slackware 9.0 ppp problem

Slackware 9.0 kernel verison 2.4.20 pppd version 2.4.1

/var/log/messages

May 27 01:29:41 zmaj pppd[428]: Serial connection established.
May 27 01:29:41 zmaj pppd[428]: Using interface ppp0
May 27 01:29:41 zmaj pppd[428]: Connect: ppp0 <--> /dev/modem
May 27 01:29:41 zmaj /etc/hotplug/net.agent: assuming ppp0 is already
up
May 27 01:30:14 zmaj pppd[428]: Connection terminated.
May 27 01:30:15 zmaj pppd[428]: Exit.

/var/log/syslog

May 27 01:28:26 zmaj pppd[389]: LCP: timeout sending Config-Requests
May 27 01:30:14 zmaj pppd[428]: LCP: timeout sending Config-Requests

#>lsmod
Module Size Used by Tainted: P
ppp_async 7520 0 (autoclean)
lt_serial 17748 0 (autoclean)
lt_modem 472091 0 (autoclean) [lt_serial]
ppp_generic 15452 0 [ppp_async]
slhc 5040 0 [ppp_generic]
cmpci 24976 0 (unused)
soundcore 3332 2 [cmpci]
tlan 26488 1
ide-scsi 8048 0

file chat-verat

ABORT "NO DIALTONE"
ABORT "ERROR"
ABORT "NO ANSWER"
ABORT "BUSY"
ABORT "Username/Password Incorrect"
"" "at"
OK "atx"
OK "atdt042110011"
"ogin:" "myusermane"
"word:" "mypassword"

file verat

/dev/modem
57600
crtscts
connect '/usr/sbin/chat -v -f /etc/ppp/chat-verat'
noauth

i started pppd with .... pppd call verat

as you see after one minute my connection was terminated .. anyone
have some idea
why?

also if i make ifconfig there is no ppp0 interface! not created! can
someone explaine what is the purpose of this /etc/hotplug/net.agent ?
maybe somethnig wrong whit my net configuration script (like
rc.inet1)?

ps:sorry for bad english ....