Examples with SerialModemDevice org.eclipse.kura.net.modem.SerialModemDevice used on opensource projects

Example 1 with SerialModemDevice

use of org.eclipse.kura.net.modem.SerialModemDevice in project kura by eclipse.

the class NetworkServiceImpl method handleEvent.

@Override
public void handleEvent(Event event) {
    s_logger.debug("handleEvent() :: topic: {}", event.getTopic());
    String topic = event.getTopic();
    if (topic.equals(UsbDeviceAddedEvent.USB_EVENT_DEVICE_ADDED_TOPIC)) {
        // validate mandatory properties
        if (event.getProperty(UsbDeviceEvent.USB_EVENT_VENDOR_ID_PROPERTY) == null) {
            return;
        }
        if (event.getProperty(UsbDeviceEvent.USB_EVENT_PRODUCT_ID_PROPERTY) == null) {
            return;
        }
        if (event.getProperty(UsbDeviceEvent.USB_EVENT_USB_PORT_PROPERTY) == null) {
            return;
        }
        if (event.getProperty(UsbDeviceEvent.USB_EVENT_RESOURCE_PROPERTY) == null) {
            return;
        }
        // do we care?
        final SupportedUsbModemInfo modemInfo = SupportedUsbModemsInfo.getModem((String) event.getProperty(UsbDeviceEvent.USB_EVENT_VENDOR_ID_PROPERTY), (String) event.getProperty(UsbDeviceEvent.USB_EVENT_PRODUCT_ID_PROPERTY), (String) event.getProperty(UsbDeviceEvent.USB_EVENT_PRODUCT_NAME_PROPERTY));
        if (modemInfo != null) {
            // Found one - see if we have some info for it.
            // Also check if we are getting more devices than expected.
            // This can happen if all the modem resources cannot be removed from the OS or from Kura.
            // In this case we did not receive an UsbDeviceRemovedEvent and we did not post
            // an ModemRemovedEvent. Should we do it here?
            List<? extends UsbModemDriver> drivers = modemInfo.getDeviceDrivers();
            for (UsbModemDriver driver : drivers) {
                try {
                    driver.install();
                } catch (Exception e) {
                    s_logger.error("handleEvent() :: Failed to install modem device driver {} - {}", driver.getName(), e);
                }
            }
            UsbModemDevice usbModem = this.m_usbModems.get(event.getProperty(UsbDeviceEvent.USB_EVENT_USB_PORT_PROPERTY));
            boolean createNewUsbModemDevice = false;
            if (usbModem == null) {
                createNewUsbModemDevice = true;
            } else if (modemInfo.getNumTtyDevs() > 0 && modemInfo.getNumBlockDevs() > 0) {
                if (usbModem.getTtyDevs().size() >= modemInfo.getNumTtyDevs() && usbModem.getBlockDevs().size() >= modemInfo.getNumBlockDevs()) {
                    createNewUsbModemDevice = true;
                }
            } else if (modemInfo.getNumTtyDevs() > 0 && usbModem.getTtyDevs().size() >= modemInfo.getNumTtyDevs() || modemInfo.getNumBlockDevs() > 0 && usbModem.getBlockDevs().size() >= modemInfo.getNumBlockDevs()) {
                createNewUsbModemDevice = true;
            }
            if (createNewUsbModemDevice) {
                if (usbModem == null) {
                    s_logger.debug("handleEvent() :: Modem not found. Create one");
                } else {
                    s_logger.debug("handleEvent() :: Found modem with too many resources: {}. Create a new one", usbModem);
                }
                usbModem = new UsbModemDevice((String) event.getProperty(UsbDeviceEvent.USB_EVENT_VENDOR_ID_PROPERTY), (String) event.getProperty(UsbDeviceEvent.USB_EVENT_PRODUCT_ID_PROPERTY), (String) event.getProperty(UsbDeviceEvent.USB_EVENT_MANUFACTURER_NAME_PROPERTY), (String) event.getProperty(UsbDeviceEvent.USB_EVENT_PRODUCT_NAME_PROPERTY), (String) event.getProperty(UsbDeviceEvent.USB_EVENT_BUS_NUMBER_PROPERTY), (String) event.getProperty(UsbDeviceEvent.USB_EVENT_DEVICE_PATH_PROPERTY));
            }
            String resource = (String) event.getProperty(UsbDeviceEvent.USB_EVENT_RESOURCE_PROPERTY);
            s_logger.debug("handleEvent() :: Adding resource: {} for: {}", resource, usbModem.getUsbPort());
