ISDN
BRI - 128kbps
Pri - T1 line 1.544Mbps
B-Channel - 64k support HDLC , PPP
D-Channel - 16K bri / 64K pri support Q921(L2 connection )/Q931(L3 connection)
D channel always up
Basic ISDN included ISDN switch +Service profile ID
Int bri 0
ip address 172.20.1.2 255.255.255.252
isdn switch-type basic-5ess
isdn spid1 1111
exit
dialer-list 1 protocol ip permit (permit thing as long is tcp protocol)
int bri 0
dialer-group 1
encapsultion ppp
ppp multilink
dialer load-threshold 1 eithers
dialer map ip 172.20.1.1 broadcast 48022222222
dialer idle-timeout 30 = will disconnect when 30 seconds idle time
sh int bri 0
sh isdn status
sh dialer
isdn stat
deubg dialer
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ip route 1792.168.2.0 255.255.255.0 172.20.1.2 250->metric
int s0
backup int bri 0
backup delay 3 15
ip ospf demand-circuit (depress router to send hello message)
dialer watch-list 10 ip 172.16.4.0 255.255.255.0
int bri o
dialer watch-group 10
dialer map 10 172.16.4.0 480111111
