请教在linux下用pppd , CDMA拨号的问题

weryli

小弟我最近在red hat 9.0下使用CDMA拨号,能够顺利拨上去,DNS也设置好了,也可以ping通CDMA内部IP,但是用浏览器一打开网页,pppd就自动退出了,并且显示:
Modem hangup
Script /etc/ppp/ip-down started (pid 3889)
Connection terminated.
Connect time 0.5 minutes.
Sent 700 bytes, received 1846 bytes.
Waiting for 1 child processes...
  script /etc/ppp/ip-down, pid 3889
Script /etc/ppp/ip-down finished (pid 3889), status = 0x0

我用两个连接脚本文件,分别是:
# file /tmp/run
debug
115200
nocrtscts
novj
nodetach
defaultroute
connect 'chat -e -f /tmp/chat -v'
/dev/ttyS0
user CARD
password CARD

和
# file /tmp/chat
'' AT
OK ATDT#777
CONNECT ~~

使用命令  pppd file /tmp/run 进行拨号的, 还请大狭多多指教啊...