router a-------------PSTN--------16900(ISP)(INTERNET)
//router a
modemcap entry default:FD=&F:AA=S0=1:CD=7C1:DTR=&D3;NEC=E0:NRS=Q1
int dialer 1
description connected to internet
ip address negotiated
ip nat outside
encap ppp
dialer in-band //?
dialer idle-timeout 120
dialer string 16900
dialer hold-queue 10 //?
dialer-group 1
pulse-time 3 //?
ppp authe chap pap callin
ppp chap hostname 169
ppp chap pasword 169
ppp pap sent-username 169 password 169
no cdp enable
int fa0/0
description connected to lan a
ip addr 192.168.10.254 255.255.255.0
ip nat inside
keepalive 10
int serial 0/0
physical-layer async
description connected to internet
async mode dedicated
dialer rotary-group 1
dialer-list 1 protocol ip permit
ip nat translation timeout 86400
ip nat translation tcp-timeout 86400
ip nat translation udp-timeout 300
ip nat translation dns-timeout 60
ip nat translation finrst-timeout 60
ip nat inside source list 1 interface dialer 1 overload
router rip
ver 2
netw 192.168.10.0
passive-interface dialer 1
no auto-summary
ip route 0.0.0.0 0.0.0.0 dialer 1
line 1
modem inout
modem autoconfigure type default
transport input all
stopbits 1
speed 38400
flowcontrol hardware
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