R7#sh run
Building configuration...

Current configuration : 1717 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R7
!
!
!
!
!
!
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
frame-relay switching
isdn switch-type basic-ni
!
!
!
!
!
interface Ethernet0
 ip address 161.8.136.7 255.255.255.128
!
interface Serial0
 description frame-relay to R6
 no ip address
 encapsulation frame-relay
 shutdown
 no fair-queue
 clockrate 250000
 frame-relay intf-type dce
 frame-relay route 162 interface Serial3 126
 frame-relay route 163 interface Serial2 136
 frame-relay route 165 interface Serial1 156
!
interface Serial1
 description frame-relay to R5
 no ip address
 encapsulation frame-relay
 clockrate 250000
 frame-relay intf-type dce
 frame-relay route 152 interface Serial3 125
 frame-relay route 153 interface Serial2 135
 frame-relay route 156 interface Serial0 165
!
interface Serial2
 description frame-relay to R3
 no ip address
 encapsulation frame-relay
 clockrate 115200
 frame-relay intf-type dce
 frame-relay route 132 interface Serial3 123
 frame-relay route 135 interface Serial1 153
 frame-relay route 136 interface Serial0 163
!
interface Serial3
 description frame-relay to R2
 no ip address
 encapsulation frame-relay
 clockrate 115200
 frame-relay intf-type dce
 frame-relay route 123 interface Serial2 132
 frame-relay route 125 interface Serial1 152
 frame-relay route 126 interface Serial0 162
!
interface BRI0
 ip unnumbered Ethernet0
 encapsulation ppp
 dialer string 2023
 dialer-group 1
 isdn switch-type basic-ni
 isdn spid1 2024
!
ip classless
ip http server
!
dialer-list 1 protocol ip permit
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line aux 0
line vty 0 4
!
end

R7#