            if (resource.contains("tty")) {
                usbModem.addTtyDev(resource);
            } else {
                usbModem.addBlockDev(resource);
            }
            this.m_usbModems.put(usbModem.getUsbPort(), usbModem);
            // At this point, we should have some modems - display them
            s_logger.info("handleEvent() :: Modified modem (Added resource): {}", usbModem);
            s_logger.debug("handleEvent() :: usbModem.getTtyDevs().size()={}, modemInfo.getNumTtyDevs()={}", usbModem.getTtyDevs().size(), modemInfo.getNumTtyDevs());
            s_logger.debug("handleEvent() :: usbModem.getBlockDevs().size()={}, modemInfo.getNumBlockDevs()={}", usbModem.getBlockDevs().size(), modemInfo.getNumBlockDevs());
            // Check for correct number of resources
            if (usbModem.getTtyDevs().size() == modemInfo.getNumTtyDevs() && usbModem.getBlockDevs().size() == modemInfo.getNumBlockDevs()) {
                s_logger.info("handleEvent() :: posting ModemAddedEvent -- USB_EVENT_DEVICE_ADDED_TOPIC: {}", usbModem);
                this.m_eventAdmin.postEvent(new ModemAddedEvent(usbModem));
                this.m_addedModems.add(usbModem.getUsbPort());
                if (OS_VERSION != null && TARGET_NAME != null && OS_VERSION.equals(KuraConstants.Mini_Gateway.getImageName() + "_" + KuraConstants.Mini_Gateway.getImageVersion()) && TARGET_NAME.equals(KuraConstants.Mini_Gateway.getTargetName()) || OS_VERSION.equals(KuraConstants.Reliagate_10_11.getImageName() + "_" + KuraConstants.Reliagate_10_11.getImageVersion()) && TARGET_NAME.equals(KuraConstants.Reliagate_10_11.getTargetName())) {
                    if (this.m_serialModem != null) {
                        if (SupportedUsbModemInfo.Telit_HE910_D.getVendorId().equals(usbModem.getVendorId()) && SupportedUsbModemInfo.Telit_HE910_D.getProductId().equals(usbModem.getProductId())) {
                            s_logger.info("handleEvent() :: Removing {} from addedModems", this.m_serialModem.getProductName());
                            this.m_addedModems.remove(this.m_serialModem.getProductName());
                        }
                    }
                }
            }
        }
    /*
             * System.out.println("ADDED Device: " + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_VENDOR_ID_PROPERTY)
             * + ":" + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_PRODUCT_ID_PROPERTY));
             * System.out.println("\t" + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_RESOURCE_PROPERTY));
             * System.out.println("\t" + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_MANUFACTURER_NAME_PROPERTY));
             * System.out.println("\t" + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_PRODUCT_NAME_PROPERTY));
             * System.out.println("\t" + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_USB_PORT_PROPERTY));
             */
    } else if (topic.equals(UsbDeviceRemovedEvent.USB_EVENT_DEVICE_REMOVED_TOPIC)) {
        // validate mandatory properties
        if (event.getProperty(UsbDeviceEvent.USB_EVENT_VENDOR_ID_PROPERTY) == null) {
            return;
        }
        if (event.getProperty(UsbDeviceEvent.USB_EVENT_PRODUCT_ID_PROPERTY) == null) {
            return;
        }
        if (event.getProperty(UsbDeviceEvent.USB_EVENT_USB_PORT_PROPERTY) == null) {
            return;
        }
        // do we care?
        SupportedUsbModemInfo modemInfo = SupportedUsbModemsInfo.getModem((String) event.getProperty(UsbDeviceEvent.USB_EVENT_VENDOR_ID_PROPERTY), (String) event.getProperty(UsbDeviceEvent.USB_EVENT_PRODUCT_ID_PROPERTY), (String) event.getProperty(UsbDeviceEvent.USB_EVENT_PRODUCT_NAME_PROPERTY));
        if (modemInfo != null) {
            // found one - remove if it exists
            UsbModemDevice usbModem = this.m_usbModems.remove(event.getProperty(UsbDeviceEvent.USB_EVENT_USB_PORT_PROPERTY));
            if (usbModem != null) {
                s_logger.info("handleEvent() :: Removing modem: {}", usbModem);
