove defective in any respect, you (not the initial developer or any other contributor)
+ * assume the cost of any necessary servicing, repair or correction. This disclaimer of warranty
+ * constitutes an essential part of this license. No use of any covered code is authorized hereunder
+ * except under this disclaimer. 
+ *
+ * Contributors: 
+ *
+ * Moises Silva <moy@sangoma.com>
+ *
+ */
+
+
+#ifndef _FTDM_THREADMUTEX_H
+#define _FTDM_THREADMUTEX_H
+
+#include "freetdm.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+typedef struct ftdm_mutex ftdm_mutex_t;
+typedef struct ftdm_thread ftdm_thread_t;
+typedef struct ftdm_condition ftdm_condition_t;
+typedef void *(*ftdm_thread_function_t) (ftdm_thread_t *, void *);
+
+FT_DECLARE(ftdm_status_t) ftdm_thread_create_detached(ftdm_thread_function_t func, void *data);
+FT_DECLARE(ftdm_status_t) ftdm_thread_create_detached_ex(ftdm_thread_function_t func, void *data, ftdm_size_t stack_size);
+FT_DECLARE(void) ftdm_thread_override_default_stacksize(ftdm_size_t size);
+FT_DECLARE(ftdm_status_t) ftdm_mutex_create(ftdm_mutex_t **mutex);
+FT_DECLARE(ftdm_status_t) ftdm_mutex_destroy(ftdm_mutex_t **mutex);
+FT_DECLARE(ftdm_status_t) _ftdm_mutex_lock(ftdm_mutex_t *mutex);
+FT_DECLARE(ftdm_status_t) _ftdm_mutex_trylock(ftdm_mutex_t *mutex);
+FT_DECLARE(ftdm_status_t) _ftdm_mutex_unlock(ftdm_mutex_t *mutex);
+FT_DECLARE(ftdm_status_t) ftdm_condition_create(ftdm_condition_t **cond, ftdm_mutex_t *mutex);
+FT_DECLARE(ftdm_status_t) ftdm_condition_destroy(ftdm_condition_t **cond);
+FT_DECLARE(ftdm_status_t) ftdm_condition_signal(ftdm_condition_t *cond);
+FT_DECLARE(ftdm_status_t) ftdm_condition_wait(ftdm_condition_t *cond, int ms);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
+ */
+
diff --git a/libs/freetdm/src/include/ftdm_types.h b/libs/freetdm/src/include/ftdm_types.h
new file mode 100644
index 0000000000..680ba0feb4
--- /dev/null
+++ b/libs/freetdm/src/include/ftdm_types.h
@@ -0,0 +1,703 @@
+/*
+ * Copyright (c) 2007, Anthony Minessale II
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ * 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Contributors: 
+ *
+ * Moises Silva <moy@sangoma.com>
+ *
+ */
+
+#ifndef FTDM_TYPES_H
+#define FTDM_TYPES_H
+#include "fsk.h"
+
+#ifdef WIN32
+#include <windows.h>
+typedef HANDLE ftdm_socket_t;
+typedef unsigned __int64 uint64_t;
+typedef unsigned __int32 uint32_t;
+typedef unsigned __int16 uint16_t;
+typedef unsigned __int8 uint8_t;
+typedef __int64 int64_t;
+typedef __int32 int32_t;
+typedef __int16 int16_t;
+typedef __int8 int8_t;
+typedef intptr_t ftdm_ssize_t;
+typedef int ftdm_filehandle_t;
+#else
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <stdarg.h>
+typedef int ftdm_socket_t;
+typedef ssize_t ftdm_ssize_t;
+typedef int ftdm_filehandle_t;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#define TAG_END NULL
+
+typedef size_t ftdm_size_t;
+struct ftdm_io_interface;
+
+#define FTDM_COMMAND_OBJ_INT *((int *)obj)
+#define FTDM_COMMAND_OBJ_CHAR_P (char *)obj
+#define FTDM_COMMAND_OBJ_FLOAT *(float *)obj
+#define FTDM_FSK_MOD_FACTOR 0x10000
