diff --git a/linphone-1.7.1-extgsm.patch b/linphone-1.7.1-extgsm.patch
new file mode 100644
index 0000000..1fc23d8
--- /dev/null
+++ b/linphone-1.7.1-extgsm.patch
@@ -0,0 +1,199 @@
+diff --git a/Makefile.am b/Makefile.am
+index 90a6343..872ca5e 100644
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -9,7 +9,13 @@ else
+ ORTP_DIR = oRTP
+ endif
+ 
+-SUBDIRS = m4 pixmaps po ipkg $(ORTP_DIR) gsmlib mediastreamer2\
++if EXTERNAL_GSM
++GSM_DIR =
++else
++GSM_DIR = gsmlib
++endif
++
++SUBDIRS = m4 pixmaps po ipkg $(ORTP_DIR) $(GSM_DIR) mediastreamer2\
+ 		media_api exosip coreapi console gtk share
+ 
+ 
+diff --git a/configure.in b/configure.in
+index 5c55410..81e917c 100644
+--- a/configure.in
++++ b/configure.in
+@@ -320,6 +320,30 @@ AC_SUBST(ORTP_LIBS)
+ 
+ AM_CONDITIONAL(EXTERNAL_ORTP, [test "$external_ortp" = 'true'])
+ 
++AC_ARG_WITH(gsm,
++         AS_HELP_STRING([--with-gsm],[Sets the installation prefix of GSM codec library (default=/usr)]),
++	 [ gsmdir=${withval}],[ gsmdir=/usr ])
++
++AC_ARG_ENABLE(external-gsm,
++      AS_HELP_STRING([--enable-external-gsm],[Use external GSM library (default=false)]),
++      [case "${enableval}" in
++        yes) external_gsm=true ;;
++        no)  external_gsm=false ;;
++        *) AC_MSG_ERROR(bad value ${enableval} for --enable-external-gsm) ;;
++      esac],[external_gsm=false])
++
++if test "$external_gsm" = 'true'; then
++	LP_CHECK_GSM
++else
++	AC_CONFIG_SUBDIRS(gsmlib)
++	GSM_CFLAGS="-I\$(top_srcdir)/gsmlib"
++	GSM_LIBS="\$(top_builddir)/gsmlib/libgsm.la"
++	AC_SUBST(GSM_CFLAGS)
++	AC_SUBST(GSM_LIBS)
++fi
++
++AM_CONDITIONAL(EXTERNAL_GSM, [test "$external_gsm" = 'true'])
++
+ dnl Packaging: Pick oRTP version from ${top_srcdir}/oRTP/configure.ac
+ dnl Feel free to propose an alternative & cleaner version...
+ top_srcdir=`dirname $0`
+diff --git a/m4/gsm.m4 b/m4/gsm.m4
+new file mode 100644
+index 0000000..7471c75
+--- /dev/null
++++ b/m4/gsm.m4
+@@ -0,0 +1,29 @@
++AC_DEFUN([LP_CHECK_GSM],[
++
++gsm_pkgconfig=true
++
++PKG_CHECK_MODULES([GSM], [gsm], , [gsm_pkgconfig=false])
++
++if test $gsm_pkgconfig = false; then
++	if ${gsmdir} != "/usr"; then
++		CFLAGS_save=$CFLAGS
++		CFLAGS="$CFLAGS -I${gsmdir}/include"
++	fi
++	AC_CHECK_HEADER([gsm/gsm.h], , AC_MSG_ERROR([Could not find GSM headers !]))
++	if ${gsmdir} != "/usr"; then
++		GSM_CFLAGS="-I{gsmdir}/include"
++		CFLAGS=$CFLAGS_save
++		LIBS_save=$LIBS
++		LIBS="$LIBS -L${gsmdir}/lib"
++	fi
++	AC_CHECK_LIB([gsm], [gsm_create], , AC_MSG_ERROR([Could not find GSM library]))
++	if ${gsmdir} != "/usr"; then
++		GSM_LIBS="-L${gsmdir}/lib -lgsm"
++		LIBS=$LIBS_save
++	else
++		GSM_LIBS="-lgsm"
++	fi
++fi
++AC_SUBST([GSM_LIBS])
++AC_SUBST([GSM_CFLAGS])
++])
+diff --git a/mediastreamer2/autogen.sh b/mediastreamer2/autogen.sh
+index 64516e8..fb71734 100755
+--- a/mediastreamer2/autogen.sh
++++ b/mediastreamer2/autogen.sh
+@@ -14,6 +14,6 @@ echo "Generating build scripts in mediastreamer..."
+ set -x
+ libtoolize --copy --force
+ autoheader
+-$ACLOCAL 
++$ACLOCAL -I m4
+ $AUTOMAKE --force-missing --add-missing --copy
+ autoconf
+diff --git a/mediastreamer2/configure.ac b/mediastreamer2/configure.ac
+index 89d66fa..9621a5e 100644
+--- a/mediastreamer2/configure.ac
++++ b/mediastreamer2/configure.ac
