首先，要有一台具備GPRS且帶有modem功能的手機，以下以palm treo 650為例。
650是不帶modem功能，要通過軟件實現，下載 USB modem軟件並安裝在650上。該軟件支持藍牙和usb數據線兩種模式！
下面首先看系統是否能檢測到modem
sudo wvdialconf
Editing `/etc/wvdial.conf'.
Scanning your serial ports for a modem.
Modem Port Scan<*1>: S0 S1 S2 S3
WvModem<*1>: Cannot get information for serial port.
ttyACM0<*1>: ATQ0 V1 E1 -- OK
ttyACM0<*1>: ATQ0 V1 E1 Z -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyACM0<*1>: Modem Identifier: ATI -- ENZO
ttyACM0<*1>: Speed 4800: AT -- OK
ttyACM0<*1>: Speed 9600: AT -- OK
ttyACM0<*1>: Speed 19200: AT -- OK
ttyACM0<*1>: Speed 38400: AT -- OK
ttyACM0<*1>: Speed 57600: AT -- OK
ttyACM0<*1>: Speed 115200: AT -- OK
ttyACM0<*1>: Speed 230400: AT -- OK
ttyACM0<*1>: Speed 460800: AT -- OK
ttyACM0<*1>: Max speed is 460800; that should be safe.
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
Found an USB modem on /dev/ttyACM0.
Modem configuration written to /etc/wvdial.conf.
ttyACM0: Speed 460800; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
如果出現以下信息則能檢測modem且將配置自動寫入 /etc/wvdial.conf文件。你modem的設備文件為/dev/ttyACM0
由於配置文件為普通撥號而建立，所以不適合grps撥號，要作以下修改
[Dialer defaults]
Init1 = at+cgdcont=1,"ip","cmwap"
Modem Type = USB Modem
ISDN = 0
Phone = *99***1#
Modem = /dev/ttyACM0
Username = any
Carrier Check = no
Password = any
Baud = 460800
保存後，使用wvdial撥號
sudo wvdial
使用超級用戶操作，不然無法會提示設備忙，或更改用戶權限。
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: at+cgdcont=1,"ip","cmwap"
at+cgdcont=1,"ip","cmwap"
OK
--> Modem initialized.
--> Sending: ATDT*99***1#
--> Waiting for carrier.
ATDT*99***1#
CONNECT
~[7f]}#@!}![06]} }<}!}$}%\}"}&} } } } }#}$@#}%}&}$^[7f]o}'}"}(}"Q}+~
--> Carrier detected. Waiting for prompt.
~[7f]}#@!}![06]} }<}!}$}%\}"}&} } } } }#}$@#}%}&}$^[7f]o}'}"}(}"Q}+~
--> PPP negotiation detected.
--> Starting pppd at Sat Jan 19 10:56:20 2008
--> Pid of pppd: 6967
--> Using interface ppp0
--> pppd: (m[07][08]hr[07][08]
--> pppd: (m[07][08]hr[07][08]
--> pppd: (m[07][08]hr[07][08]
--> pppd: (m[07][08]hr[07][08]
--> pppd: (m[07][08]hr[07][08]
--> local IP address 10.216.91.90
--> pppd: (m[07][08]hr[07][08]
--> remote IP address 10.216.91.0
--> pppd: (m[07][08]hr[07][08]
到如已經成功啦！我們再來看看路由表
$ route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.216.91.0 * 255.255.255.255 UH 0 0 0 ppp0
192.168.0.0 * 255.255.255.0 U 0 0 0 wlan0
default 192.168.0.1 0.0.0.0 UG 0 0 0 wlan0
因為我這裡還連接到無線網絡，所以默認網關是 192.168.0.1，如果只有GPRS撥號連接，則信息會是：
$ route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.216.91.0 * 255.255.255.255 UH 0 0 0 ppp0
default 10.216.91.90 0.0.0.0 UG 0 0 0 ppp0
此時，只需設置代理即可以上網了 代理為 10.0.0.172：80
由於移動限制了浏覽器，必須要將浏覽器頭信息更改才能正常上網。不過已經可以上Q.MSN等聊天工具啦！！
