HSDPA modem recognized /dev/ttyACM0 USB
device in Linux.
Connect via ppp daemon.
Make a dialing script and connect.
Another method are run the pppd, you can connect wvdial, kppp or
gnome-ppp.
* Step 1.
1. Linux have to recognize HSDPA modem when you connect USB to Linux
system as a ¡®ttyACM0¡¯.
If your Linux system didn¡¯t recognize /dev/ttyACM0, then you have to
kernel recompile include ¡®CDC ACM¡¯ in USB device.
Also, you have to check about loaded CDC ACM module after booting.
#dmesg
usb 2-1: USB disconnect, address 2
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 4 ports detected
usb 2-2: USB disconnect, address 3
ieee1394: Initialized config rom entry `ip1394'
usb 2-1: new low speed USB device using uhci_hcd and address 4
input: USB Optical Mouse as /class/input/input2
input: USB HID v1.11 Mouse [USB Optical Mouse] on usb-0000:00:1d.1-1
usb 2-2: new full speed USB device using uhci_hcd and address 5
cdc_acm 2-2:1.0: ttyACM0: USB ACM device
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE]
parport0: irq 7 detected
ip_tables: (C) 2000-2002 Netfilter core team
Intel(R) PRO/1000 Network Driver - version 6.1.16-k2
Check the module
#lsmod
usb 2-1: USB disconnect, address 2
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 4 ports detected
usb 2-2: USB disconnect, address 3
ieee1394: Initialized config rom entry `ip1394'
usb 2-1: new low speed USB device using uhci_hcd and address 4
input: USB Optical Mouse as /class/input/input2
input: USB HID v1.11 Mouse [USB Optical Mouse] on usb-0000:00:1d.1-1
usb 2-2: new full speed USB device using uhci_hcd and address 5
cdc_acm 2-2:1.0: ttyACM0: USB ACM device
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE]
parport0: irq 7 detected
ip_tables: (C) 2000-2002 Netfilter core team
Intel(R) PRO/1000 Network Driver - version 6.1.16-k2
Copyright (c) 1999-2005 Intel Corporation.
As upper sentences CDC ACM module loaded, but you couldn¡¯t create
/dev/ttyACM0, then
You have to make ttyACM0 module as below command.
# mknod /dev/ttyACM0 c 166 0
4. Now you can connect for using ¡®pppd call hsdpa¡¯

Related Product: V-series IP/Network Cameras
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