                this.m_addedModems.remove(usbModem.getUsbPort());
                Map<String, String> properties = new HashMap<String, String>();
                properties.put(UsbDeviceEvent.USB_EVENT_BUS_NUMBER_PROPERTY, usbModem.getUsbBusNumber());
                properties.put(UsbDeviceEvent.USB_EVENT_DEVICE_PATH_PROPERTY, usbModem.getUsbDevicePath());
                properties.put(UsbDeviceEvent.USB_EVENT_USB_PORT_PROPERTY, usbModem.getUsbPort());
                properties.put(UsbDeviceEvent.USB_EVENT_VENDOR_ID_PROPERTY, usbModem.getVendorId());
                properties.put(UsbDeviceEvent.USB_EVENT_PRODUCT_ID_PROPERTY, usbModem.getProductId());
                properties.put(UsbDeviceEvent.USB_EVENT_MANUFACTURER_NAME_PROPERTY, usbModem.getManufacturerName());
                properties.put(UsbDeviceEvent.USB_EVENT_PRODUCT_NAME_PROPERTY, usbModem.getProductName());
                this.m_eventAdmin.postEvent(new ModemRemovedEvent(properties));
            }
        }
    /*
             * System.out.println("REMOVED Device: " +
             * event.getProperty(UsbDeviceAddedEvent.USB_EVENT_VENDOR_ID_PROPERTY) + ":" +
             * event.getProperty(UsbDeviceAddedEvent.USB_EVENT_PRODUCT_ID_PROPERTY));
             * System.out.println("\t" + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_RESOURCE_PROPERTY));
             * System.out.println("\t" + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_MANUFACTURER_NAME_PROPERTY));
             * System.out.println("\t" + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_PRODUCT_NAME_PROPERTY));
             * System.out.println("\t" + event.getProperty(UsbDeviceAddedEvent.USB_EVENT_USB_PORT_PROPERTY));
             */
    } else if (topic.equals(SerialModemAddedEvent.SERIAL_MODEM_EVENT_ADDED_TOPIC)) {
        SerialModemAddedEvent serialModemAddedEvent = (SerialModemAddedEvent) event;
        SupportedSerialModemInfo serialModemInfo = serialModemAddedEvent.getSupportedSerialModemInfo();
        if (serialModemInfo != null) {
            if (OS_VERSION != null && TARGET_NAME != null && OS_VERSION.equals(KuraConstants.Mini_Gateway.getImageName() + "_" + KuraConstants.Mini_Gateway.getImageVersion()) && TARGET_NAME.equals(KuraConstants.Mini_Gateway.getTargetName()) || OS_VERSION.equals(KuraConstants.Reliagate_10_11.getImageName() + "_" + KuraConstants.Reliagate_10_11.getImageVersion()) && TARGET_NAME.equals(KuraConstants.Reliagate_10_11.getTargetName())) {
                if (this.m_usbModems.isEmpty()) {
                    this.m_serialModem = new SerialModemDevice(serialModemInfo.getModemName(), serialModemInfo.getManufacturerName(), serialModemInfo.getDriver().getComm().getSerialPorts());
                    if (this.m_serialModem != null) {
                        s_logger.debug("handleEvent() :: posting ModemAddedEvent for serial modem: {}", this.m_serialModem.getProductName());
                        this.m_eventAdmin.postEvent(new ModemAddedEvent(this.m_serialModem));
                        this.m_addedModems.add(this.m_serialModem.getProductName());
                    }
                } else {
                    s_logger.info("handleEvent() :: Ignoring {} modem since it has already been detected as a USB device", serialModemInfo.getModemName());
                }
            } else {
                this.m_serialModem = new SerialModemDevice(serialModemInfo.getModemName(), serialModemInfo.getManufacturerName(), serialModemInfo.getDriver().getComm().getSerialPorts());
                if (this.m_serialModem != null) {
                    s_logger.debug("handleEvent() :: posting ModemAddedEvent for serial modem: {}", this.m_serialModem.getProductName());
                    this.m_eventAdmin.postEvent(new ModemAddedEvent(this.m_serialModem));
                    this.m_addedModems.add(this.m_serialModem.getProductName());
                }
            }
        }
    } else {
        s_logger.error("handleEvent() :: Unexpected event topic: {}", topic);
    }
}

