ESP32 communication DLMS meter(L&T)

hi
i am unable to communicate with meter using esp3.
i even changed this function .
Client.init(true, 32, 1, DLMS_AUTHENTICATION_LOW, YOUR_PASSWORD, DLMS_INTERFACE_TYPE_HDLC);

the error i am getting is

com_initializeConnection failed

in the code exactly at this logic
//Initialize connection.
ret = com_initializeConnection();
if (ret != DLMS_ERROR_CODE_OK)
{
Serial.println("INSIDE DLMS_ERROR_CODE_OK");
GXTRACE_INT(GET_STR_FROM_EEPROM("com_initializeConnection failed"), ret);
return ret;

}

any one please let me know where i am doing wrong.