3G Modem Installation in Linux Ubuntu

It's been 2 months I am using Sierra 3G PCMCIA modem in  Windows XP. Installation in Windows XP is quite easy, that's why for 2 months I am enjoying using it.

I dont know why this morning I had in mind how to install 3G modem in Ubuntu box. And I remember in installation CD, the seller also providing linux driver but there are no instruction how to install it :(. Yes, I think I have to install it myself.

I am using Ubuntu Gutsy and use the driver for Linux that included in installation CD.

Sierra provide driver for Linux, you can download Linux driver ini this page:

http://www.sierrawireless.com/faq/ShowFAQ.aspx?ID=1076

Installation

katz@katz:~$ cd /media/cdrom/Linux/
katz@katz:/media/cdrom/Linux$ cp sierra.v.1.0.6.tar.gz
katz@katz:/media/cdrom/Linux$ cp ppp-scripts.tar.gz

katz@katz:~$ sudo tar xvzf sierra.v.1.0.6.tar.gz

[sudo] password for katz:

katz@katz:~$ cd sierra.v.1.0.6/

katz@katz:~/sierra.v.1.0.6$ ls
Makefile        sierra.c  
Module.symvers

katz@katz:~/sierra.v.1.0.6$ sudo make

katz@katz:~/sierra.v.1.0.6$ ls
Makefile        sierra.c   sierra.mod.c  sierra.o
Module.symvers  sierra.ko  sierra.mod.o

katz@katz:~/sierra.v.1.0.6$ dmesg
[   22.272000]
/build/buildd/linux-source-2.6.22-2.6.22/drivers/usb/serial/usb-serial.c:
USB Serial support registered for Sierra USB modem (3 port)

[   22.272000] sierra 4-1:1.0: Sierra USB modem (3 port) converter detected

[   22.276000] usb 4-1: Sierra USB modem (3 port) converter now attached to ttyUSB0

[   22.276000] usb 4-1: Sierra USB modem (3 port) converter now attached to ttyUSB1

[   22.276000] usb 4-1: Sierra USB modem (3 port) converter now attached to ttyUSB2

[   22.276000] usbcore: registered new interface driver sierra

[   22.276000]
/build/buildd/linux-source-2.6.22-2.6.22/drivers/usb/serial/sierra.c:
USB Driver for Sierra Wireless USB modems: v.1.0.6

Now my ubuntu has recognized the modem

katz@katz:~/sierra.v.1.0.6$ cd..

katz@katz:~$ sudo tar xvzf ppp-scripts.tar.gz

katz@katz:~$ cd ppp/

katz@katz:~/ppp$ ls
ip-down.local  ip-up.local  peers

katz@katz:~/ppp$ cd peers/
katz@katz:~/ppp/peers$ ls
cdma  cdma_chat  gsm  gsm_chat

Explanation :

We dont need cdma n cdma_chat

katz@katz:~$ sudo cp ppp/ip-down.local /etc/ppp/

katz@katz:~$ sudo cp ppp/ip-up.local /etc/ppp/

katz@katz:~$ sudo cp ppp/peers/gsm /etc/ppp/peers/
katz@katz:~$ sudo cp ppp/peers/gsm_chat /etc/ppp/peers/

katz@katz:~$ sudo vi /etc/ppp/peers/gsm

-detach
lcp-echo-failure 0
/dev/ttyUSB0                             
460800
debug
defaultroute
usepeerdns

#ipcp-no-address
#ipcp-no-addresses
ipcp-max-failure 4
ipcp-accept-local
ipcp-accept-remote

# AUTHENTICATION
# If noauth works, use that, otherwise you have to pass
# the user name and password. This is an example of a
# standard Cingular user/pw combo

#noauth
user xxxxxxx                         
password xxxxxxx

crtscts
lock
connect '/usr/sbin/chat -v -t6 -f /etc/ppp/peers/gsm_chat'

Explanation :

User xxxxx <<< change xxxxx with our user account, for example : xlgprs

Password xxxxx <<< change xxxxx with password for our user account, for example : proxl

katz@katz:~$ sudo vi /etc/ppp/peers/gsm_chat

OK     'AT+CGDCONT=1,"IP","ISP.CINGULAR"'                    
#OK     'AT+CGDCONT=2,"IP","ISP.CINGULAR"'

#######################################
SAY '\n'
SAY     'Dialing...\n'
# Dial the ISP, this is the common Cingular dial string

OK ATD*99***1#    
CONNECT ''

Explanation :

OK     'AT+CGDCONT=1,"IP","ISP.CINGULAR"'                     <<< Change ISP.CINGULAR according to your provider, example: www.xlgprs.net

OK ATD*99***1#     <<< The dial number

katz@katz:~$ sudo pppd call gsm

Starting Sierra Wireless GSM connect script...

Setting the abort string

Initializing modem

Setting APN

Dialing...
Serial connection established.
using channel 2
Using interface ppp0

Connect: ppp0 <--> /dev/ttyUSB0

katz@katz:~$ ping google.com

PING google.com (72.14.207.99) 56(84) bytes of data.

64 bytes from eh-in-f99.google.com (72.14.207.99): icmp_seq=1 ttl=242 time=948 ms

64 bytes from eh-in-f99.google.com (72.14.207.99): icmp_seq=2 ttl=242 time=948 ms

Use Ctrl + C to end your connection