Example 2 with SerialModemDevice

use of org.eclipse.kura.net.modem.SerialModemDevice in project kura by eclipse.

the class NetworkServiceImpl method getModemPppPort.

/**
 * Given a usb port address, look up the associated ppp interface name
 *
 * @throws KuraException
 */
@Override
public String getModemPppPort(ModemDevice modemDevice) throws KuraException {
    String deviceName = null;
    String modemId = null;
    if (modemDevice instanceof UsbModemDevice) {
        UsbModemDevice usbModem = (UsbModemDevice) modemDevice;
        SupportedUsbModemInfo modemInfo = SupportedUsbModemsInfo.getModem(usbModem.getVendorId(), usbModem.getProductId(), usbModem.getProductName());
        deviceName = modemInfo.getDeviceName();
        modemId = usbModem.getUsbPort();
    } else if (modemDevice instanceof SerialModemDevice) {
        SerialModemDevice serialModem = (SerialModemDevice) modemDevice;
        deviceName = serialModem.getProductName();
        modemId = serialModem.getProductName();
    }
    // find a matching config file in the ppp peers directory
    File peersDir = new File(PPP_PEERS_DIR);
    if (peersDir.isDirectory()) {
        File[] peerFiles = peersDir.listFiles();
        for (File peerFile : peerFiles) {
            String peerFilename = peerFile.getName();
            if (peerFilename.startsWith(deviceName) && peerFilename.endsWith(/* usbPort */
            modemId)) {
                BufferedReader br = null;
                try {
                    br = new BufferedReader(new FileReader(peerFile));
                    String line = null;
                    StringBuilder sbIfaceName = null;
                    while ((line = br.readLine()) != null) {
                        if (line.startsWith("unit")) {
                            sbIfaceName = new StringBuilder("ppp");
                            sbIfaceName.append(line.substring("unit".length()).trim());
                            break;
                        }
                    }
                    return sbIfaceName.toString();
                } catch (Exception e) {
                    s_logger.error("failed to parse peers file - {}", e);
                } finally {
                    if (br != null) {
                        try {
                            br.close();
                        } catch (IOException e) {
                            s_logger.error("failed to close buffered reader - {}", e);
                        }
                    }
                }
                break;
            }
        }
    }
    return null;
}

Example 3 with SerialModemDevice

use of org.eclipse.kura.net.modem.SerialModemDevice in project kura by eclipse.

the class NetworkServiceImpl method getModemInterface.

private ModemInterface<ModemInterfaceAddress> getModemInterface(String interfaceName, boolean isUp, ModemDevice modemDevice) throws KuraException {
    ModemInterfaceImpl<ModemInterfaceAddress> modemInterface = new ModemInterfaceImpl<ModemInterfaceAddress>(interfaceName);
    modemInterface.setModemDevice(modemDevice);
    if (modemDevice instanceof UsbModemDevice) {
        UsbModemDevice usbModemDevice = (UsbModemDevice) modemDevice;
        SupportedUsbModemInfo supportedUsbModemInfo = null;
        supportedUsbModemInfo = SupportedUsbModemsInfo.getModem(usbModemDevice.getVendorId(), usbModemDevice.getProductId(), usbModemDevice.getProductName());
        modemInterface.setTechnologyTypes(supportedUsbModemInfo.getTechnologyTypes());
        modemInterface.setUsbDevice((UsbModemDevice) modemDevice);
    } else if (modemDevice instanceof SerialModemDevice) {
        SupportedSerialModemInfo supportedSerialModemInfo = null;
        supportedSerialModemInfo = SupportedSerialModemsInfo.getModem();
        modemInterface.setTechnologyTypes(supportedSerialModemInfo.getTechnologyTypes());
    }
    int pppNum = 0;
    if (interfaceName.startsWith("ppp")) {
        pppNum = Integer.parseInt(interfaceName.substring(3));
    }
    modemInterface.setPppNum(pppNum);
    modemInterface.setManufacturer(modemDevice.getManufacturerName());
    modemInterface.setModel(modemDevice.getProductName());
    modemInterface.setModemIdentifier(modemDevice.getProductName());
    // these properties required net.admin packages
    modemInterface.setDriver(getDriver());
    modemInterface.setDriverVersion(getDriverVersion());
    modemInterface.setFirmwareVersion(getFirmwareVersion());
    modemInterface.setSerialNumber("unknown");
    modemInterface.setLoopback(false);
    modemInterface.setPointToPoint(true);
    modemInterface.setState(getState(interfaceName, isUp));
    modemInterface.setHardwareAddress(new byte[] { 0, 0, 0, 0, 0, 0 });
    LinuxIfconfig ifconfig = LinuxNetworkUtil.getInterfaceConfiguration(interfaceName);
    if (ifconfig != null) {
        modemInterface.setMTU(ifconfig.getMtu());
        modemInterface.setSupportsMulticast(ifconfig.isMulticast());
    }
    modemInterface.setUp(isUp);
    modemInterface.setVirtual(isVirtual());
    modemInterface.setNetInterfaceAddresses(getModemInterfaceAddresses(interfaceName, isUp));
    return modemInterface;
}

