diff --git a/src/GatewayChecksum.php b/src/GatewayChecksum.php
index d66a862..f7e25ec 100644
--- a/src/GatewayChecksum.php
+++ b/src/GatewayChecksum.php
@@ -8,8 +8,8 @@
 //
 class GatewayChecksum {
   public static $checksum = "";
-  public static $baseChecksum = "c6b73c8b32c1df76dde8aa4e73ddadc4";
-  public static $versionNo = "P6.17";  //
+  public static $baseChecksum = "5096ece7e2320e91d897f71e92701a93";
+  public static $versionNo = "P6.18";  //
 
 //////////////////////////////////////////////////////////////////////
 //
@@ -27,7 +27,7 @@ static function SetVersion()
 		  md5_file($dirName . "/GatewayCodes.php");
     GatewayChecksum::$checksum = md5($baseString);
     if (GatewayChecksum::$checksum != GatewayChecksum::$baseChecksum)
-      GatewayChecksum::$versionNo = "P6.17m";
+      GatewayChecksum::$versionNo = "P6.18m";
   }
 }
 
diff --git a/src/GatewayResponse.php b/src/GatewayResponse.php
index 8839606..03be182 100644
--- a/src/GatewayResponse.php
+++ b/src/GatewayResponse.php
@@ -170,6 +170,9 @@ static function MERCHANT_PRODUCT_ID() { return "merchantProductID"; }
   static function MERCHANT_SITE_ID() { return "merchantSiteID"; }
   static function PAREQ() { return "PAREQ"; }
   static function REASON_CODE() { return "reasonCode"; }
+  static function REASON_CODE_NAME() { return "reasonCodeName"; }
+  static function MERCHANT_REASON_CODE_DESCRIPTION() { return "merchantReasonCodeDescription"; }
+  static function CARDHOLDER_REASON_CODE_DESCRIPTION() { return "cardholderReasonCodeDescription"; }
   static function REBILL_AMOUNT() { return "rebillAmount"; }
   static function REBILL_DATE() { return "rebillDate"; }
   static function REBILL_END_DATE() { return "rebillEndDate"; }
diff --git a/src/GatewayService.php b/src/GatewayService.php
index 22d72a2..c7d3e22 100644
--- a/src/GatewayService.php
+++ b/src/GatewayService.php
@@ -703,6 +703,9 @@ function PerformCURLTransaction($host, $request, $response)
       $response->Set(GatewayResponse::EXCEPTION(), "curl_init() error");
       $response->SetResults(GatewayCodes__RESPONSE_REQUEST_ERROR,
 			    GatewayCodes__REASON_INVALID_URL);
+      $response->Set(GatewayResponse::REASON_CODE_NAME(), 'REASON_INVALID_URL');
+      $response->Set(GatewayResponse::MERCHANT_REASON_CODE_DESCRIPTION(), 'Invalid URL');
+      $response->Set(GatewayResponse::CARDHOLDER_REASON_CODE_DESCRIPTION(), 'Invalid URL');
       return GatewayCodes__RESPONSE_REQUEST_ERROR;
     }
 
