diff --git a/lib/gsmsplitter.js b/lib/gsmsplitter.js
index 2219bdb..11c7edb 100644
--- a/lib/gsmsplitter.js
+++ b/lib/gsmsplitter.js
@@ -1,11 +1,11 @@
-var gsmvalidator = require('./gsmvalidator');
+var gsmValidator = require('./gsmvalidator');
 
 function isHighSurrogate(code) {
   return code >= 0xD800 && code <= 0xDBFF;
 }
 
 module.exports.split = function (message, options) {
-  options = options || { summary: false };
+  options = options || { supportShiftTables: false, summary: false };
 
   if (message === '') {
     return {
@@ -26,7 +26,6 @@ module.exports.split = function (message, options) {
   var totalLength = 0;
   var messagePart = '';
 
-
   function bank() {
     var msg = {
       content: options.summary ? undefined : messagePart,
@@ -42,15 +41,29 @@ module.exports.split = function (message, options) {
     messagePart = '';
   }
 
+  function validateCharacter(character) {
+    if (options.supportShiftTables) {
+      return gsmValidator.validateCharacterWithShiftTable(character);
+    }
+    return gsmValidator.validateCharacter(character);
+  }
+
+  function validateExtendedCharacter(character) {
+    if (options.supportShiftTables) {
+      return gsmValidator.validateExtendedCharacterWithShiftTable(character);
+    }
+    return gsmValidator.validateExtendedCharacter(character);
+  }
+
   for (var i = 0, count = message.length; i < count; i++) {
     var c = message.charAt(i);
 