+@@ -263,31 +263,40 @@ AC_SUBST(SPEEX_LIBS)
+ AM_CONDITIONAL(BUILD_SPEEX, test x$build_speex = xyes )
+ 
+ dnl check for gsm
+-AC_ARG_WITH( gsm,
+-		  [  --with-gsm		Sets the installation prefix of gsm codec library [default=/usr] ],
+-		  [ gsmdir=${withval}],[ gsmdir=/usr ])
+-if test -e ../gsmlib/gsm.h ; then 
+-	echo "building from linphone source tree, using ../gsmlib/gsm.h"
+-	GSM_CFLAGS="-I\$(top_srcdir)/../gsmlib"
+-	GSM_LIBS="\$(top_builddir)/../gsmlib/libgsm.la"
+-	build_gsm=yes
+-	AC_SUBST(GSM_CFLAGS)
+-	AC_SUBST(GSM_LIBS)
+-else
+-	MS_CHECK_DEP([gsm codec],[GSM],[${gsmdir}/include],
+-		[${gsmdir}/lib],[gsm.h],[gsm],[gsm_create])
+-
+-	if test "$GSM_found" = "yes" ; then
+-	   build_gsm=yes
++AC_ARG_WITH(gsm,
++	AS_HELP_STRING([--with-gsm],[Sets the installation prefix of gsm codec library (default=/usr)]),
++	[ gsmdir=${withval}],[ gsmdir=/usr ])
++AC_ARG_ENABLE(external-gsm,
++	AS_HELP_STRING([--enable-external-gsm],[Use external GSM library]),
++	[case "${enableval}" in
++	      yes) external_gsm=true ;;
++	      no)  external_gsm=false ;;
++	      *) AC_MSG_ERROR(bad value ${enableval} for --enable-external-gsm) ;;
++	 esac],[external_gsm=false])
++
++if test "$external_gsm" = 'false'; then
++	if test -e $srcdir/../gsmlib/gsm.h ; then 
++		echo "building from linphone source tree, using ../gsmlib/gsm.h"
++		GSM_CFLAGS="-I\$(top_srcdir)/../gsmlib"
++		GSM_LIBS="\$(top_builddir)/../gsmlib/libgsm.la"
++		AC_SUBST(GSM_CFLAGS)
++		AC_SUBST(GSM_LIBS)
++		build_gsm=yes
++	else
++		external_gsm=true
+ 	fi
+ fi
++if test "$external_gsm" = 'true'; then
++	MS_CHECK_GSM
++	build_gsm=yes
++fi
++
++AM_CONDITIONAL(BUILD_GSM, test x$build_gsm = xyes )
+ 
+ build_resample=false
+ AC_CHECK_LIB(resample,resample_open,[LIBS="$LIBS -lresample"; build_resample=yes])
+ AM_CONDITIONAL(BUILD_RESAMPLE, test x$build_resample = xyes )
+ 
+-AM_CONDITIONAL(BUILD_GSM, test x$build_gsm = xyes )
+-
+ MS_CHECK_VIDEO
+ AM_CONDITIONAL(BUILD_VIDEO, test "$video" = "true")
+ AM_CONDITIONAL(BUILD_THEORA, test "$have_theora" = "yes")
+diff --git a/mediastreamer2/m4/gsm.m4 b/mediastreamer2/m4/gsm.m4
+new file mode 100644
+index 0000000..73d0568
+--- /dev/null
++++ b/mediastreamer2/m4/gsm.m4
+@@ -0,0 +1,29 @@
++AC_DEFUN([MS_CHECK_GSM],[
++
++gsm_pkgconfig=true
++
++PKG_CHECK_MODULES([GSM], [gsm], , [gsm_pkgconfig=false])
++
++if test $gsm_pkgconfig = false; then
++	if ${gsmdir} != "/usr"; then
++		CFLAGS_save=$CFLAGS
++		CFLAGS="$CFLAGS -I${gsmdir}/include"
++	fi
++	AC_CHECK_HEADER([gsm/gsm.h], , AC_MSG_ERROR([Could not find GSM headers !]))
++	if ${gsmdir} != "/usr"; then
++		GSM_CFLAGS="-I{gsmdir}/include"
++		CFLAGS=$CFLAGS_save
++		LIBS_save=$LIBS
++		LIBS="$LIBS -L${gsmdir}/lib"
++	fi
++	AC_CHECK_LIB([gsm], [gsm_create], , AC_MSG_ERROR([Could not find GSM library]))
++	if ${gsmdir} != "/usr"; then
++		GSM_LIBS="-L${gsmdir}/lib -lgsm"
++		LIBS=$LIBS_save
++	else
++		GSM_LIBS="-lgsm"
++	fi
++fi
++AC_SUBST([GSM_LIBS])
++AC_SUBST([GSM_CFLAGS])
++])
diff --git a/linphone.spec b/linphone.spec
index 2c319b5..beec43a 100644
--- a/linphone.spec
+++ b/linphone.spec
@@ -1,6 +1,6 @@
 Name:           linphone
 Version:        1.7.1
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Phone anywhere in the whole world by using the Internet
 