@@ -790,17 +793,29 @@ function PerformCURLTransaction($host, $request, $response)
         case CURLE_SSL_CONNECT_ERROR:		// Connection failures
 	case CURLE_COULDNT_CONNECT:
           $internalCode = GatewayCodes__REASON_UNABLE_TO_CONNECT;
+          $internalCodeName = 'REASON_UNABLE_TO_CONNECT';
+          $internalMerchantCodeDescription = 'Unable to Connect';
+          $internalCardholderCodeDescription = 'Unable to Connect';
 	  break;				// Done with request
         case CURLE_SEND_ERROR:			// Failed sending data
           $internalCode = GatewayCodes__REASON_REQUEST_XMIT_ERROR;
+          $internalCodeName = 'REASON_REQUEST_XMIT_ERROR';
+          $internalMerchantCodeDescription = 'Transmit Error';
+          $internalCardholderCodeDescription = 'Transmit Error';
 	  break;				// Done with request
         case CURLE_OPERATION_TIMEOUTED:		// Time-out reached
           $internalCode = GatewayCodes__REASON_RESPONSE_READ_TIMEOUT;
+          $internalCodeName = 'REASON_RESPONSE_READ_TIMEOUT';
+          $internalMerchantCodeDescription = 'Read Timeout';
+          $internalCardholderCodeDescription = 'Read Timeout';
 	  break;				// Done with request
         case CURLE_RECV_ERROR:			// Failed reading data
         case CURLE_READ_ERROR:
         default:
-	  $internalCode = GatewayCodes__REASON_RESPONSE_READ_ERROR;
+          $internalCode = GatewayCodes__REASON_RESPONSE_READ_ERROR;
+          $internalCodeName = 'REASON_RESPONSE_READ_ERROR';
+          $internalMerchantCodeDescription = 'Read Error';
+          $internalCardholderCodeDescription = 'Read Error';
       }
 
 //
@@ -810,6 +825,9 @@ function PerformCURLTransaction($host, $request, $response)
         $response->Set(GatewayResponse::EXCEPTION(), $errorString);
       $response->SetResults(GatewayCodes__RESPONSE_SYSTEM_ERROR,
 			    $internalCode);
+      $response->Set(GatewayResponse::REASON_CODE_NAME(), $internalCodeName);
+      $response->Set(GatewayResponse::MERCHANT_REASON_CODE_DESCRIPTION(), $internalMerchantCodeDescription);
+      $response->Set(GatewayResponse::CARDHOLDER_REASON_CODE_DESCRIPTION(), $internalCardholderCodeDescription);
       return GatewayCodes__RESPONSE_SYSTEM_ERROR;
     }
 
diff --git a/src/TestAuthOnly.php b/src/TestAuthOnly.php
index 7454020..95591c7 100644
--- a/src/TestAuthOnly.php
+++ b/src/TestAuthOnly.php
@@ -80,6 +80,9 @@
   print "Auth-Only succeeded\n";
   print "Response Code: " .  $response->Get(GatewayResponse::RESPONSE_CODE()) . "\n";
   print "Reason Code: " .  $response->Get(GatewayResponse::REASON_CODE()) . "\n";
+  print "Reason Code Name: " .  $response->Get(GatewayResponse::REASON_CODE_NAME()) . "\n";
+  print "Merchant Reason Code Description: " .  $response->Get(GatewayResponse::MERCHANT_REASON_CODE_DESCRIPTION()) . "\n";
+  print "Cardholder Reason Code Description: " .  $response->Get(GatewayResponse::CARDHOLDER_REASON_CODE_DESCRIPTION()) . "\n";
   print "Auth No: " . $response->Get(GatewayResponse::AUTH_NO()) . "\n";
   print "AVS: " . $response->Get(GatewayResponse::AVS_RESPONSE()) . "\n";
   print "CVV2: " . $response->Get(GatewayResponse::CVV2_CODE()) . "\n";
@@ -97,6 +100,12 @@
 	$response->Get(GatewayResponse::RESPONSE_CODE()) . "\n";
   print "Reason Code: " .
 	$response->Get(GatewayResponse::REASON_CODE()) . "\n";
+  print "Reason Code Name: " .
+    $response->Get(GatewayResponse::REASON_CODE_NAME()) . "\n";
+  print "Merchant Reason Code Description: " .
+    $response->Get(GatewayResponse::MERCHANT_REASON_CODE_DESCRIPTION()) . "\n";
+  print "Cardholder Reason Code Description: " .
+      $response->Get(GatewayResponse::CARDHOLDER_REASON_CODE_DESCRIPTION()) . "\n";
   print "Exception: " .
 	$response->Get(GatewayResponse::EXCEPTION()) . "\n";
   print "Scrub: " .