SIM driver question

Hi. Is there any reason why in the sim_handler()  function,  in     case SIM_STATE_TX_DATA:         if (!txDoneFlag)             break; /* wait until data is transmitted */         /* Disable all interrupt driven functions */         writew(0xFF, REG_SIM_MASKIT);         /* Ignore waiting char for RUN GSM ALGORITHM */         /* TODO: implement proper handling of the "Procedure Bytes"            than this is no longer needed */         if(sim_data[1] == 0x88)             sim_ignore_waiting_char = 1;         sim_state = SIM_STATE_RX_STATUS;         calypso_sim_receive(response + length + 1, 2);         break; we do "calypso_sim_receive(response + length + 1, 2);" instead of   "calypso_sim_receive(response + 1, 2);". Seems an unnecessary overhead sending back some junk chars there. Or I'm missing something? Cheers, Mihai.