+#define FTDM_DEFAULT_DTMF_ON 250
+#define FTDM_DEFAULT_DTMF_OFF 50
+
+#define FTDM_END -1
+#define FTDM_ANY_STATE -1
+
+typedef uint64_t ftdm_time_t; 
+
+typedef enum {
+	FTDM_ENDIAN_BIG = 1,
+	FTDM_ENDIAN_LITTLE = -1
+} ftdm_endian_t;
+
+typedef enum {
+	FTDM_CID_TYPE_SDMF = 0x04,
+	FTDM_CID_TYPE_MDMF = 0x80
+} ftdm_cid_type_t;
+
+typedef enum {
+	MDMF_DATETIME = 1,
+	MDMF_PHONE_NUM = 2,
+	MDMF_DDN = 3,
+	MDMF_NO_NUM = 4,
+	MDMF_PHONE_NAME = 7,
+	MDMF_NO_NAME = 8,
+	MDMF_ALT_ROUTE = 9,
+	MDMF_INVALID = 10
+} ftdm_mdmf_type_t;
+#define MDMF_STRINGS "X", "DATETIME", "PHONE_NUM", "DDN", "NO_NUM", "X", "X", "PHONE_NAME", "NO_NAME", "ALT_ROUTE", "INVALID"
+FTDM_STR2ENUM_P(ftdm_str2ftdm_mdmf_type, ftdm_mdmf_type2str, ftdm_mdmf_type_t)
+
+#define FTDM_TONEMAP_LEN 128
+typedef enum {
+	FTDM_TONEMAP_NONE,
+	FTDM_TONEMAP_DIAL,
+	FTDM_TONEMAP_RING,
+	FTDM_TONEMAP_BUSY,
+	FTDM_TONEMAP_FAIL1,
+	FTDM_TONEMAP_FAIL2,
+	FTDM_TONEMAP_FAIL3,
+	FTDM_TONEMAP_ATTN,
+	FTDM_TONEMAP_CALLWAITING_CAS,
+	FTDM_TONEMAP_CALLWAITING_SAS,
+	FTDM_TONEMAP_CALLWAITING_ACK,
+	FTDM_TONEMAP_INVALID
+} ftdm_tonemap_t;
+#define TONEMAP_STRINGS "NONE", "DIAL", "RING", "BUSY", "FAIL1", "FAIL2", "FAIL3", "ATTN", "CALLWAITING-CAS", "CALLWAITING-SAS", "CALLWAITING-ACK", "INVALID"
+FTDM_STR2ENUM_P(ftdm_str2ftdm_tonemap, ftdm_tonemap2str, ftdm_tonemap_t)
+
+typedef enum {
+	FTDM_TRUNK_E1,
+	FTDM_TRUNK_T1,
+	FTDM_TRUNK_J1,
+	FTDM_TRUNK_BRI,
+	FTDM_TRUNK_BRI_PTMP,
+	FTDM_TRUNK_FXO,
+	FTDM_TRUNK_FXS,
+	FTDM_TRUNK_EM,
+	FTDM_TRUNK_NONE
+} ftdm_trunk_type_t;
+#define TRUNK_STRINGS "E1", "T1", "J1", "BRI", "BRI_PTMP", "FXO", "FXS", "EM", "NONE"
+FTDM_STR2ENUM_P(ftdm_str2ftdm_trunk_type, ftdm_trunk_type2str, ftdm_trunk_type_t)
+
+typedef enum {
+	FTDM_ANALOG_START_KEWL,
+	FTDM_ANALOG_START_LOOP,
+	FTDM_ANALOG_START_GROUND,
+	FTDM_ANALOG_START_WINK,
+	FTDM_ANALOG_START_NA
+} ftdm_analog_start_type_t;
+#define START_TYPE_STRINGS "KEWL", "LOOP", "GROUND", "WINK", "NA"
+FTDM_STR2ENUM_P(ftdm_str2ftdm_analog_start_type, ftdm_analog_start_type2str, ftdm_analog_start_type_t)
+
+typedef enum {
+	FTDM_OOB_ONHOOK,
+	FTDM_OOB_OFFHOOK,
+	FTDM_OOB_WINK,
+	FTDM_OOB_FLASH,
+	FTDM_OOB_RING_START,
+	FTDM_OOB_RING_STOP,
+	FTDM_OOB_ALARM_TRAP,
+	FTDM_OOB_ALARM_CLEAR,
+	FTDM_OOB_NOOP,
+	FTDM_OOB_CAS_BITS_CHANGE,
+	FTDM_OOB_INVALID
+} ftdm_oob_event_t;
+#define OOB_STRINGS "DTMF", "ONHOOK", "OFFHOOK", "WINK", "FLASH", "RING_START", "RING_STOP", "ALARM_TRAP", "ALARM_CLEAR", "NOOP", "CAS_BITS_CHANGE", "INVALID"
+FTDM_STR2ENUM_P(ftdm_str2ftdm_oob_event, ftdm_oob_event2str, ftdm_oob_event_t)
+
+typedef enum {
+	FTDM_ALARM_NONE = 0,
+	FTDM_ALARM_RECOVER = (1 << 0),
+	FTDM_ALARM_LOOPBACK = (1 << 2),
+	FTDM_ALARM_YELLOW = (1 << 3),
+	FTDM_ALARM_RED = (1 << 4),
+	FTDM_ALARM_BLUE = (1 << 5),
+	FTDM_ALARM_NOTOPEN = ( 1 << 6),
+	FTDM_ALARM_AIS = ( 1 << 7),
+	FTDM_ALARM_RAI = ( 1 << 8),
+	FTDM_ALARM_GENERAL = ( 1 << 30)
+} ftdm_alarm_flag_t;
+
+typedef enum {
+	FTDM_SIGTYPE_NONE,
+	FTDM_SIGTYPE_ISDN,
+	FTDM_SIGTYPE_RBS,
+	FTDM_SIGTYPE_ANALOG,
+	FTDM_SIGTYPE_SANGOMABOOST,
+	FTDM_SIGTYPE_M3UA,
+	FTDM_SIGTYPE_R2
+} ftdm_signal_type_t;
+
+/*!
