11.运行wvdial，可以看到结果如下：
[root@test ppp]# wvdial
--> WvDial: Internet dialer version 1.53
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT*99***1#
--> Waiting for carrier.
ATDT*99***1#
CONNECT
--> Carrier detected. Waiting for prompt.
~[7f]}#@!}!}!} }7}"}&} } } } }#}%B#}%}%}&I=}3[18]}(}"}^}#~
--> PPP negotiation detected.
--> Starting pppd at Thu May 13 17:47:11 2004
--> pid of pppd: 19535
12.另开一个Terminal，运行ifconfig可以看到接口中已经出现了ppp0设备，如下图所示：
ppp0 Link encap:Point-to-Point Protocol
inet addr:220.192.68.149 P-t-P:220.192.64.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:3 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:66 (66.0 b) TX bytes:84 (84.0 b)
可以看到已经获得了动态地址220.192.68.149
13.这时候需要手工添加一条默认路由：route add default ppp0 ，添加完成后可以ping远端的一个地址试试是否真的上网了，例如说在公网上可以ping 166.111.8.238，应该会通；
14.如果要挂断ppp联接，很简单，只要切换到wvdial所在的Terminal，然后按Ctrl + C即可，也可以给kill掉wvdial 进程，结果如下:
Caught signal #2! Attempting to exit gracefully...
--> Disconnecting at Thu JULY 13 17:58:26 2004
[root@test ppp]# ppp0 Link encap:Point-to-Point Protocol
