diff --git a/Freeswitch.2017.sln b/Freeswitch.2017.sln
index 0326ffac12..9b8b94cd78 100644
--- a/Freeswitch.2017.sln
+++ b/Freeswitch.2017.sln
@@ -556,6 +556,16 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "test_switch_ivr_originate",
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "test_switch_core_codec", "tests\unit\test_switch_core_codec.2017.vcxproj", "{589A07E7-5DE5-49FD-A62C-27795B806AFB}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_v34_tx_pre_emphasis_filters", "libs\win32\spandsp\make_v34_tx_pre_emphasis_filters.2017.vcxproj", "{97035E2A-392E-40D1-B27D-DA700A1FDB49}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_v34_shell_map", "libs\win32\spandsp\make_v34_shell_map.2017.vcxproj", "{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_v34_probe_signals", "libs\win32\spandsp\make_v34_probe_signals.2017.vcxproj", "{D33E088B-0A1A-498E-B825-9E49040E28DF}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_v34_convolutional_coders", "libs\win32\spandsp\make_v34_convolutional_coders.2017.vcxproj", "{368924D6-AC75-42AE-9D64-7E3EB3FD109C}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_modem_godard_descriptor", "libs\win32\spandsp\make_modem_godard_descriptor.2017.vcxproj", "{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		All|Win32 = All|Win32
@@ -2530,6 +2540,66 @@ Global
 		{589A07E7-5DE5-49FD-A62C-27795B806AFB}.Release|Win32.Build.0 = Release|Win32
 		{589A07E7-5DE5-49FD-A62C-27795B806AFB}.Release|x64.ActiveCfg = Release|x64
 		{589A07E7-5DE5-49FD-A62C-27795B806AFB}.Release|x64.Build.0 = Release|x64
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.All|Win32.ActiveCfg = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.All|Win32.Build.0 = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.All|x64.ActiveCfg = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.All|x64.Build.0 = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.Debug|Win32.ActiveCfg = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.Debug|Win32.Build.0 = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.Debug|x64.ActiveCfg = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.Debug|x64.Build.0 = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.Release|Win32.ActiveCfg = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.Release|Win32.Build.0 = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.Release|x64.ActiveCfg = All|Win32
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49}.Release|x64.Build.0 = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.All|Win32.ActiveCfg = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.All|Win32.Build.0 = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.All|x64.ActiveCfg = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.All|x64.Build.0 = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.Debug|Win32.ActiveCfg = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.Debug|Win32.Build.0 = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.Debug|x64.ActiveCfg = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.Debug|x64.Build.0 = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.Release|Win32.ActiveCfg = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.Release|Win32.Build.0 = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.Release|x64.ActiveCfg = All|Win32
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}.Release|x64.Build.0 = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.All|Win32.ActiveCfg = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.All|Win32.Build.0 = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.All|x64.ActiveCfg = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.All|x64.Build.0 = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.Debug|Win32.ActiveCfg = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.Debug|Win32.Build.0 = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.Debug|x64.ActiveCfg = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.Debug|x64.Build.0 = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.Release|Win32.ActiveCfg = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.Release|Win32.Build.0 = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.Release|x64.ActiveCfg = All|Win32
+		{D33E088B-0A1A-498E-B825-9E49040E28DF}.Release|x64.Build.0 = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.All|Win32.ActiveCfg = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.All|Win32.Build.0 = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.All|x64.ActiveCfg = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.All|x64.Build.0 = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.Debug|Win32.ActiveCfg = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.Debug|Win32.Build.0 = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.Debug|x64.ActiveCfg = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.Debug|x64.Build.0 = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.Release|Win32.ActiveCfg = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.Release|Win32.Build.0 = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.Release|x64.ActiveCfg = All|Win32