+  \brief Signaling status on a given span or specific channel on protocols that support it
+ */
+typedef enum {
+	/* The signaling link is down (no d-chans up in the span/group, MFC-R2 bit pattern unidentified) */
+	FTDM_SIG_STATE_DOWN,
+	/* The signaling link is suspended (MFC-R2 bit pattern blocked, ss7 blocked?) */
+	FTDM_SIG_STATE_SUSPENDED,
+	/* The signaling link is ready and calls can be placed */
+	FTDM_SIG_STATE_UP,
+	/* Invalid status */
+	FTDM_SIG_STATE_INVALID
+} ftdm_signaling_status_t;
+#define SIGSTATUS_STRINGS "DOWN", "SUSPENDED", "UP", "INVALID"
+FTDM_STR2ENUM_P(ftdm_str2ftdm_signaling_status, ftdm_signaling_status2str, ftdm_signaling_status_t)
+
+typedef enum {
+	FTDM_SIGEVENT_START,
+	FTDM_SIGEVENT_STOP,
+	FTDM_SIGEVENT_TRANSFER,
+	FTDM_SIGEVENT_ANSWER,
+	FTDM_SIGEVENT_UP,
+	FTDM_SIGEVENT_FLASH,
+	FTDM_SIGEVENT_PROGRESS,
+	FTDM_SIGEVENT_PROGRESS_MEDIA,
+	FTDM_SIGEVENT_NOTIFY,
+	FTDM_SIGEVENT_TONE_DETECTED,
+	FTDM_SIGEVENT_ALARM_TRAP,
+	FTDM_SIGEVENT_ALARM_CLEAR,
+	FTDM_SIGEVENT_MISC,
+	FTDM_SIGEVENT_COLLECTED_DIGIT,
+	FTDM_SIGEVENT_ADD_CALL,
+	FTDM_SIGEVENT_RESTART,
+	/* Signaling link status changed (D-chan up, down, R2 blocked etc) */
+	FTDM_SIGEVENT_SIGSTATUS_CHANGED,
+	/* Hardware link status changed (Line connected, disconnected) */
+	FTDM_SIGEVENT_HWSTATUS_CHANGED,
+	FTDM_SIGEVENT_INVALID
+} ftdm_signal_event_t;
+#define SIGNAL_STRINGS "START", "STOP", "TRANSFER", "ANSWER", "UP", "FLASH", "PROGRESS", \
+		"PROGRESS_MEDIA", "NOTIFY", "TONE_DETECTED", "ALARM_TRAP", "ALARM_CLEAR", "MISC", \
+		"COLLECTED_DIGIT", "ADD_CALL", "RESTART", "SIGLINK_CHANGED", "HWSTATUS_CHANGED", "INVALID"
+FTDM_STR2ENUM_P(ftdm_str2ftdm_signal_event, ftdm_signal_event2str, ftdm_signal_event_t)
+
+typedef enum {
+	FTDM_EVENT_NONE,
+	FTDM_EVENT_DTMF,
+	FTDM_EVENT_OOB,
+	FTDM_EVENT_COUNT
+} ftdm_event_type_t;
+
+typedef enum {
+	FTDM_TOP_DOWN,
+	FTDM_BOTTOM_UP
+} ftdm_direction_t;
+
+typedef enum {
+	FTDM_SUCCESS,
+	FTDM_FAIL,
+	FTDM_MEMERR,
+	FTDM_TIMEOUT,
+	FTDM_NOTIMPL,
+	FTDM_CHECKSUM_ERROR,
+	FTDM_STATUS_COUNT,
+	FTDM_BREAK
+} ftdm_status_t;
+
+typedef enum {
+	FTDM_NO_FLAGS = 0,
+	FTDM_READ =  (1 << 0),
+	FTDM_WRITE = (1 << 1),
+	FTDM_EVENTS = (1 << 2)
+} ftdm_wait_flag_t;
+
+typedef enum {
+	FTDM_CODEC_ULAW = 0,
+	FTDM_CODEC_ALAW = 8,
+	FTDM_CODEC_SLIN = 10,
+	FTDM_CODEC_NONE = (1 << 30)
+} ftdm_codec_t;
+
+typedef enum {
+	FTDM_TONE_DTMF = (1 << 0)
+} ftdm_tone_type_t;
+
+typedef enum {
+	FTDM_COMMAND_NOOP,
+	FTDM_COMMAND_SET_INTERVAL,
+	FTDM_COMMAND_GET_INTERVAL,
+	FTDM_COMMAND_SET_CODEC,
+	FTDM_COMMAND_GET_CODEC,
+	FTDM_COMMAND_SET_NATIVE_CODEC,
+	FTDM_COMMAND_GET_NATIVE_CODEC,
+	FTDM_COMMAND_ENABLE_DTMF_DETECT,
+	FTDM_COMMAND_DISABLE_DTMF_DETECT,
+	FTDM_COMMAND_SEND_DTMF,
+	FTDM_COMMAND_SET_DTMF_ON_PERIOD,
+	FTDM_COMMAND_GET_DTMF_ON_PERIOD,
+	FTDM_COMMAND_SET_DTMF_OFF_PERIOD,
+	FTDM_COMMAND_GET_DTMF_OFF_PERIOD,
+	FTDM_COMMAND_GENERATE_RING_ON,
+	FTDM_COMMAND_GENERATE_RING_OFF,
+	FTDM_COMMAND_OFFHOOK,
+	FTDM_COMMAND_ONHOOK,
+	FTDM_COMMAND_FLASH,
+	FTDM_COMMAND_WINK,
+	FTDM_COMMAND_ENABLE_PROGRESS_DETECT,
+	FTDM_COMMAND_DISABLE_PROGRESS_DETECT,
+	FTDM_COMMAND_TRACE_INPUT,
+	FTDM_COMMAND_TRACE_OUTPUT,
+	FTDM_COMMAND_ENABLE_CALLERID_DETECT,
+	FTDM_COMMAND_DISABLE_CALLERID_DETECT,
+	FTDM_COMMAND_ENABLE_ECHOCANCEL,
+	FTDM_COMMAND_DISABLE_ECHOCANCEL,
