3661在ISDN中出现问题

3661 have a nm-4b-s/t module,act as an access server,and a e1&18dm
module(but not be used now),the following is the config
Building configuration...
Current configuration : 9936 bytes
!
version 12.2
no parser cache
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 3661
!
logging rate-limit console 10 except errors
username 8888 password 0 8888
username leo password leo
memory-size iomem 15
modem country mica china
ip subnet-zero
!
!
!
no ip dhcp-client network-discovery
isdn switch-type primary-net5
!
!
controller E1 1/0
framing NO-CRC4
pri-group timeslots 1-31
!
!
interface FastEthernet0/0
ip address 168.168.44.150 255.255.255.0
duplex auto
speed auto
!
interface Serial1/0:15
no ip address
encapsulation ppp
dialer rotary-group 1
dialer-group 1
isdn switch-type primary-net5
isdn incoming-voice modem
no cdp enable
!
interface BRI3/0
no ip address
encapsulation ppp
dialer pool-member 2
isdn switch-type basic-net3
isdn incoming-voice modem
ppp authentication pap chap callin
!
interface BRI3/1
no ip address
encapsulation ppp
dialer pool-member 2
isdn switch-type basic-net3
isdn incoming-voice modem
ppp authentication pap chap callin
interface BRI3/2
no ip address
encapsulation ppp
dialer pool-member 2
isdn switch-type basic-net3
isdn incoming-voice modem
ppp authentication pap chap callin
!
interface BRI3/3
no ip address
encapsulation ppp
dialer pool-member 2
isdn switch-type basic-net3
isdn incoming-voice modem
ppp authentication pap chap callin
!
interface Group-Async1
ip unnumbered FastEthernet0/0
encapsulation ppp
load-interval 30
dialer in-band
dialer idle-timeout 3600
async mode interactive
peer default ip address pool cisco3661-group-1
ppp authentication chap callin
group-range 65 94
hold-queue 10 in
!
interface Dialer1
ip unnumbered FastEthernet0/0
encapsulation ppp
dialer in-band
dialer idle-timeout 3600
dialer-group 1
peer default ip address pool cisco3661-group-1
no cdp enable
ppp authentication pap chap
!
interface Dialer2
ip unnumbered FastEthernet0/0
encapsulation ppp
dialer pool 1
dialer-group 1
peer default ip address pool cisco3661-group-1
pulse-time 0
ppp authentication pap chap callin
!
ip local pool cisco3661-group-1 168.168.44.110 168.168.44.140
ip classless
ip http server
!
access-list 1 permit any
dialer-list 1 protocol ip list 1
!
line con 0
line 65 94
exec-timeout 0 0
modem answer-timeout 120
modem Dialin
modem autoconfigure discovery
transport input all
autoselect ppp
flowcontrol hardware
line aux 0
line vty 0 4
password ciscos
login
!
!
end