-    if (!gsmvalidator.validateCharacter(c)) {
+    if (!validateCharacter(c)) {
       if (isHighSurrogate(c.charCodeAt(0))) {
         i++;
       }
       c = '\u0020';
-    } else if (gsmvalidator.validateExtendedCharacter(c)) {
+    } else if (validateExtendedCharacter(c)) {
       if (bytes === 152) bank();
       bytes++;
     }
diff --git a/lib/gsmvalidator.js b/lib/gsmvalidator.js
index 38d0750..621f332 100644
--- a/lib/gsmvalidator.js
+++ b/lib/gsmvalidator.js
@@ -1,58 +1,164 @@
-// '@£$¥èéùìòÇ\nØø\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ\x20!"#¤%&\'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüà\f^{}\\[~]|€'
-var GSM_charCodes = [
-  10,12,13,32,33,34,35,36,
-  37,38,39,40,41,42,43,44,
-  45,46,47,48,49,50,51,52,
-  53,54,55,56,57,58,59,60,
-  61,62,63,64,65,66,67,68,
-  69,70,71,72,73,74,75,76,
-  77,78,79,80,81,82,83,84,
-  85,86,87,88,89,90,91,92,
-  93,94,95,97,98,99,100,101,
-  102,103,104,105,106,107,108,
-  109,110,111,112,113,114,115,
-  116,117,118,119,120,121,122,
-  123,124,125,126,161,163,164,
-  165,167,191,196,197,198,199,
-  201,209,214,216,220,223,224,
-  228,229,230,232,233,236,241,
-  242,246,248,249,252,915,916,
-  920,923,926,928,931,934,936,
-  937,8364
-];
-
-// '\f|^€{}[~]\\'
-var GSMe_charCodes = [12,91,92,93,94,123,124,125,126,8364];
-
-function existsInArray(code, array) {
-  var len = array.length;
-  var i = 0;
-  while (i < len) {
-    var e = array[i];
-    if (code === e) return true;
-    i++;
-  }
-  return false;
-}
-
-function validateCharacter(character) {
-  var code = character.charCodeAt(0);
-  return existsInArray(code, GSM_charCodes);
-}
-
-function validateMessage(message) {
-  for (var i = 0; i < message.length; i++) {
-    if (!validateCharacter(message.charAt(i)))
-      return false;
-  }
-  return true;
-}
-
-function validateExtendedCharacter(character) {
-  var code = character.charCodeAt(0);
-  return existsInArray(code, GSMe_charCodes);
-}
-
-module.exports.validateCharacter = validateCharacter;
-module.exports.validateMessage = validateMessage;
-module.exports.validateExtendedCharacter = validateExtendedCharacter;
\ No newline at end of file
+// '@£$¥èéùìòÇ\nØø\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ\x20!"#¤%&\'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüà\f^{}\\[~]|€'
+var GSM_charCodes = [
+  10,12,13,32,33,34,35,36,
+  37,38,39,40,41,42,43,44,
+  45,46,47,48,49,50,51,52,
+  53,54,55,56,57,58,59,60,
+  61,62,63,64,65,66,67,68,
+  69,70,71,72,73,74,75,76,
+  77,78,79,80,81,82,83,84,
+  85,86,87,88,89,90,91,92,
+  93,94,95,97,98,99,100,101,
+  102,103,104,105,106,107,108,
+  109,110,111,112,113,114,115,
+  116,117,118,119,120,121,122,
+  123,124,125,126,161,163,164,
+  165,167,191,196,197,198,199,
+  201,209,214,216,220,223,224,
+  228,229,230,232,233,236,241,
+  242,246,248,249,252,915,916,
+  920,923,926,928,931,934,936,
+  937,8364
+];
+
+// '\f|^€{}[~]\\'
+var GSMe_charCodes = [12,91,92,93,94,123,124,125,126,8364];
+
+// '@£$¥€éùıòÇ\nĞğ\rÅåΔ_ΦΓΛΩΠΨΣΘΞŞşßÉ\x20!"#¤%&\'()*+,-./0123456789:;<=>?İABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧçabcdefghijklmnopqrstuvwxyzäöñüà\f^{}\[~]|'
+var GSM_TR_charCodes = [
+    10,12,13,32,33,34,35,36,
+    37,38,39,40,41,42,43,44,
+    45,46,47,48,49,50,51,52,
+    53,54,55,56,57,58,59,60,
+    61,62,63,64,65,66,67,68,
+    69,70,71,72,73,74,75,76,
+    77,78,79,80,81,82,83,84,
+    85,86,87,88,89,90,91,92,
+    93,94,95,97,98,99,100,101,
+    102,103,104,105,106,107,108,
+    109,110,111,112,113,114,115,
+    116,117,118,119,120,121,122,
+    123,124,125,126,163,164,165,
+    167,196,197,199,201,209,214,
+    220,223,224,228,229,231,233,
+    241,242,246,249,252,286,287,
+    304,305,350,351,915,916,920,
+    923,926,928,931,934,936,937,
+    8364
+];
+
+// '\f^{}\[~]|'
+var GSMe_TR_charCodes = [12,91,92,93,94,123,124,125,126,286,287,304,305,350,351,8364];
+
+// '@£$¥èéùìòÇ\nØø\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ\x20!"#¤%&\'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüàç\f^{}\\[~]|ÁÍÓÚá€íóú'