+	FTDM_COMMAND_ENABLE_ECHOTRAIN,
+	FTDM_COMMAND_DISABLE_ECHOTRAIN,
+	FTDM_COMMAND_SET_CAS_BITS,
+	FTDM_COMMAND_GET_CAS_BITS,
+	FTDM_COMMAND_SET_RX_GAIN,
+	FTDM_COMMAND_GET_RX_GAIN,
+	FTDM_COMMAND_SET_TX_GAIN,
+	FTDM_COMMAND_GET_TX_GAIN,
+	FTDM_COMMAND_FLUSH_TX_BUFFERS,
+	FTDM_COMMAND_FLUSH_RX_BUFFERS,
+	FTDM_COMMAND_FLUSH_BUFFERS,
+	FTDM_COMMAND_SET_PRE_BUFFER_SIZE,
+	FTDM_COMMAND_SET_LINK_STATUS,
+	FTDM_COMMAND_GET_LINK_STATUS,
+	FTDM_COMMAND_COUNT
+} ftdm_command_t;
+
+typedef enum {
+	FTDM_SPAN_CONFIGURED = (1 << 0),
+	FTDM_SPAN_READY = (1 << 1),
+	FTDM_SPAN_STATE_CHANGE = (1 << 2),
+	FTDM_SPAN_SUSPENDED = (1 << 3),
+	FTDM_SPAN_IN_THREAD = (1 << 4),
+	FTDM_SPAN_STOP_THREAD = (1 << 5)
+} ftdm_span_flag_t;
+
+typedef enum {
+	FTDM_CHAN_TYPE_B,
+	FTDM_CHAN_TYPE_DQ921,
+	FTDM_CHAN_TYPE_DQ931,
+	FTDM_CHAN_TYPE_FXS,
+	FTDM_CHAN_TYPE_FXO,
+	FTDM_CHAN_TYPE_EM,
+	FTDM_CHAN_TYPE_CAS,
+	FTDM_CHAN_TYPE_COUNT
+} ftdm_chan_type_t;
+
+#define CHAN_TYPE_STRINGS "B", "DQ921", "DQ931", "FXS", "FXO", "EM", "CAS", "INVALID"
+FTDM_STR2ENUM_P(ftdm_str2ftdm_chan_type, ftdm_chan_type2str, ftdm_chan_type_t)
+
+typedef enum {
+	FTDM_CHANNEL_FEATURE_DTMF_DETECT = (1 << 0),
+	FTDM_CHANNEL_FEATURE_DTMF_GENERATE = (1 << 1),
+	FTDM_CHANNEL_FEATURE_CODECS = (1 << 2),
+	FTDM_CHANNEL_FEATURE_INTERVAL = (1 << 3),
+	FTDM_CHANNEL_FEATURE_CALLERID = (1 << 4),
+	FTDM_CHANNEL_FEATURE_PROGRESS = (1 << 5)
+} ftdm_channel_feature_t;
+
+typedef enum {
+	FTDM_CHANNEL_STATE_DOWN,
+	FTDM_CHANNEL_STATE_HOLD,
+	FTDM_CHANNEL_STATE_SUSPENDED,
+	FTDM_CHANNEL_STATE_DIALTONE,
+	FTDM_CHANNEL_STATE_COLLECT,
+	FTDM_CHANNEL_STATE_RING,
+	FTDM_CHANNEL_STATE_BUSY,
+	FTDM_CHANNEL_STATE_ATTN,
+	FTDM_CHANNEL_STATE_GENRING,
+	FTDM_CHANNEL_STATE_DIALING,
+	FTDM_CHANNEL_STATE_GET_CALLERID,
+	FTDM_CHANNEL_STATE_CALLWAITING,
+	FTDM_CHANNEL_STATE_RESTART,
+	FTDM_CHANNEL_STATE_PROGRESS,
+	FTDM_CHANNEL_STATE_PROGRESS_MEDIA,
+	FTDM_CHANNEL_STATE_UP,
+	FTDM_CHANNEL_STATE_IDLE,
+	FTDM_CHANNEL_STATE_TERMINATING,
+	FTDM_CHANNEL_STATE_CANCEL,
+	FTDM_CHANNEL_STATE_HANGUP,
+	FTDM_CHANNEL_STATE_HANGUP_COMPLETE,
+	FTDM_CHANNEL_STATE_INVALID
+} ftdm_channel_state_t;
+#define CHANNEL_STATE_STRINGS "DOWN", "HOLD", "SUSPENDED", "DIALTONE", "COLLECT", \
+		"RING", "BUSY", "ATTN", "GENRING", "DIALING", "GET_CALLERID", "CALLWAITING", \
+		"RESTART", "PROGRESS", "PROGRESS_MEDIA", "UP", "IDLE", "TERMINATING", "CANCEL", "HANGUP", "HANGUP_COMPLETE", "INVALID"
+FTDM_STR2ENUM_P(ftdm_str2ftdm_channel_state, ftdm_channel_state2str, ftdm_channel_state_t)
+
+typedef enum {
+	FTDM_CHANNEL_CONFIGURED = (1 << 0),
+	FTDM_CHANNEL_READY = (1 << 1),
+	FTDM_CHANNEL_OPEN = (1 << 2),
+	FTDM_CHANNEL_DTMF_DETECT = (1 << 3),
+	FTDM_CHANNEL_SUPRESS_DTMF = (1 << 4),
+	FTDM_CHANNEL_TRANSCODE = (1 << 5),
+	FTDM_CHANNEL_BUFFER = (1 << 6),
+	FTDM_CHANNEL_EVENT = (1 << 7),
+	FTDM_CHANNEL_INTHREAD = (1 << 8),
+	FTDM_CHANNEL_WINK = (1 << 9),
+	FTDM_CHANNEL_FLASH = (1 << 10),
+	FTDM_CHANNEL_STATE_CHANGE = (1 << 11),
+	FTDM_CHANNEL_HOLD = (1 << 12),
+	FTDM_CHANNEL_INUSE = (1 << 13),
+	FTDM_CHANNEL_OFFHOOK = (1 << 14),
+	FTDM_CHANNEL_RINGING = (1 << 15),
+	FTDM_CHANNEL_PROGRESS_DETECT = (1 << 16),
+	FTDM_CHANNEL_CALLERID_DETECT = (1 << 17),
+	FTDM_CHANNEL_OUTBOUND = (1 << 18),
+	FTDM_CHANNEL_SUSPENDED = (1 << 19),
+	FTDM_CHANNEL_3WAY = (1 << 20),
+	FTDM_CHANNEL_PROGRESS = (1 << 21),
