1.查看模块id
#lsusb
Bus 003 Device 007: ID 05c6:9025 Qualcomm, Inc. Qualcomm HSUSB Device
2.内核配置
#make ARCH=arm menuconfig
Device Drivers -->
network device support-->
ppp support
ppp multilink support
ppp support for async serial ports
ppp support for sync tty ports
ppp deflate compression
PPP filtering
ppp BSD_compress compression
ppp over Ethernet
SLIP(serial line )support
CSLIP compressed headers
3.在驱动中增加模块支持
#vim kernel/drivers/usb/serial/option.c
在option_ids[]数组中添加L506的id
{ USB_DEVICE(0x05c6,0x9025)},
重新编译内核并烧写
#ls /dev/ttyUSB*
/dev/ttyUSB0 /dev/ttyUSB2 /dev/ttyUSB3 /dev/ttyUSB4
4.准备拨号脚本
#cd /etc/ppp/peers
#vim wcdma
脚本内容：
debug
nodetach
lock
/dev/ttyUSB3
115200
crtscts
show-password
usepeerdns
noauth
noipdefault
novj
novjccomp
noccp
ipcp-accept-local
ipcp-accept-remote
connect '/usr/sbin/chat -s -v -f /etc/ppp/peers/wcdma-chat-connect'
disconnect '/usr/sbin/chat -s -v -f /etc/ppp/peers/wcdma-chat-disconnect'
#vim wcdma-chat-connect
脚本内容：
ABORT 'NO CARRIER' #判断AT返回值参见错误
ABORT 'ERROR'
ABORT 'NO DIALTONE'
ABORT 'BUSY'
ABORT 'BO ANSWER'
'' \rAT
OK \rATZ
OK \rAT+CGDCONT=1,"IP","cmnet"
OK-AT-OK ATDT*99***1#
CONNECT \d\c
#vim wcdma-chat-disconnect
脚本内容：
ABORT "ERROR"
ABORT "NO DIALTONE"
SAY "\n Sending break to the modem\n"
'' "\K"
'' "+++ATH"
SAY "\nGoodbay\n"
5.拨号
#pppd call wcdma &
会有一堆请求连接的信息打印出来。连接成功后会分配ip地址，并且有ifconfig -a 命令会多出一个ppp0节点。
重新设置默认网卡
# route add default dev ppp0
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