+var GSM_ES_charCodes = [
+    10,12,13,32,33,34,35,36,
+    37,38,39,40,41,42,43,44,
+    45,46,47,48,49,50,51,52,
+    53,54,55,56,57,58,59,60,
+    61,62,63,64,65,66,67,68,
+    69,70,71,72,73,74,75,76,
+    77,78,79,80,81,82,83,84,
+    85,86,87,88,89,90,91,92,
+    93,94,95,97,98,99,100,101,
+    102,103,104,105,106,107,108,
+    109,110,111,112,113,114,115,
+    116,117,118,119,120,121,122,
+    123,124,125,126,161,163,164,
+    165,167,191,193,196,197,198,
+    199,201,205,209,211,214,216,
+    218,220,223,224,225,228,229,
+    230,231,232,233,236,237,241,
+    242,243,246,248,249,250,252,
+    915,916,920,923,926,928,931,
+    934,936,937,8364
+];
+
+// 'ç\f^{}\\[~]|ÁÍÓÚá€íóú'
+var GSMe_ES_charCodes = [12,91,92,93,94,123,124,125,126,193,205,211,218,225,231,237,243,250,8364];
+
+// '@£$¥êéúíóç\nÔô\rÁáΔ_ªÇÀ∞^\\€Ó|ÂâÊÉ\x20!"#º%&\'()*+,-./0123456789:;<=>?ÍABCDEFGHIJKLMNOPQRSTUVWXYZÃÕÚܧ~abcdefghijklmnopqrstuvwxyzãõ`üà\fΦΓ^ΩΠΨΣΘ{}\\[~]|'
+var GSM_PT_charCodes = [
+    10,12,13,32,33,34,35,36,
+    37,38,39,40,41,42,43,44,
+    45,46,47,48,49,50,51,52,
+    53,54,55,56,57,58,59,60,
+    61,62,63,64,65,66,67,68,
+    69,70,71,72,73,74,75,76,
+    77,78,79,80,81,82,83,84,
+    85,86,87,88,89,90,91,92,
+    93,94,95,96,97,98,99,100,
+    101,102,103,104,105,106,107,108,
+    109,110,111,112,113,114,115,116,
+    117,118,119,120,121,122,123,124,
+    125,126,163,165,167,170,186,192,
+    193,194,195,199,201,202,205,211,
+    212,213,218,220,224,225,226,227,
+    231,233,234,237,242,243,244,245,
+    250,252,915,916,920,928,931,934,
+    936,937,8364,8734
+];
+
+// '\fΦΓ^ΩΠΨΣΘ{}\\[~]|'
+var GSMe_PT_charCodes = [
+    12,91,92,93,94,123,124,125,
+    126,193,194,195,202,205,211,212,
+    213,218,225,226,227,231,234,237,
+    242,243,245,250,915,920,928,931,
+    934,936,937,8364
+];
+
+function existsInArray(code, array) {
+  var len = array.length;
+  var i = 0;
+  while (i < len) {
+    var e = array[i];
+    if (code === e) return true;
+    i++;
+  }
+  return false;
+}
+
+function validateCharacter(character) {
+    return existsInArray(character.charCodeAt(0), GSM_charCodes);
+}
+function validateCharacterWithShiftTable(character) {
+  var charCodes = GSM_charCodes.concat(GSM_TR_charCodes, GSM_ES_charCodes, GSM_PT_charCodes);
+  return existsInArray(character.charCodeAt(0), charCodes);
+}
+
+function validateMessageInCharCodesList(message, charCodes) {
+  for (var i = 0; i < message.length; i++) {
+    if (!existsInArray(message.charCodeAt(i), charCodes))
+      return false;
+  }
+
+  return true;
+}
+function validateMessage(message) {
+  return validateMessageInCharCodesList(message, GSM_charCodes);
+}
+function validateMessageWithShiftTable(message) {
+  var charCodes = [GSM_charCodes, GSM_TR_charCodes, GSM_ES_charCodes, GSM_PT_charCodes];
+  for (var i = 0; i < charCodes.length; i++) {
+    if (validateMessageInCharCodesList(message, charCodes[i]))
+      return true;
+  }
+
+  return false;
+}
+
+function validateExtendedCharacter(character) {
+  return existsInArray(character.charCodeAt(0), GSMe_charCodes);
+}
+function validateExtendedCharacterWithShiftTable(character) {
+    var charCodes = GSMe_charCodes.concat(GSMe_TR_charCodes, GSMe_ES_charCodes, GSMe_PT_charCodes);
+    return existsInArray(character.charCodeAt(0), charCodes);
+}
+
+module.exports.validateCharacter = validateCharacter;
+module.exports.validateCharacterWithShiftTable = validateCharacterWithShiftTable;
+module.exports.validateMessage = validateMessage;
+module.exports.validateMessageWithShiftTable = validateMessageWithShiftTable;
+module.exports.validateExtendedCharacter = validateExtendedCharacter;
+module.exports.validateExtendedCharacterWithShiftTable = validateExtendedCharacterWithShiftTable;
diff --git a/lib/index.js b/lib/index.js
index e8114bd..2bdc6f8 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -11,13 +11,21 @@ var UNICODE = module.exports.UNICODE = 'Unicode';
 var GSM = module.exports.GSM = 'GSM';
 