Example 4 with SerialModemDevice

use of org.eclipse.kura.net.modem.SerialModemDevice in project kura by eclipse.

the class ModemMonitorServiceImpl method trackModem.

private void trackModem(ModemDevice modemDevice) {
    Class<? extends CellularModemFactory> modemFactoryClass = null;
    if (modemDevice instanceof UsbModemDevice) {
        SupportedUsbModemInfo supportedUsbModemInfo = SupportedUsbModemsInfo.getModem((UsbModemDevice) modemDevice);
        UsbModemFactoryInfo usbModemFactoryInfo = SupportedUsbModemsFactoryInfo.getModem(supportedUsbModemInfo);
        modemFactoryClass = usbModemFactoryInfo.getModemFactoryClass();
    } else if (modemDevice instanceof SerialModemDevice) {
        SupportedSerialModemInfo supportedSerialModemInfo = SupportedSerialModemsInfo.getModem();
        SerialModemFactoryInfo serialModemFactoryInfo = SupportedSerialModemsFactoryInfo.getModem(supportedSerialModemInfo);
        modemFactoryClass = serialModemFactoryInfo.getModemFactoryClass();
    }
    if (modemFactoryClass != null) {
        CellularModemFactory modemFactoryService = null;
        try {
            try {
                Method getInstanceMethod = modemFactoryClass.getDeclaredMethod("getInstance", (Class<?>[]) null);
                getInstanceMethod.setAccessible(true);
                modemFactoryService = (CellularModemFactory) getInstanceMethod.invoke(null, (Object[]) null);
            } catch (Exception e) {
                s_logger.error("Error calling getInstance() method on " + modemFactoryClass.getName() + e);
            }
            // if unsuccessful in calling getInstance()
            if (modemFactoryService == null) {
                modemFactoryService = modemFactoryClass.newInstance();
            }
            String platform = null;
            if (this.m_systemService != null) {
                platform = this.m_systemService.getPlatform();
            }
            CellularModem modem = modemFactoryService.obtainCellularModemService(modemDevice, platform);
            try {
                HashMap<String, String> modemInfoMap = new HashMap<String, String>();
                modemInfoMap.put(ModemReadyEvent.IMEI, modem.getSerialNumber());
                modemInfoMap.put(ModemReadyEvent.IMSI, modem.getMobileSubscriberIdentity());
                modemInfoMap.put(ModemReadyEvent.ICCID, modem.getIntegratedCirquitCardId());
                modemInfoMap.put(ModemReadyEvent.RSSI, Integer.toString(modem.getSignalStrength()));
                s_logger.info("posting ModemReadyEvent on topic {}", ModemReadyEvent.MODEM_EVENT_READY_TOPIC);
                this.m_eventAdmin.postEvent(new ModemReadyEvent(modemInfoMap));
            } catch (Exception e) {
                s_logger.error("Failed to post the ModemReadyEvent - {}", e);
            }
            String ifaceName = this.m_networkService.getModemPppPort(modemDevice);
            List<NetConfig> netConfigs = null;
            if (ifaceName != null) {
                NetInterfaceConfig<? extends NetInterfaceAddressConfig> netInterfaceConfig = this.m_networkConfig.getNetInterfaceConfig(ifaceName);
                if (netInterfaceConfig == null) {
                    this.m_networkConfig = this.m_netConfigService.getNetworkConfiguration();
                    netInterfaceConfig = this.m_networkConfig.getNetInterfaceConfig(ifaceName);
                }
                if (netInterfaceConfig != null) {
                    netConfigs = getNetConfigs(netInterfaceConfig);
                    if (netConfigs != null && netConfigs.size() > 0) {
                        modem.setConfiguration(netConfigs);
                    }
                }
            }
            if (modemDevice instanceof UsbModemDevice) {
                this.m_modems.put(((UsbModemDevice) modemDevice).getUsbPort(), modem);
            } else if (modemDevice instanceof SerialModemDevice) {
                this.m_modems.put(modemDevice.getProductName(), modem);
            }
            if (modem instanceof EvdoCellularModem) {
                NetInterfaceStatus netIfaceStatus = getNetInterfaceStatus(netConfigs);
                if (netIfaceStatus == NetInterfaceStatus.netIPv4StatusEnabledWAN) {
                    if (modem.isGpsEnabled()) {
                        if (!disableModemGps(modem)) {
                            s_logger.error("trackModem() :: Failed to disable modem GPS, resetting modem ...");
                            modem.reset();
                            this.m_resetTimerStart = System.currentTimeMillis();
                        }
                    }
                    if (!((EvdoCellularModem) modem).isProvisioned()) {
                        s_logger.info("trackModem() :: The {} is not provisioned, will try to provision it ...", modem.getModel());
                        if (task != null && !task.isCancelled()) {
                            s_logger.info("trackModem() :: Cancelling monitor task");
                            stopThread.set(true);
                            monitorNotity();
                            task.cancel(true);
                            task = null;
                        }
                        ((EvdoCellularModem) modem).provision();
                        if (task == null) {
                            s_logger.info("trackModem() :: Restarting monitor task");
                            stopThread.set(false);
                            task = this.m_executor.submit(new Runnable() {

