我在使用 PPPD 拨号调制解调器时遇到问题。
这是我使用的文件 pppd_script。
# Debug info from pppd
debug
#kdebug 4
# Most phones don't reply to LCP echos
lcp-echo-failure 3
lcp-echo-interval 3
# Keep pppd attached to the terminal
# Comment this to get daemon mode pppd
nodetach
# The chat script (be sure to edit that file, too!)
connect "/usr/bin/chat -V -s -f /etc/ppp/chat_script"
# Serial Device to which the HSDPA phone is connected
/dev/ttyO0
# Serial port line speed
115200
dump
# The phone is not required to authenticate
#noauth
# If you want to use the HSDPA link as your gateway
defaultroute
# pppd must not propose any IP address to the peer
#noipdefault
ipcp-accept-local
ipcp-accept-remote
# Keep modem up even if connection fails
#persist
# Hardware flow control
crtscts
# Ask the peer for up to 2 DNS server addresses
usepeerdns
# No ppp compression
novj
nobsdcomp
novjccomp
nopcomp
noaccomp
# For sanity, keep a lock on the serial line
lock
# Show password in debug messages
show-password
下面是chat_script
#!/system/bin/sh
# Connection to the network
'' AT+CGDCONT=1,"IP","telstra.internet"
# Dial the number.
OK ATD*99***1#
# The modem is waiting for the following answer
当我运行命令 pppd 文件 pppd_script 时，pppd 命令停留在
send( AT+CGDCONT=1,"IP","telstra.internet" )
expect(OK)
但是，当我使用下面的命令时，我可以得到 OK。
echo "AT+CGDCONT=1,"IP","telstra.internet"" >/dev/ttyO0
我重新编译了 pppd 和聊天脚本，但还是一样。
卡住的原因可能是什么？