+	FTDM_CHANNEL_MEDIA = (1 << 22),
+	FTDM_CHANNEL_ANSWERED = (1 << 23),
+	FTDM_CHANNEL_MUTE = (1 << 24),
+	FTDM_CHANNEL_USE_RX_GAIN = (1 << 25),
+	FTDM_CHANNEL_USE_TX_GAIN = (1 << 26),
+} ftdm_channel_flag_t;
+#if defined(__cplusplus) && defined(WIN32) 
+    // fix C2676 
+__inline__ ftdm_channel_flag_t operator|=(ftdm_channel_flag_t a, int32_t b) {
+    a = (ftdm_channel_flag_t)(a | b);
+    return a;
+}
+__inline__ ftdm_channel_flag_t operator&=(ftdm_channel_flag_t a, int32_t b) {
+    a = (ftdm_channel_flag_t)(a & b);
+    return a;
+}
+#endif
+
+typedef enum {
+	ZSM_NONE,
+	ZSM_UNACCEPTABLE,
+	ZSM_ACCEPTABLE
+} ftdm_state_map_type_t;
+
+typedef enum {
+	ZSD_INBOUND,
+	ZSD_OUTBOUND,
+} ftdm_state_direction_t;
+
+#define FTDM_MAP_NODE_SIZE 512
+#define FTDM_MAP_MAX FTDM_CHANNEL_STATE_INVALID+2
+
+struct ftdm_state_map_node {
+	ftdm_state_direction_t direction;
+	ftdm_state_map_type_t type;
+	ftdm_channel_state_t check_states[FTDM_MAP_MAX];
+	ftdm_channel_state_t states[FTDM_MAP_MAX];
+};
+typedef struct ftdm_state_map_node ftdm_state_map_node_t;
+
+struct ftdm_state_map {
+	ftdm_state_map_node_t nodes[FTDM_MAP_NODE_SIZE];
+};
+typedef struct ftdm_state_map ftdm_state_map_t;
+
+typedef enum ftdm_channel_hw_link_status {
+	FTDM_HW_LINK_DISCONNECTED = 0,
+	FTDM_HW_LINK_CONNECTED
+} ftdm_channel_hw_link_status_t;
+
+typedef struct ftdm_conf_parameter_s {
+	const char *var;
+	const char *val;
+} ftdm_conf_parameter_t;
+
+typedef struct ftdm_channel ftdm_channel_t;
+typedef struct ftdm_event ftdm_event_t;
+typedef struct ftdm_sigmsg ftdm_sigmsg_t;
+typedef struct ftdm_span ftdm_span_t;
+typedef struct ftdm_group ftdm_group_t;
+typedef struct ftdm_caller_data ftdm_caller_data_t;
+typedef struct ftdm_io_interface ftdm_io_interface_t;
+
+struct ftdm_stream_handle;
+typedef struct ftdm_stream_handle ftdm_stream_handle_t;
+
+typedef ftdm_status_t (*ftdm_stream_handle_raw_write_function_t) (ftdm_stream_handle_t *handle, uint8_t *data, ftdm_size_t datalen);
+typedef ftdm_status_t (*ftdm_stream_handle_write_function_t) (ftdm_stream_handle_t *handle, const char *fmt, ...);
+
+#define ZIO_CHANNEL_REQUEST_ARGS (ftdm_span_t *span, uint32_t chan_id, ftdm_direction_t direction, ftdm_caller_data_t *caller_data, ftdm_channel_t **ftdmchan)
+#define ZIO_CHANNEL_OUTGOING_CALL_ARGS (ftdm_channel_t *ftdmchan)
+#define ZIO_CHANNEL_SET_SIG_STATUS_ARGS (ftdm_channel_t *ftdmchan, ftdm_signaling_status_t status)
+#define ZIO_CHANNEL_GET_SIG_STATUS_ARGS (ftdm_channel_t *ftdmchan, ftdm_signaling_status_t *status)
+#define ZIO_SPAN_SET_SIG_STATUS_ARGS (ftdm_span_t *span, ftdm_signaling_status_t status)
+#define ZIO_SPAN_GET_SIG_STATUS_ARGS (ftdm_span_t *span, ftdm_signaling_status_t *status)
+#define ZIO_SPAN_POLL_EVENT_ARGS (ftdm_span_t *span, uint32_t ms)
+#define ZIO_SPAN_NEXT_EVENT_ARGS (ftdm_span_t *span, ftdm_event_t **event)
+#define ZIO_SIGNAL_CB_ARGS (ftdm_sigmsg_t *sigmsg)
+#define ZIO_EVENT_CB_ARGS (ftdm_channel_t *ftdmchan, ftdm_event_t *event)
+#define ZIO_CODEC_ARGS (void *data, ftdm_size_t max, ftdm_size_t *datalen)
+#define ZIO_CONFIGURE_SPAN_ARGS (ftdm_span_t *span, const char *str, ftdm_chan_type_t type, char *name, char *number)
+#define ZIO_CONFIGURE_ARGS (const char *category, const char *var, const char *val, int lineno)
+#define ZIO_OPEN_ARGS (ftdm_channel_t *ftdmchan)
