diff --git a/libs/iax/libiax2.vcproj b/libs/iax/libiax2.vcproj
index 5a5a5fa4ce..ce7a04c30f 100644
--- a/libs/iax/libiax2.vcproj
+++ b/libs/iax/libiax2.vcproj
@@ -147,6 +147,10 @@
 			Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
 			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
 			>
+			<File
+				RelativePath=".\src\iax-mutex.c"
+				>
+			</File>
 			<File
 				RelativePath=".\src\iax.c"
 				>
@@ -189,6 +193,10 @@
 				RelativePath=".\src\iax-client.h"
 				>
 			</File>
+			<File
+				RelativePath=".\src\iax-mutex.h"
+				>
+			</File>
 			<File
 				RelativePath=".\src\iax.h"
 				>
diff --git a/libs/iax/src/Makefile.am b/libs/iax/src/Makefile.am
index ba87808bc0..0f7f1b8b3e 100644
--- a/libs/iax/src/Makefile.am
+++ b/libs/iax/src/Makefile.am
@@ -8,8 +8,8 @@ AM_CFLAGS += $(UCFLAGS)
 
 pkgdir = $(libdir)
 pkg_LTLIBRARIES=libiax.la
-libiax_la_SOURCES = iax2-parser.c iax.c md5.c jitterbuf.c
+libiax_la_SOURCES = iax2-parser.c iax.c md5.c jitterbuf.c iax-mutex.c
 library_includedir = $(prefix)/include/iax
-library_include_HEADERS = md5.h frame.h iax-client.h iax2.h iax2-parser.h iax.h
+library_include_HEADERS = md5.h frame.h iax-client.h iax2.h iax2-parser.h iax.h iax-mutex.h
 noinst_HEADERS = jitterbuf.h
 
diff --git a/libs/iax/src/iax-mutex.c b/libs/iax/src/iax-mutex.c
new file mode 100644
index 0000000000..6fd82e7d5b
--- /dev/null
+++ b/libs/iax/src/iax-mutex.c
@@ -0,0 +1,105 @@
+/* 
+ * Simple 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. 
+ *
+ */
+
+
+#include "iax-mutex.h"
+
+
+#ifdef WIN32
+#define _WIN32_WINNT 0x0400
+#include <windows.h>
+struct mutex {
+	CRITICAL_SECTION mutex;
+};
+
+#else
+
+#include <pthread.h>
+struct mutex {
+	pthread_mutex_t mutex;
+};
+
+#endif
+
+
+mutex_status_t mutex_create(mutex_t **mutex)
+{
+	mutex_t *check = NULL;
+
+	check = (mutex_t *)malloc(sizeof(**mutex));
+	if (!check)
+		return MUTEX_FAILURE;
+#ifdef WIN32
+	InitializeCriticalSection(&check->mutex);
+#else
+	if (pthread_mutex_init(&check->mutex, NULL))
+		return MUTEX_FAILURE;
+
+#endif
+
+	*mutex = check;
+
+	return MUTEX_SUCCESS;
+}
+
+mutex_status_t mutex_destroy(mutex_t *mutex)
+{
+#ifdef WIN32
+	DeleteCriticalSection(&mutex->mutex);
+#else
+	if (pthread_mutex_destroy(&mutex->mutex))
+		return MUTEX_FAILURE;
+#endif
+	free(mutex);
+	return MUTEX_SUCCESS;
+}
+
+mutex_status_t mutex_lock(mutex_t *mutex)
+{
+#ifdef WIN32
+	EnterCriticalSection(&mutex->mutex);
+#else
+	if (pthread_mutex_lock(&mutex->mutex))
+		return MUTEX_FAILURE;
+#endif
+	return MUTEX_SUCCESS;
+}
+
+mutex_status_t mutex_trylock(mutex_t *mutex)
+{
+#ifdef WIN32
+	if (!TryEnterCriticalSection(&mutex->mutex))
+		return MUTEX_FAILURE;
+#else
+	if (pthread_mutex_trylock(&mutex->mutex))
+		return MUTEX_FAILURE;
+#endif
+	return MUTEX_SUCCESS;
+}
+
+mutex_status_t mutex_unlock(mutex_t *mutex)
+{
+#ifdef WIN32
+	LeaveCriticalSection(&mutex->mutex);
+#else
+	if (pthread_mutex_unlock(&mutex->mutex))
+		return MUTEX_FAILURE;
+#endif
+	return MUTEX_SUCCESS;
+}
diff --git a/libs/iax/src/iax-mutex.h b/libs/iax/src/iax-mutex.h
new file mode 100644
index 0000000000..1c0f407b8e
--- /dev/null
+++ b/libs/iax/src/iax-mutex.h
@@ -0,0 +1,37 @@
+/* 
+ * Simple 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. 
+ *
+ */
+
+
+#ifndef _SIMPLE_ABSTRACT_MUTEX_H
+#define _SIMPLE_ABSTRACT_MUTEX_H
+
+typedef struct mutex mutex_t;
+
+typedef enum mutex_status {
+	MUTEX_SUCCESS,
+	MUTEX_FAILURE
+} mutex_status_t;
+
+mutex_status_t mutex_create(mutex_t **mutex);
+mutex_status_t mutex_destroy(mutex_t *mutex);
+mutex_status_t mutex_lock(mutex_t *mutex);
+mutex_status_t mutex_trylock(mutex_t *mutex);
+mutex_status_t mutex_unlock(mutex_t *mutex);
+
+#endif