/dev/ttyS3
115200

debug
# nodetach
dump
lock

defaultroute
replacedefaultroute
defaultroute-metric 200

nocrtscts
ipcp-accept-local
ipcp-accept-remote
noipdefault
usepeerdns
persist
noauth

connect '/usr/sbin/chat -v -f /etc/ppp/chatscripts/sim800'