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C}.Release|x64.Build.0 = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.All|Win32.ActiveCfg = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.All|Win32.Build.0 = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.All|x64.ActiveCfg = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.All|x64.Build.0 = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.Debug|Win32.ActiveCfg = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.Debug|Win32.Build.0 = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.Debug|x64.ActiveCfg = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.Debug|x64.Build.0 = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.Release|Win32.ActiveCfg = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.Release|Win32.Build.0 = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.Release|x64.ActiveCfg = All|Win32
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}.Release|x64.Build.0 = All|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -2729,6 +2799,11 @@ Global
 		{580675D7-C1C9-4197-AAC5-00F64FAFDE78} = {9388C266-C3FC-468A-92EF-0CBC35941412}
 		{69A7464A-9B0D-4804-A108-835229DACF58} = {9388C266-C3FC-468A-92EF-0CBC35941412}
 		{589A07E7-5DE5-49FD-A62C-27795B806AFB} = {9388C266-C3FC-468A-92EF-0CBC35941412}
+		{97035E2A-392E-40D1-B27D-DA700A1FDB49} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
+		{4A1CA87F-32EF-428E-8D55-7F0D6D91516B} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
+		{D33E088B-0A1A-498E-B825-9E49040E28DF} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
+		{368924D6-AC75-42AE-9D64-7E3EB3FD109C} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
+		{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {09840DE7-9208-45AA-9667-1A71EE93BD1E}
diff --git a/libs/.gitignore b/libs/.gitignore
index 87da2671c6..0073e66e7b 100644
--- a/libs/.gitignore
+++ b/libs/.gitignore
@@ -651,5 +651,7 @@ mariadb-connector-c-*/
 mariadb-connector-c-*
 /spandsp*/
 /spandsp*
+win32/spandsp/filters.csv
 win32/spandsp/spandsp.h
+win32/spandsp/v34_tx_pre_emphasis_filters.h
 win32/spandsp/win32
diff --git a/libs/win32/spandsp/libspandsp.2017.vcxproj b/libs/win32/spandsp/libspandsp.2017.vcxproj
index 6a3d8012d0..ad6965a005 100644
--- a/libs/win32/spandsp/libspandsp.2017.vcxproj
+++ b/libs/win32/spandsp/libspandsp.2017.vcxproj
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
@@ -188,6 +188,7 @@
     <ClCompile Include="$(BaseDir)libs\spandsp\src\g711.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\g722.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\g726.c" />
+    <ClCompile Include="$(BaseDir)libs\spandsp\src\godard.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\gsm0610_decode.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\gsm0610_encode.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\gsm0610_long_term.c" />
@@ -254,11 +255,19 @@
     <ClCompile Include="$(BaseDir)libs\spandsp\src\v42.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\v42bis.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\v8.c" />
+    <ClCompile Include="$(BaseDir)libs\spandsp\src\v80.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\vector_float.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\vector_int.c" />
     <ClCompile Include="$(BaseDir)libs\spandsp\src\msvc\gettimeofday.c" />
+    <ClCompile Include="$(BaseDir)libs\spandsp\src\sprt.c" />
+    <ClCompile Include="$(BaseDir)libs\spandsp\src\v150_1.c" />
+    <ClCompile Include="$(BaseDir)libs\spandsp\src\v150_1_sse.c" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v34_local.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v34_tables.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v34_superconstellation_map.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v150_1_local.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\ademco_contactid.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\adsi.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\alloc.h" />
@@ -290,6 +299,7 @@
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\g711.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\g722.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\g726.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\godard.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\gsm0610.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\hdlc.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\ima_adpcm.h" />
@@ -309,6 +319,8 @@
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\schedule.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\sig_tone.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\silence_gen.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\sprt.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\stdbool.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\super_tone_rx.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\super_tone_tx.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\swept_tone.h" />
@@ -335,6 +347,9 @@
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\timing.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\tone_detect.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\tone_generate.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\unaligned.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v150_1.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v150_1_sse.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v17rx.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v17tx.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v18.h" />
