modem config

[ltodd2]

Morning
I am trying to get the modem working in the dell 5520 laptop I have but cant find out what device it is. I dont have /dev/modem but do have ttyS0, S1, S2 and S3 but have no idea how to test if one is the modem or not.
I've also got this usb dongle thing that came with some other laptops and that is detected as:

Sep 27 10:28:37 zeus kernel: [16233.289446] usb 2-1.3: new full speed USB device number 7 using ehci_hcd
Sep 27 10:28:40 zeus kernel: [16235.819219] usb 2-1.3: New USB device found, idVendor=0572, idProduct=1324
Sep 27 10:28:40 zeus kernel: [16235.819229] usb 2-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Sep 27 10:28:40 zeus kernel: [16235.819235] usb 2-1.3: Product: USB Modem
Sep 27 10:28:40 zeus kernel: [16235.819240] usb 2-1.3: Manufacturer: Conexant
Sep 27 10:28:40 zeus kernel: [16235.819245] usb 2-1.3: SerialNumber: 24680246
Sep 27 10:28:40 zeus kernel: [16235.819790] cdc_acm 2-1.3:1.0: ttyACM0: USB ACM device
Sep 27 10:28:40 zeus mtp-probe: checking bus 2, device 7: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3"
Sep 27 10:28:40 zeus mtp-probe: bus: 2, device: 7 was not an MTP device

It shows as dev/ttyACM0 but I dont know how to talk to it. Tried kppp and when querying the modem I get this in the console:
error opening modem device !

Can anyone help

[assen]

Hi,

If it is an AT-compliant modem, then launch minicom, set the port to /dev/ttyS0 and speed to 9600, port settings to 8N1, then type "atz" (software reset of the modem). If you get "OK", you have the correct port; if not, try next one.

WWell,

[DBelton]

the device is /dev/ttyACM0

/dev/ttyS0 will not point you to the correct device.

you send the commands to /dev/ttyACM0 just the same as you would any other device.

in kppp where it asks you what device, you point it to /dev/ttyACM0

(you set this in the kppp global settings on the device tab.)

if it's set up to use /dev/modem, and you can't change it to /dev/ttyACM0, you could also create a symlink to direct /dev/modem to /dev/ttyACM0, but this really isn't the preferred way to do it.

[ltodd2]

DBelton

Thanks for that will give it ago and let you know.