USB communications device class (or USB CDC class) is a composite Universal Serial Busdevice class.
Below you will find the driver for the SAMSUNG Mobile USB CDC Composite Device. The driver comes in the form of a.CAB file and we will show you how to install the driver from the Microsoft CAB files. The MT9234ZBA-USB-CDC-XR is the V.92 Data/Fax World Modem member of the MultiModem® ZBA family. USB Modem with CDC/ACM Driver. Includes modem, USB cable and RJ. USB communications device class (or USB CDC class) is a composite Universal Serial Bus device class. The communications device class is used for computer networking devices akin to a network card, providing an interface for transmitting Ethernet or ATM frames onto some physical media. It is also used for modems, ISDN, fax machines, and telephony applications for performing regular voice calls.
The communications device class is used for computer networking devices akin to a network card, providing an interface for transmitting Ethernet or ATM frames onto some physical media. It is also used for modems, ISDN, fax machines, and telephony applications for performing regular voice calls.
Microsoft Windows versions prior to Windows Vista do not work with the networking parts of the USB CDC, instead using Microsoft's own derivative named Microsoft RNDIS, a serialized version of the Microsoft NDIS (Network Driver Interface Specification). With a vendor-supplied INF file, Windows Vista works with USB CDC and USB WMCDC devices.[1]
This class can be used for industrial equipment such as CNC machinery to allow upgrading from older RS-232 serial controllers and robotics, since they can keep software compatibility. The device attaches to an RS-232 communications line and the operating system on the USB side makes the USB device appear as a traditional RS-232 port. Chip manufacturers such as Prolific Technology, FTDI, Microchip, and Atmel provide facilities for developing USB RS-232 devices.
Devices of this class are also implemented in embedded systems such as mobile phones so that a phone may be used as a modem, fax or network port. The data interfaces are generally used to perform bulk data transfer.
References[edit]
- ^Support for the Wireless Mobile Communication Device Class
External links[edit]
- USB-IF's Approved Class Specification Documents
- Class definitions for Communication Devices 1.2 (.zip file format, size 3.43 MB)
- App Note, Migrating from RS-232 to USB Bridge Specification. Explains the use of USB CDC (Communications Device Class) ACM (Abstract Control Model) to emulate serial ports over USB.
Retrieved from 'https://en.wikipedia.org/w/index.php?title=USB_communications_device_class&oldid=903916486'
This is a common problem with many mobile phones being the loss of the CDC Serial driver. Many Samsung users experience this and there is a solution for this as has been highlighted below. Note the driver below which you will need to install. There is a method of doing this so look at the screenshots listed below.
How to Samsung Android CDC Serial Driver
If you have a Windows XP machine then you need to ensure that you have updated your system with the latest hotfixes. This would include the Microsoft Hotfix KB943198 for Windows XP update. It is even better to update Windows XP to SP3.
Open the Device Manger first
This opens the Device Manager
Click on Action – Then click on “Add legacy hardware”
The next menu comes up and click on next
Click on ‘Install the hardware that I manually select from a list’
A new menu open. Click on next at the bottom.
Now click on have disk
Click on Browse at the bottom. Find the location where you extracted the file to.
Click on the file that was in the Zip file then click open.
Samsung Cdc Acm Usb Driver
Click on Android Gadget and then click next.
It will now start the install.
It will stop and say the the driver is not signed. Click install anyway.
The driver will complete the install.
The driver has now been installed.
Note that this is an .inf file and you must extract the zip file and remember where you extracted it to. Once you know where it is located on your computer, then start the process above. It is very simple to do by looking at the pictures above. The CDC Serial driver was for phone who had hardware made by a company called MediaTek. The driver goes under a number of names such as USB RS-232 Emulation Driver as well as MediaTek PreLoader USB VCOM and ACM driver for Android Gadget. The file below can also be used with Lenovo hardware.
Samsung Android CDC Serial Driver
VN:F [1.9.22_1171]
VN:F [1.9.22_1171]
Samsung Android CDC Serial Driver, 7.6 out of 10 based on 48 ratings Incoming Search Terms:
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