@@ -346,6 +361,7 @@
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v42.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v42bis.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v8.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\v80.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\vector_float.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\vector_int.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\version.h" />
@@ -383,6 +399,7 @@
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\schedule.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\sig_tone.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\silence_gen.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\sprt.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\super_tone_rx.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\super_tone_tx.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\swept_tone.h" />
@@ -405,6 +422,8 @@
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\timezone.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\tone_detect.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\tone_generate.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\v150_1.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\v150_1_sse.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\v17rx.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\v17tx.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\v18.h" />
@@ -416,6 +435,7 @@
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\v42.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\v42bis.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\v8.h" />
+    <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\private\v80.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp\expose.h" />
     <ClInclude Include="$(BaseDir)libs\spandsp\src\spandsp.h" />
     <CustomBuild Include="$(BaseDir)libs\spandsp\src\msvc\spandsp.h">
@@ -464,6 +484,18 @@
       <Project>{eddb8ab9-c53e-44c0-a620-0e86c2cbd5d5}</Project>
       <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
     </ProjectReference>
+    <ProjectReference Include="make_v34_convolutional_coders.2017.vcxproj">
+      <Project>{368924d6-ac75-42ae-9d64-7e3eb3fd109c}</Project>
+    </ProjectReference>
+    <ProjectReference Include="make_v34_probe_signals.2017.vcxproj">
+      <Project>{d33e088b-0a1a-498e-b825-9e49040e28df}</Project>
+    </ProjectReference>
+    <ProjectReference Include="make_v34_shell_map.2017.vcxproj">
+      <Project>{4a1ca87f-32ef-428e-8d55-7f0d6d91516b}</Project>
+    </ProjectReference>
+    <ProjectReference Include="make_v34_tx_pre_emphasis_filters.2017.vcxproj">
+      <Project>{97035e2a-392e-40d1-b27d-da700a1fdb49}</Project>
+    </ProjectReference>
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/libs/win32/spandsp/make_modem_filter.2017.vcxproj b/libs/win32/spandsp/make_modem_filter.2017.vcxproj
index eae331a73a..fcdee8a4b9 100644
--- a/libs/win32/spandsp/make_modem_filter.2017.vcxproj
+++ b/libs/win32/spandsp/make_modem_filter.2017.vcxproj
@@ -79,6 +79,26 @@
 "$(TargetPath)" -m V.27ter2400 -t &gt;"..\..\spandsp\src\v27ter_tx_2400_floating_rrc.h"
 "$(TargetPath)" -m V.27ter4800 -t &gt;"..\..\spandsp\src\v27ter_tx_4800_floating_rrc.h"
 
+"$(TargetPath)" -m V.34_2400 -r &gt;"..\..\spandsp\src\v34_rx_2400_low_carrier_rrc.h"
+"$(TargetPath)" -m V.34_2400_high -r &gt;"..\..\spandsp\src\v34_rx_2400_high_carrier_rrc.h"
+"$(TargetPath)" -m V.34_2743 -r &gt;"..\..\spandsp\src\v34_rx_2743_low_carrier_rrc.h"
+"$(TargetPath)" -m V.34_2743_high -r &gt;"..\..\spandsp\src\v34_rx_2743_high_carrier_rrc.h"
+"$(TargetPath)" -m V.34_2800 -r &gt;"..\..\spandsp\src\v34_rx_2800_low_carrier_rrc.h"
+"$(TargetPath)" -m V.34_2800_high -r &gt;"..\..\spandsp\src\v34_rx_2800_high_carrier_rrc.h"
+"$(TargetPath)" -m V.34_3000 -r &gt;"..\..\spandsp\src\v34_rx_3000_low_carrier_rrc.h"
+"$(TargetPath)" -m V.34_3000_high -r &gt;"..\..\spandsp\src\v34_rx_3000_high_carrier_rrc.h"
+"$(TargetPath)" -m V.34_3200 -r &gt;"..\..\spandsp\src\v34_rx_3200_low_carrier_rrc.h"
+"$(TargetPath)" -m V.34_3200_high -r &gt;"..\..\spandsp\src\v34_rx_3200_high_carrier_rrc.h"
+
+
+"$(TargetPath)" -m V.34_2400   -t &gt;"..\..\spandsp\src\v34_tx_2400_rrc.h"
+"$(TargetPath)" -m V.34_2743   -t &gt;"..\..\spandsp\src\v34_tx_2743_rrc.h"
+"$(TargetPath)" -m V.34_2800   -t &gt;"..\..\spandsp\src\v34_tx_2800_rrc.h"
+"$(TargetPath)" -m V.34_3000   -t &gt;"..\..\spandsp\src\v34_tx_3000_rrc.h"
+"$(TargetPath)" -m V.34_3200   -t &gt;"..\..\spandsp\src\v34_tx_3200_rrc.h"
+"$(TargetPath)" -m V.34_3429   -t &gt;"..\..\spandsp\src\v34_tx_3429_rrc.h"
+
+
 "$(TargetPath)" -m V.29 -r &gt;"..\..\spandsp\src\v29rx_rrc.h"
 "$(TargetPath)" -m V.29 -r &gt;"..\..\spandsp\src\v29rx_floating_rrc.h"
 "$(TargetPath)" -m V.29 -t &gt;"..\..\spandsp\src\v29tx_rrc.h"
diff --git a/libs/win32/spandsp/make_modem_godard_descriptor.2017.vcxproj b/libs/win32/spandsp/make_modem_godard_descriptor.2017.vcxproj
new file mode 100644
index 0000000000..738362297e
--- /dev/null
+++ b/libs/win32/spandsp/make_modem_godard_descriptor.2017.vcxproj