+#define ZIO_CLOSE_ARGS (ftdm_channel_t *ftdmchan)
+#define ZIO_CHANNEL_DESTROY_ARGS (ftdm_channel_t *ftdmchan)
+#define ZIO_SPAN_DESTROY_ARGS (ftdm_span_t *span)
+#define ZIO_COMMAND_ARGS (ftdm_channel_t *ftdmchan, ftdm_command_t command, void *obj)
+#define ZIO_WAIT_ARGS (ftdm_channel_t *ftdmchan, ftdm_wait_flag_t *flags, int32_t to)
+#define ZIO_GET_ALARMS_ARGS (ftdm_channel_t *ftdmchan)
+#define ZIO_READ_ARGS (ftdm_channel_t *ftdmchan, void *data, ftdm_size_t *datalen)
+#define ZIO_WRITE_ARGS (ftdm_channel_t *ftdmchan, void *data, ftdm_size_t *datalen)
+#define ZIO_IO_LOAD_ARGS (ftdm_io_interface_t **zio)
+#define ZIO_IO_UNLOAD_ARGS (void)
+#define ZIO_SIG_LOAD_ARGS (void)
+#define ZIO_SIG_CONFIGURE_ARGS (ftdm_span_t *span, zio_signal_cb_t sig_cb, va_list ap)
+#define ZIO_CONFIGURE_SPAN_SIGNALING_ARGS (ftdm_span_t *span, zio_signal_cb_t sig_cb, ftdm_conf_parameter_t *ftdm_parameters)
+#define ZIO_SIG_UNLOAD_ARGS (void)
+#define ZIO_API_ARGS (ftdm_stream_handle_t *stream, const char *data)
+
+typedef ftdm_status_t (*zio_channel_request_t) ZIO_CHANNEL_REQUEST_ARGS ;
+typedef ftdm_status_t (*zio_channel_outgoing_call_t) ZIO_CHANNEL_OUTGOING_CALL_ARGS ;
+typedef ftdm_status_t (*zio_channel_set_sig_status_t) ZIO_CHANNEL_SET_SIG_STATUS_ARGS;
+typedef ftdm_status_t (*zio_channel_get_sig_status_t) ZIO_CHANNEL_GET_SIG_STATUS_ARGS;
+typedef ftdm_status_t (*zio_span_set_sig_status_t) ZIO_SPAN_SET_SIG_STATUS_ARGS;
+typedef ftdm_status_t (*zio_span_get_sig_status_t) ZIO_SPAN_GET_SIG_STATUS_ARGS;
+typedef ftdm_status_t (*zio_span_poll_event_t) ZIO_SPAN_POLL_EVENT_ARGS ;
+typedef ftdm_status_t (*zio_span_next_event_t) ZIO_SPAN_NEXT_EVENT_ARGS ;
+typedef ftdm_status_t (*zio_signal_cb_t) ZIO_SIGNAL_CB_ARGS ;
+typedef ftdm_status_t (*zio_event_cb_t) ZIO_EVENT_CB_ARGS ;
+typedef ftdm_status_t (*zio_codec_t) ZIO_CODEC_ARGS ;
+typedef ftdm_status_t (*zio_configure_span_t) ZIO_CONFIGURE_SPAN_ARGS ;
+typedef ftdm_status_t (*zio_configure_t) ZIO_CONFIGURE_ARGS ;
+typedef ftdm_status_t (*zio_open_t) ZIO_OPEN_ARGS ;
+typedef ftdm_status_t (*zio_close_t) ZIO_CLOSE_ARGS ;
+typedef ftdm_status_t (*zio_channel_destroy_t) ZIO_CHANNEL_DESTROY_ARGS ;
+typedef ftdm_status_t (*zio_span_destroy_t) ZIO_SPAN_DESTROY_ARGS ;
+typedef ftdm_status_t (*zio_get_alarms_t) ZIO_GET_ALARMS_ARGS ;
+typedef ftdm_status_t (*zio_command_t) ZIO_COMMAND_ARGS ;
+typedef ftdm_status_t (*zio_wait_t) ZIO_WAIT_ARGS ;
+typedef ftdm_status_t (*zio_read_t) ZIO_READ_ARGS ;
+typedef ftdm_status_t (*zio_write_t) ZIO_WRITE_ARGS ;
+typedef ftdm_status_t (*zio_io_load_t) ZIO_IO_LOAD_ARGS ;
+typedef ftdm_status_t (*zio_sig_load_t) ZIO_SIG_LOAD_ARGS ;
+typedef ftdm_status_t (*zio_sig_configure_t) ZIO_SIG_CONFIGURE_ARGS ;
+typedef ftdm_status_t (*zio_configure_span_signaling_t) ZIO_CONFIGURE_SPAN_SIGNALING_ARGS ;
+typedef ftdm_status_t (*zio_io_unload_t) ZIO_IO_UNLOAD_ARGS ;
+typedef ftdm_status_t (*zio_sig_unload_t) ZIO_SIG_UNLOAD_ARGS ;
+typedef ftdm_status_t (*zio_api_t) ZIO_API_ARGS ;
+
+
+#define ZIO_CHANNEL_REQUEST_FUNCTION(name) ftdm_status_t name ZIO_CHANNEL_REQUEST_ARGS
+#define ZIO_CHANNEL_OUTGOING_CALL_FUNCTION(name) ftdm_status_t name ZIO_CHANNEL_OUTGOING_CALL_ARGS
+#define ZIO_CHANNEL_SET_SIG_STATUS_FUNCTION(name) ftdm_status_t name ZIO_CHANNEL_SET_SIG_STATUS_ARGS