 module.exports.split = function (message, options) {
-  var characterset = options && options.characterset;
+  var characterSet = options && options.characterset;
 
   options = {
-    summary: options && options.summary
+    summary: options && options.summary,
+    supportShiftTables: options && options.supportShiftTables
   };
 
-  var isGsm = (characterset === undefined && gsmValidator.validateMessage(message)) || characterset === GSM;
+  function validateMessage(message) {
+    if (options.supportShiftTables) {
+      return gsmValidator.validateMessageWithShiftTable(message);
+    }
+    return gsmValidator.validateMessage(message);
+  }
+
+  var isGsm = (characterSet === undefined && validateMessage(message)) || characterSet === GSM;
   var splitResult, singleBytes, multiBytes, charBytes;
 
   if (isGsm) {
diff --git a/test/gsmvalidator.test.js b/test/gsmvalidator.test.js
index 775b2bb..30ef19c 100644
--- a/test/gsmvalidator.test.js
+++ b/test/gsmvalidator.test.js
@@ -13,6 +13,46 @@ describe('GSM Validator', function () {
 
   });
 
+  describe('Validating a message of every valid GSM Turkish shift table characters', function () {
+
+    it('should return true', function () {
+      var message = '@£$¥€éùıòÇ\nĞğ\rÅåΔ_ΦΓΛΩΠΨΣΘΞŞşßÉ\x20!"#¤%&\'()*+,-./0123456789:;<=>?İABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧçabcdefghijklmnopqrstuvwxyzäöñüà\f^{}\[~]|';
+      var result = gsmValidator.validateMessageWithShiftTable(message);
+      assert.strictEqual(result, true);
+    });
+
+  });
+
+  describe('Validating a message of every valid GSM Spanish shift table characters', function () {
+
+    it('should return true', function () {
+      var message = '@£$¥èéùìòÇ\nØø\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ\x20!"#¤%&\'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüàç\f^{}\\[~]|ÁÍÓÚá€íóú';
+      var result = gsmValidator.validateMessageWithShiftTable(message);
+      assert.strictEqual(result, true);
+    });
+
+  });
+
+  describe('Validating a message of every valid GSM Portuguese shift table characters', function () {
+
+    it('should return true', function () {
+      var message = '@£$¥êéúíóç\nÔô\rÁáΔ_ªÇÀ∞^\\€Ó|ÂâÊÉ\x20!"#º%&\'()*+,-./0123456789:;<=>?ÍABCDEFGHIJKLMNOPQRSTUVWXYZÃÕÚܧ~abcdefghijklmnopqrstuvwxyzãõ`üà\fΦΓ^ΩΠΨΣΘ{}\\[~]|';
+      var result = gsmValidator.validateMessageWithShiftTable(message);
+      assert.strictEqual(result, true);
+    });
+
+  });
+
+  describe('Validating a message of mixed valid GSM shift tables', function () {
+
+    it('should return false', function () {
+      var message = '∞Ø';
+      var result = gsmValidator.validateMessageWithShiftTable(message);
+      assert.strictEqual(result, false);
+    });
+
+  });
+
   describe('Validating a message of one GSM character', function () {
 
     it('should return true', function () {
@@ -47,6 +87,45 @@ describe('GSM Validator', function () {
 
   });
 
+  describe('Validating all GSM turkish characters', function () {
+
+    var gsm = '@£$¥€éùıòÇ\nĞğ\rÅåΔ_ΦΓΛΩΠΨΣΘΞŞşßÉ\x20!"#¤%&\'()*+,-./0123456789:;<=>?İABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧçabcdefghijklmnopqrstuvwxyzäöñüà\f^{}\[~]|';
+
+    it('should return true', function () {
+      for (var i = 0; i < gsm.length; i++) {
+        var result = gsmValidator.validateCharacterWithShiftTable(gsm[i]);
+        assert.strictEqual(result, true, 'checking character "' + gsm[i] + '"');
+      }
+    });
+
+  });
+
+  describe('Validating all GSM spanish characters', function () {
+
+    var gsm = '@£$¥èéùìòÇ\nØø\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ\x20!"#¤%&\'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüàç\f^{}\\[~]|ÁÍÓÚá€íóú';
+
+    it('should return true', function () {
+      for (var i = 0; i < gsm.length; i++) {
+        var result = gsmValidator.validateCharacterWithShiftTable(gsm[i]);
+        assert.strictEqual(result, true, 'checking character "' + gsm[i] + '"');
+      }
+    });
+
+  });
+
+  describe('Validating all GSM portuguese characters', function () {
+
+    var gsm = '@£$¥êéúíóç\nÔô\rÁáΔ_ªÇÀ∞^\\€Ó|ÂâÊÉ\x20!"#º%&\'()*+,-./0123456789:;<=>?ÍABCDEFGHIJKLMNOPQRSTUVWXYZÃÕÚܧ~abcdefghijklmnopqrstuvwxyzãõ`üà\fΦΓ^ΩΠΨΣΘ{}\\[~]|';
+
+    it('should return true', function () {
+      for (var i = 0; i < gsm.length; i++) {
+        var result = gsmValidator.validateCharacterWithShiftTable(gsm[i]);
+        assert.strictEqual(result, true, 'checking character "' + gsm[i] + '"');
+      }
+    });
+
+  });
+
   describe('Validating a non-GSM character', function () {
 
     it('should return false', function () {
@@ -74,4 +153,4 @@ describe('GSM Validator', function () {
 
   });
 
-});
\ No newline at end of file
+});