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="All|Win32">
+      <Configuration>All</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectName>make_modem_godard_descriptor</ProjectName>
+    <RootNamespace>make_modem_godard_descriptor</RootNamespace>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{C8EA4AD3-3EDD-4DD1-9D63-4BE22585AA14}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(SolutionDir)\w32\tiff.props" />
+    <Import Project="$(SolutionDir)\w32\spandsp.props" />
+  </ImportGroup>
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\$(Configuration)\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\make_modem_godard_descriptor\$(Configuration)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='All|Win32'">false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'">
+    <BuildLog>
+      <Path>$(IntDir)BuildLog $(ProjectName).htm</Path>
+    </BuildLog>
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;HAVE_CONFIG_H;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MinimalRebuild>true</MinimalRebuild>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <ProgramDataBaseFileName>$(IntDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <TargetMachine>MachineX86</TargetMachine>
+    </Link>
+    <PostBuildEvent>
+      <Command>"$(TargetPath)" 1800.0 2400.0 0.99 1000.0 100.0 15 1 &gt;"..\..\spandsp\src\v17_v32bis_rx_godard.h"
+"$(TargetPath)" 1700.0 2400.0 0.99 1000.0 30.0 5 1 &gt;"..\..\spandsp\src\v29rx_godard.h"
+</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\spandsp\src\filter_tools.c" />
+    <ClCompile Include="..\..\spandsp\src\make_modem_godard_descriptor.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\spandsp\src\filter_tools.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/libs/win32/spandsp/make_v34_convolutional_coders.2017.vcxproj b/libs/win32/spandsp/make_v34_convolutional_coders.2017.vcxproj
new file mode 100644
index 0000000000..eb07ff39bd
--- /dev/null
+++ b/libs/win32/spandsp/make_v34_convolutional_coders.2017.vcxproj
@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="All|Win32">
+      <Configuration>All</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectName>make_v34_convolutional_coders</ProjectName>
+    <RootNamespace>make_v34_convolutional_coders</RootNamespace>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{368924D6-AC75-42AE-9D64-7E3EB3FD109C}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(SolutionDir)\w32\tiff.props" />
+    <Import Project="$(SolutionDir)\w32\spandsp.props" />
+  </ImportGroup>
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\$(Configuration)\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\make_v34_convolutional_coders\$(Configuration)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='All|Win32'">false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'">
+    <BuildLog>
+      <Path>$(IntDir)BuildLog $(ProjectName).htm</Path>
+    </BuildLog>
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;HAVE_CONFIG_H;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MinimalRebuild>true</MinimalRebuild>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <ProgramDataBaseFileName>$(IntDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <TargetMachine>MachineX86</TargetMachine>
+    </Link>
+    <PostBuildEvent>
+      <Command>"$(TargetPath)" &gt;"..\..\spandsp\src\v34_convolutional_coders.h"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\spandsp\src\make_v34_convolutional_coders.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/libs/win32/spandsp/make_v34_probe_signals.2017.vcxproj b/libs/win32/spandsp/make_v34_probe_signals.2017.vcxproj
new file mode 100644
index 0000000000..258ec794cc
--- /dev/null
+++ b/libs/win32/spandsp/make_v34_probe_signals.2017.vcxproj
@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="All|Win32">
+      <Configuration>All</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectName>make_v34_probe_signals</ProjectName>
+    <RootNamespace>make_v34_probe_signals</RootNamespace>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{D33E088B-0A1A-498E-B825-9E49040E28DF}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(SolutionDir)\w32\tiff.props" />
+    <Import Project="$(SolutionDir)\w32\spandsp.props" />
+  </ImportGroup>
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\$(Configuration)\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\make_v34_probe_signals\$(Configuration)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='All|Win32'">false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'">
+    <BuildLog>
+      <Path>$(IntDir)BuildLog $(ProjectName).htm</Path>
+    </BuildLog>
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;HAVE_CONFIG_H;LIBSPANDSP_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MinimalRebuild>true</MinimalRebuild>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <ProgramDataBaseFileName>$(IntDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <TargetMachine>MachineX86</TargetMachine>
+    </Link>
+    <PostBuildEvent>
+      <Command>"$(TargetPath)" &gt;"..\..\spandsp\src\v34_probe_signals.h"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\spandsp\src\make_v34_probe_signals.c" />
+    <ClCompile Include="..\..\spandsp\src\g711.c" />
