diff --git a/usbSerialExamples/src/main/java/com/hoho/android/usbserial/examples/TerminalFragment.java b/usbSerialExamples/src/main/java/com/hoho/android/usbserial/examples/TerminalFragment.java
index 2f4cfb3..b286a94 100644
--- a/usbSerialExamples/src/main/java/com/hoho/android/usbserial/examples/TerminalFragment.java
+++ b/usbSerialExamples/src/main/java/com/hoho/android/usbserial/examples/TerminalFragment.java
@@ -227,7 +227,11 @@ public class TerminalFragment extends Fragment implements SerialInputOutputManag
 
         try {
             usbSerialPort.open(usbConnection);
-            usbSerialPort.setParameters(baudRate, 8, 1, UsbSerialPort.PARITY_NONE);
+            try{
+                usbSerialPort.setParameters(baudRate, 8, 1, UsbSerialPort.PARITY_NONE);
+            }catch (UnsupportedOperationException e){
+                status("unsupport setparameters");
+            }
             if(withIoManager) {
                 usbIoManager = new SerialInputOutputManager(usbSerialPort, this);
                 usbIoManager.start();
@@ -351,7 +355,7 @@ public class TerminalFragment extends Fragment implements SerialInputOutputManag
                 cdBtn.setChecked(controlLines.contains(UsbSerialPort.ControlLine.CD));
                 riBtn.setChecked(controlLines.contains(UsbSerialPort.ControlLine.RI));
                 mainLooper.postDelayed(runnable, refreshInterval);
-            } catch (IOException e) {
+            } catch (Exception e) {
                 status("getControlLines() failed: " + e.getMessage() + " -> stopped control line refresh");
             }
         }
@@ -368,8 +372,15 @@ public class TerminalFragment extends Fragment implements SerialInputOutputManag
                 if (!controlLines.contains(UsbSerialPort.ControlLine.CD))   cdBtn.setVisibility(View.INVISIBLE);
                 if (!controlLines.contains(UsbSerialPort.ControlLine.RI))   riBtn.setVisibility(View.INVISIBLE);
                 run();
-            } catch (IOException e) {
+            } catch (Exception e) {
                 Toast.makeText(getActivity(), "getSupportedControlLines() failed: " + e.getMessage(), Toast.LENGTH_SHORT).show();
+                rtsBtn.setVisibility(View.INVISIBLE);
+                ctsBtn.setVisibility(View.INVISIBLE);
+                dtrBtn.setVisibility(View.INVISIBLE);
+                dsrBtn.setVisibility(View.INVISIBLE);
+                cdBtn.setVisibility(View.INVISIBLE);
+                cdBtn.setVisibility(View.INVISIBLE);
+                riBtn.setVisibility(View.INVISIBLE);
             }
         }
 
