anchor.diff:  		2
   	end.
   
  +encode_gt(undefined) ->
  +	{?SCCP_GTI_NO_GT, <<>>};
   encode_gt(#global_title{gti = GTind, phone_number = PhoneNum,
   			nature_of_addr_ind = Nature,
   			trans_type = TransType, encoding = _EncOrig,
  
positive.code: 	{GTind, GTbin} = encode_gt(GT),
  	{SSNind, SSNbin} = encode_ssn(SSN),
  	{PCind, PCbin} = encode_pc(PointCode),
  	<<ResNatUse:1, RoutInd:1, GTind:4, SSNind:1, PCind:1, PCbin/binary, SSNbin/binary, GTbin/binary>>.
  
  
  encode_sccp_opt({OptNum, {DataBinLen, DataBin}}) when is_integer(OptNum) ->
  
negative.code: 			{1, <<SSN:8>>}
  	end.
  
  undef_or_true(Foo) ->
  	case Foo of
  		undefined -> 0;
  		0 -> 0;
  		_ -> 1
  	end.
  
  
  encode_sccp_addr(#sccp_addr{res_nat_use = ResNatUse,
  			    route_on_ssn = RoutInd,
  			    point_code = PointCode,
  