+#define ZIO_CHANNEL_GET_SIG_STATUS_FUNCTION(name) ftdm_status_t name ZIO_CHANNEL_GET_SIG_STATUS_ARGS
+#define ZIO_SPAN_SET_SIG_STATUS_FUNCTION(name) ftdm_status_t name ZIO_SPAN_SET_SIG_STATUS_ARGS
+#define ZIO_SPAN_GET_SIG_STATUS_FUNCTION(name) ftdm_status_t name ZIO_SPAN_GET_SIG_STATUS_ARGS
+#define ZIO_SPAN_POLL_EVENT_FUNCTION(name) ftdm_status_t name ZIO_SPAN_POLL_EVENT_ARGS
+#define ZIO_SPAN_NEXT_EVENT_FUNCTION(name) ftdm_status_t name ZIO_SPAN_NEXT_EVENT_ARGS
+#define ZIO_SIGNAL_CB_FUNCTION(name) ftdm_status_t name ZIO_SIGNAL_CB_ARGS
+#define ZIO_EVENT_CB_FUNCTION(name) ftdm_status_t name ZIO_EVENT_CB_ARGS
+#define ZIO_CODEC_FUNCTION(name) FT_DECLARE_NONSTD(ftdm_status_t) name ZIO_CODEC_ARGS
+#define ZIO_CONFIGURE_SPAN_FUNCTION(name) ftdm_status_t name ZIO_CONFIGURE_SPAN_ARGS
+#define ZIO_CONFIGURE_FUNCTION(name) ftdm_status_t name ZIO_CONFIGURE_ARGS
+#define ZIO_OPEN_FUNCTION(name) ftdm_status_t name ZIO_OPEN_ARGS
+#define ZIO_CLOSE_FUNCTION(name) ftdm_status_t name ZIO_CLOSE_ARGS
+#define ZIO_CHANNEL_DESTROY_FUNCTION(name) ftdm_status_t name ZIO_CHANNEL_DESTROY_ARGS
+#define ZIO_SPAN_DESTROY_FUNCTION(name) ftdm_status_t name ZIO_SPAN_DESTROY_ARGS
+#define ZIO_GET_ALARMS_FUNCTION(name) ftdm_status_t name ZIO_GET_ALARMS_ARGS
+#define ZIO_COMMAND_FUNCTION(name) ftdm_status_t name ZIO_COMMAND_ARGS
+#define ZIO_WAIT_FUNCTION(name) ftdm_status_t name ZIO_WAIT_ARGS
+#define ZIO_READ_FUNCTION(name) ftdm_status_t name ZIO_READ_ARGS
+#define ZIO_WRITE_FUNCTION(name) ftdm_status_t name ZIO_WRITE_ARGS
+#define ZIO_IO_LOAD_FUNCTION(name) ftdm_status_t name ZIO_IO_LOAD_ARGS
+#define ZIO_SIG_LOAD_FUNCTION(name) ftdm_status_t name ZIO_SIG_LOAD_ARGS
+#define ZIO_SIG_CONFIGURE_FUNCTION(name) ftdm_status_t name ZIO_SIG_CONFIGURE_ARGS
+#define ZIO_CONFIGURE_SPAN_SIGNALING_FUNCTION(name) ftdm_status_t name ZIO_CONFIGURE_SPAN_SIGNALING_ARGS
+#define ZIO_IO_UNLOAD_FUNCTION(name) ftdm_status_t name ZIO_IO_UNLOAD_ARGS
+#define ZIO_SIG_UNLOAD_FUNCTION(name) ftdm_status_t name ZIO_SIG_UNLOAD_ARGS
+#define ZIO_API_FUNCTION(name) ftdm_status_t name ZIO_API_ARGS
+
+#include "ftdm_dso.h"
+
+typedef struct {
+	char name[256];
+	zio_io_load_t io_load;
+	zio_io_unload_t io_unload;
+	zio_sig_load_t sig_load;
+	zio_sig_configure_t sig_configure;
+	zio_sig_unload_t sig_unload;
+	/*! 
+	  \brief configure a given span signaling 
+	  \see sig_configure
+	  This is just like sig_configure but receives
+	  an array of paramters instead of va_list
+	  I'd like to deprecate sig_configure and move
+	  all modules to use sigparam_configure
+	 */
+	zio_configure_span_signaling_t configure_span_signaling;
+	ftdm_dso_lib_t lib;
+	char path[256];
+} ftdm_module_t;
+
+#ifndef __FUNCTION__
+#define __FUNCTION__ (const char *)__func__
+#endif
+
+#define FTDM_PRE __FILE__, __FUNCTION__, __LINE__
+#define FTDM_LOG_LEVEL_DEBUG 7
+#define FTDM_LOG_LEVEL_INFO 6
+#define FTDM_LOG_LEVEL_NOTICE 5
+#define FTDM_LOG_LEVEL_WARNING 4
+#define FTDM_LOG_LEVEL_ERROR 3
+#define FTDM_LOG_LEVEL_CRIT 2
+#define FTDM_LOG_LEVEL_ALERT 1
+#define FTDM_LOG_LEVEL_EMERG 0
+
+#define FTDM_LOG_DEBUG FTDM_PRE, FTDM_LOG_LEVEL_DEBUG
+#define FTDM_LOG_INFO FTDM_PRE, FTDM_LOG_LEVEL_INFO
+#define FTDM_LOG_NOTICE FTDM_PRE, FTDM_LOG_LEVEL_NOTICE
+#define FTDM_LOG_WARNING FTDM_PRE, FTDM_LOG_LEVEL_WARNING
+#define FTDM_LOG_ERROR FTDM_PRE, FTDM_LOG_LEVEL_ERROR