 Group:          Applications/Communications
@@ -10,6 +10,7 @@ Source0:        http://download.savannah.nongnu.org/releases/linphone/1.7.x/sour
 Patch0:         linphone-1.7.1-ortpm4.patch
 Patch1:         linphone-1.7.1-imagedir.patch
 Patch2:         linphone-1.7.1-gtkosip.patch
+Patch3:         linphone-1.7.1-extgsm.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  compat-libosip2-devel
@@ -22,6 +23,7 @@ BuildRequires:  gtk2-devel
 BuildRequires:  alsa-lib-devel
 
 BuildRequires:  speex-devel >= 1.2
+BuildRequires:  gsm-devel
 
 BuildRequires:  desktop-file-utils
 
@@ -64,12 +66,7 @@ Libraries and headers required to develop software with linphone.
 %patch0 -p1 -b .ortpm4
 %patch1 -p1 -b .imagedir
 %patch2 -p1 -b .gtkosip
-
-#patch0 -p1 -b .old
-#patch1 -p1 -b .libs
-#patch2 -p0 -b .osip
-
-#rm -r oRTP
+%patch3 -p1 -b .extgsm
 
 pushd share/cs
 for f in *.1
@@ -89,13 +86,13 @@ rm -rf config.cache
 
 pushd mediastreamer2
 libtoolize --copy --force
-aclocal
+aclocal -I m4
 autoheader
 automake --force-missing --add-missing --copy
 autoconf
 popd
 
-%configure --disable-static --disable-rpath --disable-video --enable-alsa --enable-strict --enable-external-ortp --with-osip-version=2.2.2
+%configure --disable-static --disable-rpath --disable-video --enable-alsa --enable-strict --enable-external-ortp --with-osip-version=2.2.2 --enable-external-gsm
 make %{?_smp_mflags}
 
 %install
@@ -147,6 +144,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_libdir}/pkgconfig/*
 
 %changelog
+* Mon May 14 2007 Jeffrey C. Ollie <jeff@ocjtech.us> - 1.7.1-2
+- Add patch for compiling against external GSM library.
+
 * Tue Apr 17 2007 Jeffrey C. Ollie <jeff@ocjtech.us> - 1.7.1-1
 - Update to 1.7.1
 - Drop linphone-1.0.1-desktop.patch, linphone-1.4.1-libs.patch and