Added UNKNOWN_METHOD_E in enum Method (Required by Codec)

		  REFER_E, // [3515]

		  UPDATE_E, // [3311]

		  MESSAGE_E, // [3428]

		  INFO_E	// [2976]

		  INFO_E,	// [2976]

		  UNKNOWN_METHOD_E

		  }

      // [20.1, 20.3, 20.4, 20.7, 20.9, 20.10, 20.11, 20.18, 20.20, 20.27, 20.28, 20.30, 20.31,

		Payload 		payload optional

	  }

    }  with { encode "SIPCodec" }// end group RequestTypes

    }  //with { encode "SIPCodec" }// end group RequestTypes

    group ResponseTypes

    {

		MessageBody		messageBody optional,

        Payload			payload	    optional

      } 

    } with { encode "SIPCodec" }// end group ResponseTypes

    } //with { encode "SIPCodec" }// end group ResponseTypes

    // This MSG type is defined for sending synctactic variations, ans syntactically

    // erroneous messages, and receving messages failed parsing.