Router#show run
Building configuration...

Current configuration : 1135 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
memory-size iomem 10
no network-clock-participate slot 1 
no network-clock-participate wic 0 
voice-card 1
!
no aaa new-model
ip subnet-zero
ip cef
!
!         
!
isdn switch-type primary-qsig
!
!
!
!
!
!
!
!
!
!
!
!
!
controller E1 1/0
 framing NO-CRC4 
 clock source internal
 pri-group timeslots 1-31
!
controller E1 1/1
 framing NO-CRC4 
 pri-group timeslots 1-31
!
!
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial1/0:15
 no ip address
 encapsulation hdlc
 isdn switch-type primary-qsig
 isdn protocol-emulate network
 isdn incoming-voice voice
 no cdp enable
!         
interface Serial1/1:15
 no ip address
 encapsulation hdlc
 isdn switch-type primary-qsig
 isdn incoming-voice voice
 no cdp enable
!
ip http server
ip classless
!
!
!
!
voice-port 1/0:15
!
voice-port 1/1:15
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
 login
!
!
end

Router#