+#define FTDM_LOG_CRIT FTDM_PRE, FTDM_LOG_LEVEL_CRIT
+#define FTDM_LOG_ALERT FTDM_PRE, FTDM_LOG_LEVEL_ALERT
+#define FTDM_LOG_EMERG FTDM_PRE, FTDM_LOG_LEVEL_EMERG
+
+typedef struct ftdm_fsk_data_state ftdm_fsk_data_state_t;
+typedef int (*ftdm_fsk_data_decoder_t)(ftdm_fsk_data_state_t *state);
+typedef ftdm_status_t (*ftdm_fsk_write_sample_t)(int16_t *buf, ftdm_size_t buflen, void *user_data);
+typedef void (*ftdm_logger_t)(const char *file, const char *func, int line, int level, const char *fmt, ...);
+typedef struct hashtable ftdm_hash_t;
+typedef struct hashtable_iterator ftdm_hash_iterator_t;
+typedef struct key ftdm_hash_key_t;
+typedef struct value ftdm_hash_val_t;
+typedef struct ftdm_bitstream ftdm_bitstream_t;
+typedef struct ftdm_fsk_modulator ftdm_fsk_modulator_t;
+typedef ftdm_status_t (*ftdm_span_start_t)(ftdm_span_t *span);
+typedef ftdm_status_t (*ftdm_span_stop_t)(ftdm_span_t *span);
+
+typedef enum {
+	FTDM_CAUSE_NONE = 0,
+	FTDM_CAUSE_UNALLOCATED = 1,
+	FTDM_CAUSE_NO_ROUTE_TRANSIT_NET = 2,
+	FTDM_CAUSE_NO_ROUTE_DESTINATION = 3,
+	FTDM_CAUSE_CHANNEL_UNACCEPTABLE = 6,
+	FTDM_CAUSE_CALL_AWARDED_DELIVERED = 7,
+	FTDM_CAUSE_NORMAL_CLEARING = 16,
+	FTDM_CAUSE_USER_BUSY = 17,
+	FTDM_CAUSE_NO_USER_RESPONSE = 18,
+	FTDM_CAUSE_NO_ANSWER = 19,
+	FTDM_CAUSE_SUBSCRIBER_ABSENT = 20,
+	FTDM_CAUSE_CALL_REJECTED = 21,
+	FTDM_CAUSE_NUMBER_CHANGED = 22,
+	FTDM_CAUSE_REDIRECTION_TO_NEW_DESTINATION = 23,
+	FTDM_CAUSE_EXCHANGE_ROUTING_ERROR = 25,
+	FTDM_CAUSE_DESTINATION_OUT_OF_ORDER = 27,
+	FTDM_CAUSE_INVALID_NUMBER_FORMAT = 28,
+	FTDM_CAUSE_FACILITY_REJECTED = 29,
+	FTDM_CAUSE_RESPONSE_TO_STATUS_ENQUIRY = 30,
+	FTDM_CAUSE_NORMAL_UNSPECIFIED = 31,
+	FTDM_CAUSE_NORMAL_CIRCUIT_CONGESTION = 34,
+	FTDM_CAUSE_NETWORK_OUT_OF_ORDER = 38,
+	FTDM_CAUSE_NORMAL_TEMPORARY_FAILURE = 41,
+	FTDM_CAUSE_SWITCH_CONGESTION = 42,
+	FTDM_CAUSE_ACCESS_INFO_DISCARDED = 43,
+	FTDM_CAUSE_REQUESTED_CHAN_UNAVAIL = 44,
+	FTDM_CAUSE_PRE_EMPTED = 45,
+	FTDM_CAUSE_FACILITY_NOT_SUBSCRIBED = 50,
+	FTDM_CAUSE_OUTGOING_CALL_BARRED = 52,
+	FTDM_CAUSE_INCOMING_CALL_BARRED = 54,
+	FTDM_CAUSE_BEARERCAPABILITY_NOTAUTH = 57,
+	FTDM_CAUSE_BEARERCAPABILITY_NOTAVAIL = 58,
+	FTDM_CAUSE_SERVICE_UNAVAILABLE = 63,
+	FTDM_CAUSE_BEARERCAPABILITY_NOTIMPL = 65,
+	FTDM_CAUSE_CHAN_NOT_IMPLEMENTED = 66,
+	FTDM_CAUSE_FACILITY_NOT_IMPLEMENTED = 69,
+	FTDM_CAUSE_SERVICE_NOT_IMPLEMENTED = 79,
+	FTDM_CAUSE_INVALID_CALL_REFERENCE = 81,
+	FTDM_CAUSE_INCOMPATIBLE_DESTINATION = 88,
+	FTDM_CAUSE_INVALID_MSG_UNSPECIFIED = 95,
+	FTDM_CAUSE_MANDATORY_IE_MISSING = 96,
+	FTDM_CAUSE_MESSAGE_TYPE_NONEXIST = 97,
+	FTDM_CAUSE_WRONG_MESSAGE = 98,
+	FTDM_CAUSE_IE_NONEXIST = 99,
+	FTDM_CAUSE_INVALID_IE_CONTENTS = 100,
+	FTDM_CAUSE_WRONG_CALL_STATE = 101,
+	FTDM_CAUSE_RECOVERY_ON_TIMER_EXPIRE = 102,
+	FTDM_CAUSE_MANDATORY_IE_LENGTH_ERROR = 103,
+	FTDM_CAUSE_PROTOCOL_ERROR = 111,
+	FTDM_CAUSE_INTERWORKING = 127,
+	FTDM_CAUSE_SUCCESS = 142,
+	FTDM_CAUSE_ORIGINATOR_CANCEL = 487,
+	FTDM_CAUSE_CRASH = 500,
+	FTDM_CAUSE_SYSTEM_SHUTDOWN = 501,
+	FTDM_CAUSE_LOSE_RACE = 502,
+	FTDM_CAUSE_MANAGER_REQUEST = 503,
+	FTDM_CAUSE_BLIND_TRANSFER = 600,
+	FTDM_CAUSE_ATTENDED_TRANSFER = 601,
+	FTDM_CAUSE_ALLOTTED_TIMEOUT = 602,
+	FTDM_CAUSE_USER_CHALLENGE = 603,
+	FTDM_CAUSE_MEDIA_TIMEOUT = 604
+} ftdm_call_cause_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
+ */
+