diff --git a/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/GsmModemSerialDriver.java b/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/GsmModemSerialDriver.java
new file mode 100644
index 0000000..1afd678
--- /dev/null
+++ b/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/GsmModemSerialDriver.java
@@ -0,0 +1,111 @@
+package com.hoho.android.usbserial.driver;
+
+import android.hardware.usb.UsbConstants;
+import android.hardware.usb.UsbDevice;
+import android.hardware.usb.UsbEndpoint;
+import android.hardware.usb.UsbInterface;
+import android.util.Log;
+
+import java.io.IOException;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+public class GsmModemSerialDriver implements UsbSerialDriver{
+
+    private final String TAG = GsmModemSerialDriver.class.getSimpleName();
+
+    private final UsbDevice mDevice;
+    private final UsbSerialPort mPort;
+
+    @Override
+    public UsbDevice getDevice() {
+        return mDevice;
+    }
+
+    @Override
+    public List<UsbSerialPort> getPorts() {
+        return Collections.singletonList(mPort);
+    }
+
+    public GsmModemSerialDriver(UsbDevice mDevice) {
+        this.mDevice = mDevice;
+        mPort = new GsmModemSerialPort(mDevice, 0);
+    }
+
+    public class GsmModemSerialPort extends CommonUsbSerialPort {
+
+        private UsbInterface mDataInterface;
+
+        public GsmModemSerialPort(UsbDevice device, int portNumber) {
+            super(device, portNumber);
+        }
+
+        @Override
+        protected void openInt() throws IOException {
+            Log.d(TAG, "claiming interfaces, count=" + mDevice.getInterfaceCount());
+            mDataInterface = mDevice.getInterface(0);
+            if (!mConnection.claimInterface(mDataInterface, true)) {
+                throw new IOException("Could not claim shared control/data interface");
+            }
+            Log.d(TAG, "endpoint count=" + mDataInterface.getEndpointCount());
+            for (int i = 0; i < mDataInterface.getEndpointCount(); ++i) {
+                UsbEndpoint ep = mDataInterface.getEndpoint(i);
+                if ((ep.getDirection() == UsbConstants.USB_DIR_IN) && (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK)) {
+                    mReadEndpoint = ep;
+                } else if ((ep.getDirection() == UsbConstants.USB_DIR_OUT) && (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK)) {
+                    mWriteEndpoint = ep;
+                }
+            }
+            initGsmModem();
+        }
+
+        @Override
+        protected void closeInt() {
+            try {
+                mConnection.releaseInterface(mDataInterface);
+            } catch(Exception ignored) {}
+
+        }
+
+        private int initGsmModem() throws IOException {
+            int len = mConnection.controlTransfer(
+                    0x21, 0x22, 0x01, 0, null, 0, 5000);
+            if(len < 0) {
+                throw new IOException("init failed");
+            }
+            return len;
+        }
+
+        @Override
+        public UsbSerialDriver getDriver() {
+            return GsmModemSerialDriver.this;
+        }
+
+        @Override
+        public void setParameters(int baudRate, int dataBits, int stopBits, int parity) throws IOException {
+            throw new UnsupportedOperationException();
+        }
+
+        @Override
+        public EnumSet<ControlLine> getControlLines() throws IOException {
+            throw  new UnsupportedOperationException();
+        }
+
+        @Override
+        public EnumSet<ControlLine> getSupportedControlLines() throws IOException {
+            throw  new UnsupportedOperationException();
+        }
+    }
+
+    public static Map<Integer, int[]> getSupportedDevices() {
+        final Map<Integer, int[]> supportedDevices = new LinkedHashMap<>();
+        supportedDevices.put(UsbId.VENDOR_UNISOC, new int[]{
+                UsbId.FIBOCOM_L610,
+                UsbId.FIBOCOM_L612,
+        });
+        return supportedDevices;
+    }
+}
diff --git a/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbId.java b/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbId.java
index bed2ffe..b63c9ce 100644
--- a/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbId.java
+++ b/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbId.java
@@ -41,6 +41,10 @@ public final class UsbId {
     public static final int QINHENG_CH340 = 0x7523;
     public static final int QINHENG_CH341A = 0x5523;
 
+    public static final int VENDOR_UNISOC = 0x1782;
+    public static final int FIBOCOM_L610 = 0x4D10;
+    public static final int FIBOCOM_L612 = 0x4D12;
+
 
     private UsbId() {
         throw new IllegalAccessError("Non-instantiable class");
diff --git a/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbSerialProber.java b/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbSerialProber.java
index fd94a18..ce02458 100644
--- a/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbSerialProber.java
+++ b/usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbSerialProber.java
@@ -37,6 +37,7 @@ public class UsbSerialProber {
         probeTable.addDriver(FtdiSerialDriver.class);
         probeTable.addDriver(ProlificSerialDriver.class);
         probeTable.addDriver(Ch34xSerialDriver.class);
+        probeTable.addDriver(GsmModemSerialDriver.class);
         return probeTable;
     }