[nisalome]

I have a Delta CDMA Modem DCM-404, which works in Windows. I am trying to get it work in my Linux system (Kubuntu 7.10 32 bit version). The output of lsusb show the following:

nitin@nitin:~$ lsusb
Bus 005 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000
Bus 002 Device 003: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 002 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000

I would like to know if this device is supported? Do I need to upgrade my Linux distro or install additional packages? I tried installing usb*.deb packages and tried to make the device work by following examples from some blogs, but it didn't work.

Waiting for your help.

[Josh]

I don't think you need to do any switching with this device. And there is a dedicated driver for the hardware called "pl2303".

To see if your system is recognizing the modem, run the "dmesg" command immediately after plugging the device in. Post the last 30 or 40 lines here.

[nisalome]

I am pasting the last 40 lines from the output of dmesg. Please advise what am I to do next to make my cdma usb modem work in Linux.

[ 31.765658] usbcore: registered new interface driver usbserial
[ 31.765683] /build/buildd/linux-source-2.6.22-2.6.22/drivers/usb/serial/usb-s
erial.c: USB Serial support registered for generic
[ 31.765708] usbcore: registered new interface driver usbserial_generic
[ 31.765712] /build/buildd/linux-source-2.6.22-2.6.22/drivers/usb/serial/usb-s
erial.c: USB Serial Driver core
[ 31.810278] Adding 1003988k swap on /dev/sda6. Priority:-1 extents:1 across:
1003988k
[ 57.500544] EXT3 FS on sda7, internal journal
[ 58.494266] No dock devices found.
[ 58.628902] input: Power Button (FF) as /class/input/input4
[ 58.628931] ACPI: Power Button (FF) [PWRF]
[ 58.629064] input: Power Button (CM) as /class/input/input5
[ 58.629090] ACPI: Power Button (CM) [PWRB]
[ 59.639882] ppdev: user-space parallel port driver
[ 59.703116] r8169: eth0: link down
[ 59.903251] audit(1283886765.923:3): type=1503 operation="inode_permission"
requested_mask="a" denied_mask="a" name="/dev/tty" pid=4860 profile="/usr/sbin/c
upsd"
[ 60.144178] apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16ac)
[ 60.144189] apm: disabled - APM is not SMP safe.
[ 61.107942] Failure registering capabilities with primary security module.
[ 61.208486] [drm] Initialized drm 1.1.0 20060810
[ 61.211184] ACPI: PCI Interrupt 0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 16
[ 61.211688] [drm] Initialized i915 1.6.0 20060119 on minor 0
[ 61.213441] set status page addr 0x00033000
[ 61.423927] Bluetooth: Core ver 2.11
[ 61.424090] NET: Registered protocol family 31
[ 61.424094] Bluetooth: HCI device and connection manager initialized
[ 61.424099] Bluetooth: HCI socket layer initialized
[ 61.452522] Bluetooth: L2CAP ver 2.8
[ 61.452529] Bluetooth: L2CAP socket layer initialized
[ 61.523329] Bluetooth: RFCOMM socket layer initialized
[ 61.523462] Bluetooth: RFCOMM TTY layer initialized
[ 61.523467] Bluetooth: RFCOMM ver 1.8
[ 111.225678] usb 3-1: new full speed USB device using uhci_hcd and address 2
[ 111.388355] usb 3-1: configuration #1 chosen from 1 choice
[ 111.391315] usbserial_generic 3-1:1.0: generic converter detected
[ 111.391637] usb 3-1: generic converter now attached to ttyUSB0
[ 111.450950] /build/buildd/linux-source-2.6.22-2.6.22/drivers/usb/serial/usb-s erial.c: USB Serial support registered for pl2303
[ 111.451465] usbcore: registered new interface driver pl2303
[ 111.451472] /build/buildd/linux-source-2.6.22-2.6.22/drivers/usb/serial/pl230 3.c: Prolific PL2303 USB to serial adaptor driver
nitin@nitin:~$

[Josh]

Well, the driver worked obviously; now your modem is ready to use with the ttyUSB0 port.