diff --git a/Freeswitch.2010.sln b/Freeswitch.2010.sln
index 4148d2ddc5..37ba5cfac0 100644
--- a/Freeswitch.2010.sln
+++ b/Freeswitch.2010.sln
@@ -572,6 +572,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libcbt", "libs\win32\libcbt
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_cielab_luts", "libs\spandsp\src\msvc\make_cielab_luts.2010.vcxproj", "{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_t43_gray_code_tables", "libs\spandsp\src\msvc\make_t43_gray_code_tables.2010.vcxproj", "{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		All|Win32 = All|Win32
@@ -3810,6 +3812,23 @@ Global
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}.Release|x64.Build.0 = All|Win32
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}.Release|x64 Setup.ActiveCfg = All|Win32
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}.Release|x86 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|Win32.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|Win32.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|x64.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|x64 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|x86 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|Win32.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|Win32.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|x64.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|x64.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|x64 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|x86 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|Win32.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|Win32.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|x64.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|x64.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|x64 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|x86 Setup.ActiveCfg = All|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -3927,6 +3946,7 @@ Global
 		{9D04A840-CE18-4FF5-A6D3-0A2BB92FF2E6} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
 		{77BC1DD2-C9A1-44D7-BFFA-1320370CACB9} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
 		{EC3E5C7F-EE09-47E2-80FE-546363D14A98} = {B8F5B47B-8568-46EB-B320-64C17D2A98BC}
 		{1AD3F51E-BBB6-4090-BA39-9DFAB1EF1F5F} = {0C808854-54D1-4230-BFF5-77B5FD905000}
 		{ACFFF684-4D19-4D48-AF12-88EA1D778BDF} = {0C808854-54D1-4230-BFF5-77B5FD905000}
diff --git a/Freeswitch.2012.sln b/Freeswitch.2012.sln
index 346914e690..be88964420 100644
--- a/Freeswitch.2012.sln
+++ b/Freeswitch.2012.sln
@@ -577,6 +577,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libcbt", "libs\win32\libcbt
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_cielab_luts", "libs\spandsp\src\msvc\make_cielab_luts.2012.vcxproj", "{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_t43_gray_code_tables", "libs\spandsp\src\msvc\make_t43_gray_code_tables.2012.vcxproj", "{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		All|Win32 = All|Win32
@@ -3820,6 +3822,23 @@ Global
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}.Release|x64.Build.0 = All|Win32
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}.Release|x64 Setup.ActiveCfg = All|Win32
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}.Release|x86 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|Win32.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|Win32.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|x64.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|x64 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.All|x86 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|Win32.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|Win32.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|x64.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|x64.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|x64 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Debug|x86 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|Win32.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|Win32.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|x64.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|x64.Build.0 = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|x64 Setup.ActiveCfg = All|Win32
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}.Release|x86 Setup.ActiveCfg = All|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -3937,6 +3956,7 @@ Global
 		{2386B892-35F5-46CF-A0F0-10394D2FBF9B} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
 		{77BC1DD2-C9A1-44D7-BFFA-1320370CACB9} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
+		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
 		{EC3E5C7F-EE09-47E2-80FE-546363D14A98} = {B8F5B47B-8568-46EB-B320-64C17D2A98BC}
 		{1AD3F51E-BBB6-4090-BA39-9DFAB1EF1F5F} = {0C808854-54D1-4230-BFF5-77B5FD905000}
 		{ACFFF684-4D19-4D48-AF12-88EA1D778BDF} = {0C808854-54D1-4230-BFF5-77B5FD905000}
diff --git a/libs/spandsp/src/libspandsp.2010.vcxproj b/libs/spandsp/src/libspandsp.2010.vcxproj
index 8bb87b58c6..02d6ca77e0 100644
--- a/libs/spandsp/src/libspandsp.2010.vcxproj
+++ b/libs/spandsp/src/libspandsp.2010.vcxproj
@@ -211,6 +211,7 @@
     <ClCompile Include="super_tone_tx.c" />
     <ClCompile Include="swept_tone.c" />
     <ClCompile Include="t42.c" />
+    <ClCompile Include="t43.c" />