+    <ClCompile Include="..\..\spandsp\src\alloc.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/libs/win32/spandsp/make_v34_shell_map.2017.vcxproj b/libs/win32/spandsp/make_v34_shell_map.2017.vcxproj
new file mode 100644
index 0000000000..a9d741da1c
--- /dev/null
+++ b/libs/win32/spandsp/make_v34_shell_map.2017.vcxproj
@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="All|Win32">
+      <Configuration>All</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectName>make_v34_shell_map</ProjectName>
+    <RootNamespace>make_v34_shell_map</RootNamespace>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{4A1CA87F-32EF-428E-8D55-7F0D6D91516B}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(SolutionDir)\w32\tiff.props" />
+    <Import Project="$(SolutionDir)\w32\spandsp.props" />
+  </ImportGroup>
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\$(Configuration)\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\make_v34_shell_map\$(Configuration)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='All|Win32'">false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'">
+    <BuildLog>
+      <Path>$(IntDir)BuildLog $(ProjectName).htm</Path>
+    </BuildLog>
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;HAVE_CONFIG_H;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MinimalRebuild>true</MinimalRebuild>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <ProgramDataBaseFileName>$(IntDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <TargetMachine>MachineX86</TargetMachine>
+    </Link>
+    <PostBuildEvent>
+      <Command>"$(TargetPath)" &gt;"..\..\spandsp\src\v34_shell_map.h"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\spandsp\src\make_v34_shell_map.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/libs/win32/spandsp/make_v34_tx_pre_emphasis_filters.2017.vcxproj b/libs/win32/spandsp/make_v34_tx_pre_emphasis_filters.2017.vcxproj
new file mode 100644
index 0000000000..b1826e57ba
--- /dev/null
+++ b/libs/win32/spandsp/make_v34_tx_pre_emphasis_filters.2017.vcxproj
@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="All|Win32">
+      <Configuration>All</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectName>make_v34_tx_pre_emphasis_filters</ProjectName>
+    <RootNamespace>make_v34_tx_pre_emphasis_filters</RootNamespace>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{97035E2A-392E-40D1-B27D-DA700A1FDB49}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(SolutionDir)\w32\tiff.props" />
+    <Import Project="$(SolutionDir)\w32\spandsp.props" />
+  </ImportGroup>
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\$(Configuration)\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='All|Win32'">$(PlatformName)\make_v34_tx_pre_emphasis_filters\$(Configuration)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='All|Win32'">false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='All|Win32'">
+    <BuildLog>
+      <Path>$(IntDir)BuildLog $(ProjectName).htm</Path>
+    </BuildLog>
+    <ClCompile>
+      <AdditionalIncludeDirectories>.;..\..\spandsp\tools;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;HAVE_CONFIG_H;_USE_MATH_DEFINES;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MinimalRebuild>true</MinimalRebuild>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <ProgramDataBaseFileName>$(IntDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <TargetMachine>MachineX86</TargetMachine>
+    </Link>
+    <PostBuildEvent>
+      <Command>"$(TargetPath)"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\spandsp\src\make_v34_tx_pre_emphasis_filters.c" />
+    <ClCompile Include="..\..\spandsp\tools\meteor-engine.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/w32/download_spandsp.props b/w32/download_spandsp.props
index f02c66a9bd..e176e6bfdc 100644
--- a/w32/download_spandsp.props
+++ b/w32/download_spandsp.props
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ImportGroup Label="PropertySheets">
+    <Import Project="spandsp-version.props" Condition=" '$(SpandspVersionImported)' == '' "/>
     <Import Project="downloadpackage.task" Condition=" '$(downloadpackagetask_Imported)' == '' " />
   </ImportGroup>
   <PropertyGroup>
@@ -29,7 +30,7 @@
 
   <Target Name="SpandspDownloadTarget" BeforeTargets="CustomBuild;PreBuildEvent;" DependsOnTargets="7za">
       <DownloadPackageTask
-           package="https://github.com/freeswitch/spandsp/archive/0d2e6ac65e0e8f53d652665a743015a88bf048d4.zip"
+           package="https://github.com/freeswitch/spandsp/archive/$(SpandspVersion).zip"
            expectfileordirectory="$(BaseDir)libs\spandsp\configure.ac"
            outputfolder=""
            outputfilename="spandsp-$(SpandspVersion).zip"
diff --git a/w32/spandsp-version.props b/w32/spandsp-version.props
index 214805b0bf..7d9cd1cc59 100644
--- a/w32/spandsp-version.props
+++ b/w32/spandsp-version.props
@@ -4,7 +4,7 @@
     <Import Project="basedir.props" Condition=" '$(BaseDirImported)' == ''"/>
   </ImportGroup>
   <PropertyGroup Label="UserMacros">
-    <SpandspVersion>0d2e6ac65e0e8f53d652665a743015a88bf048d4</SpandspVersion>
+    <SpandspVersion>master</SpandspVersion>
   </PropertyGroup>
   <PropertyGroup>
     <SpandspVersionImported>true</SpandspVersionImported>