                                @Override
                                public void run() {
                                    while (!stopThread.get()) {
                                        Thread.currentThread().setName("ModemMonitor");
                                        try {
                                            monitor();
                                            monitorWait();
                                        } catch (InterruptedException interruptedException) {
                                            Thread.interrupted();
                                            s_logger.debug("modem monitor interrupted - {}", interruptedException);
                                        } catch (Throwable t) {
                                            s_logger.error("trackModem() :: Exception while monitoring cellular connection {}", t);
                                        }
                                    }
                                }
                            });
                        } else {
                            monitorNotity();
                        }
                    } else {
                        s_logger.info("trackModem() :: The {} is provisioned", modem.getModel());
                    }
                }
                if (modem.isGpsSupported()) {
                    if (isGpsEnabledInConfig(netConfigs) && !modem.isGpsEnabled()) {
                        modem.enableGps();
                        postModemGpsEvent(modem, true);
                    }
                }
            }
        } catch (Exception e) {
            s_logger.error("trackModem() :: {}", e);
        }
    }
}

Example 5 with SerialModemDevice

use of org.eclipse.kura.net.modem.SerialModemDevice in project kura by eclipse.

the class TelitHe910 method getTechnologyTypes.

@Override
public List<ModemTechnologyType> getTechnologyTypes() throws KuraException {
    List<ModemTechnologyType> modemTechnologyTypes = null;
    ModemDevice device = getModemDevice();
    if (device == null) {
        throw new KuraException(KuraErrorCode.INTERNAL_ERROR, "No modem device");
    }
    if (device instanceof UsbModemDevice) {
        SupportedUsbModemInfo usbModemInfo = SupportedUsbModemsInfo.getModem((UsbModemDevice) device);
        if (usbModemInfo != null) {
            modemTechnologyTypes = usbModemInfo.getTechnologyTypes();
        } else {
            throw new KuraException(KuraErrorCode.INTERNAL_ERROR, "No usbModemInfo available");
        }
    } else if (device instanceof SerialModemDevice) {
        SupportedSerialModemInfo serialModemInfo = SupportedSerialModemsInfo.getModem();
        if (serialModemInfo != null) {
            modemTechnologyTypes = serialModemInfo.getTechnologyTypes();
        } else {
            throw new KuraException(KuraErrorCode.INTERNAL_ERROR, "No serialModemInfo available");
        }
    } else {
        throw new KuraException(KuraErrorCode.INTERNAL_ERROR, "Unsupported modem device");
    }
    return modemTechnologyTypes;
}