     <ClCompile Include="t4_rx.c" />
     <ClCompile Include="t4_t6_decode.c" />
     <ClCompile Include="t4_t6_encode.c" />
@@ -294,6 +295,7 @@
     <ClInclude Include="spandsp\private\ademco_contactid.h" />
     <ClInclude Include="spandsp\private\image_translate.h" />
     <ClInclude Include="spandsp\private\t42.h" />
+    <ClInclude Include="spandsp\private\t43.h" />
     <ClInclude Include="spandsp\private\t81_t82_arith_coding.h" />
     <ClInclude Include="spandsp\private\t85.h" />
     <ClInclude Include="spandsp\queue.h" />
@@ -305,6 +307,7 @@
     <ClInclude Include="spandsp\super_tone_tx.h" />
     <ClInclude Include="spandsp\swept_tone.h" />
     <ClInclude Include="spandsp\t42.h" />
+    <ClInclude Include="spandsp\t43.h" />
     <ClInclude Include="spandsp\t4_rx.h" />
     <ClInclude Include="spandsp\t4_tx.h" />
     <ClInclude Include="spandsp\t4_t6_decode.h" />
@@ -438,6 +441,10 @@
       <Project>{329a6fa0-0fcc-4435-a950-e670aefa9838}</Project>
       <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
     </ProjectReference>
+    <ProjectReference Include="msvc\make_t43_gray_code_tables.2010.vcxproj">
+      <Project>{eddb8ab9-c53e-44c0-a620-0e86c2cbd5d5}</Project>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/libs/spandsp/src/libspandsp.2010.vcxproj.filters b/libs/spandsp/src/libspandsp.2010.vcxproj.filters
index cc34e6c278..dea495c328 100644
--- a/libs/spandsp/src/libspandsp.2010.vcxproj.filters
+++ b/libs/spandsp/src/libspandsp.2010.vcxproj.filters
@@ -286,6 +286,9 @@
     <ClCompile Include="alloc.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="t43.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="spandsp\adsi.h">
@@ -725,6 +728,12 @@
     <ClInclude Include="spandsp\private\image_translate.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="spandsp\t43.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="spandsp\private\t43.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <CustomBuild Include="msvc\spandsp.h" />
diff --git a/libs/spandsp/src/libspandsp.2012.vcxproj b/libs/spandsp/src/libspandsp.2012.vcxproj
index dd99dbc2d9..a73a1b3c88 100644
--- a/libs/spandsp/src/libspandsp.2012.vcxproj
+++ b/libs/spandsp/src/libspandsp.2012.vcxproj
@@ -215,6 +215,7 @@
     <ClCompile Include="super_tone_tx.c" />
     <ClCompile Include="swept_tone.c" />
     <ClCompile Include="t42.c" />
+    <ClCompile Include="t43.c" />
     <ClCompile Include="t4_rx.c" />
     <ClCompile Include="t4_t6_decode.c" />
     <ClCompile Include="t4_t6_encode.c" />
@@ -298,6 +299,7 @@
     <ClInclude Include="spandsp\private\ademco_contactid.h" />
     <ClInclude Include="spandsp\private\image_translate.h" />
     <ClInclude Include="spandsp\private\t42.h" />
+    <ClInclude Include="spandsp\private\t43.h" />
     <ClInclude Include="spandsp\private\t81_t82_arith_coding.h" />
     <ClInclude Include="spandsp\private\t85.h" />
     <ClInclude Include="spandsp\queue.h" />
@@ -309,6 +311,7 @@
     <ClInclude Include="spandsp\super_tone_tx.h" />
     <ClInclude Include="spandsp\swept_tone.h" />
     <ClInclude Include="spandsp\t42.h" />
+    <ClInclude Include="spandsp\t43.h" />
     <ClInclude Include="spandsp\t4_rx.h" />
     <ClInclude Include="spandsp\t4_tx.h" />
     <ClInclude Include="spandsp\t4_t6_decode.h" />
@@ -442,6 +445,10 @@
       <Project>{329a6fa0-0fcc-4435-a950-e670aefa9838}</Project>
       <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
     </ProjectReference>
+    <ProjectReference Include="msvc\make_t43_gray_code_tables.2012.vcxproj">
+      <Project>{eddb8ab9-c53e-44c0-a620-0e86c2cbd5d5}</Project>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/libs/spandsp/src/libspandsp.2012.vcxproj.filters b/libs/spandsp/src/libspandsp.2012.vcxproj.filters
index cc34e6c278..dea495c328 100644
--- a/libs/spandsp/src/libspandsp.2012.vcxproj.filters
+++ b/libs/spandsp/src/libspandsp.2012.vcxproj.filters
@@ -286,6 +286,9 @@
     <ClCompile Include="alloc.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="t43.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="spandsp\adsi.h">
@@ -725,6 +728,12 @@
     <ClInclude Include="spandsp\private\image_translate.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="spandsp\t43.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="spandsp\private\t43.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <CustomBuild Include="msvc\spandsp.h" />
diff --git a/libs/spandsp/src/make_t43_gray_code_tables.c b/libs/spandsp/src/make_t43_gray_code_tables.c
index 9e45b120ef..c44adc27bb 100644
--- a/libs/spandsp/src/make_t43_gray_code_tables.c
+++ b/libs/spandsp/src/make_t43_gray_code_tables.c
@@ -41,7 +41,7 @@ int main(int argc, char *argv[])
     int j;
     int gray;
     int new_gray;
-    int restore;
+    int restore = 0;
 
     printf("static const int16_t gray_code[4096] =\n{\n");
     for (i = 0;  i < 4096;  i++)
diff --git a/libs/spandsp/src/msvc/spandsp.h b/libs/spandsp/src/msvc/spandsp.h
index ec0b629d27..b98aa66aa4 100644
--- a/libs/spandsp/src/msvc/spandsp.h
+++ b/libs/spandsp/src/msvc/spandsp.h
@@ -117,9 +117,7 @@
 #include <spandsp/t81_t82_arith_coding.h>
 #include <spandsp/t85.h>
 #include <spandsp/t42.h>
-#if defined(SPANDSP_SUPPORT_T43)
 #include <spandsp/t43.h>
-#endif
 #include <spandsp/t30.h>
 #include <spandsp/t30_api.h>
 #include <spandsp/t30_fcf.h>