User guide

INSTALLING DEVICE DRIVERS

Installing Device Drivers

Installing on Linux

The Linux OS includes a generic USB driver for modems supporting CDC/ACM.

Multi-Tech tested the following Linux operating systems and all used port . If your system has another device using

this port, your port numbers may be different.

■ Ubuntu

■ Debian

■ Centos

To install the device on any Linux Kernel with CDC/ACM support, connect USB cable from the device to a USB port

on your computer. For most recent Linux distributions, there are no drivers to install.

Troubleshooting Linux

If Linux does not create devices, check for the kernel module:

# lsmod | grep option

If entries aren't found, load the kernel module with root privileges:

# modprobe option

If this returns an error response, such as # FATAL: Module option not found, the kernel module is not on your

system. You will need to build the driver.

Building a Linux Driver

If the Linux driver is not recognized by your system, the driver may need to be customized for your device.

Note: To avoid runtime loading, build the driver as part of the kernel instead of as a module.

1. Retrieve the appropriate kernel source code version for your system. This should be in your OS

distribution package. Unpack/install it.

2. In the root directory open the file: /drivers/usb/serial/option.c

3. Check for the existence of the proper #define statement.

#define TELIT_PRODUCT_CE910_DUAL 0x1010

4. If the define statement is missing, add it and then add the following in the usb_device_id option_ids[]:

{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_CE910_DUAL) }

5. Save changes and close the file.

6. From the unpacking root directory, type # make menuconfig

7. Configure the kernel according to the considered system configuration.

8. Browse to menu Device Driver > USB Support > USB Serial Converter support and select USB driver for

GSM and CDMA modems.

9. To start the build once configured, type # make

The kernel module option.ko is in the directory drivers/usb/serial. If the kernel was built previously, compile the

module by typing: # make M=drivers/usb/serial

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Cell User Guide 15