--- func_strings.c.orig 2006-01-14 20:06:44.000000000 +0100
+++ func_strings.c      2006-03-07 13:50:03.000000000 +0100
@@ -27,6 +27,7 @@
 #include <string.h>
 #include <sys/types.h>
 #include <regex.h>
+#include <ctype.h>

 #include "asterisk.h"

@@ -227,3 +228,68 @@
        .read = function_eval,
 };

+static char *function_lcase(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
+{
+       int i = 0;
+        while (data[i])
+        {
+          if (data[i] & 0x80)
+             {
+                unsigned char c = data[i];
+                if (c >= 192 && c <= 223)
+                  {
+                     c += 32;
+                     data[i] = (char)c;
+                     }
+                    }
+       else
+             {
+                data[i] = tolower(data[i]);
+                    }
+               i++;
+               }
+   return data;
+}
+
+#ifndef BUILTIN_FUNC
+static
+#endif
+struct ast_custom_function lcase_function = {
+       .name = "LCASE",
+       .synopsis = "Returns the string in lowercase",
+       .syntax = "LCASE(<string>)",
+       .read = function_lcase,
+};
+
+static char *function_ucase(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
+{
+    int i = 0;
+    while (data[i])
+     {
+       if (data[i] & 0x80)
+         {
+                unsigned char c = data[i];
+                if (c >= 224)
+              {
+                 c -= 32;
+                 data[i] = (char)c;
+              }
+         }
+       else
+         {
+                data[i] = toupper(data[i]);
+         }
+               i++;
+     }
+   return data;
+}
+
+#ifndef BUILTIN_FUNC
+static
+#endif
+struct ast_custom_function ucase_function = {
+       .name = "UCASE",
+       .synopsis = "Returns the string in uppercase",
+       .syntax = "UCASE(<string>)",
+       .read = function_ucase,
+};