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
　　现在问题是模拟电话能够正常拨入，可是ISDN却不能拨入!邪门了！我debug isdn q931
　　debug ppp neg
　　debug ppp authen
　　以后得到如下提示：
　　ISDN BR3/0: RX <- SETUP pd = 8 callref = 0x6D
　　2d01h: Bearer Capability i = 0x8890
　　2d01h: Channel ID i = 0x89
　　2d01h: Called Party Number i = 0xA1, ''2150663325'', Plan:ISDN, Type:Natio
　　nal
　　2d01h: Sending Complete
　　2d01h: ISDN BR3/0: Event: Received a DATA call from on B1 at 64 Kb/s
　　2d01h: ISDN BR3/0: Event: Accepting the call id 0x51
　　2d01h: %LINK-3-UPDOWN: Interface BRI3/0:1, changed state to up
　　2d01h: BR3/0:1 PPP: Treating connection as a callin
　　2d01h: BR3/0:1 PPP: Phase is ESTABLISHING, Passive Open [0 sess, 1 load]
　　2d01h: BR3/0:1 LCP: State is Listen
　　2d01h: ISDN BR3/0: TX -> CALL_PROC pd = 8 callref = 0xED
　　2d01h: Channel ID i = 0x89
　　2d01h: ISDN BR3/0: TX -> CONNECT pd = 8 callref = 0xED
　　2d01h: ISDN BR3/0: RX <- CONNECT_ACK pd = 8 callref = 0x6D
　　2d01h: BR3/0:1 LCP: I CONFREQ [Listen] id 1 len 17
　　2d01h: BR3/0:1 LCP: MagicNumber 0x00432275 (0x050600432275)
　　2d01h: BR3/0:1 LCP: PFC (0x0702)
　　2d01h: BR3/0:1 LCP: ACFC (0x0802)
　　2d01h: BR3/0:1 LCP: Callback 6 (0x0D0306)
　　2d01h: BR3/0:1 LCP: O CONFREQ [Listen] id 38 len 14
　　2d01h: BR3/0:1 LCP: AuthProto PAP (0x0304C023)
　　2d01h: BR3/0:1 LCP: MagicNumber 0x1184EDF8 (0x05061184EDF8)
　　2d01h: BR3/0:1 LCP: O CONFREJ [Listen] id 1 len 7
　　2d01h: BR3/0:1 LCP: Callback 6 (0x0D0306)
　　2d01h: BR3/0:1 LCP: I CONFACK [REQsent] id 38 len 14
　　2d01h: BR3/0:1 LCP: AuthProto PAP (0x0304C023)
　　2d01h: BR3/0:1 LCP: MagicNumber 0x1184EDF8 (0x05061184EDF8)
　　2d01h: BR3/0:1 LCP: I CONFREQ [ACKrcvd] id 2 len 14
　　2d01h: BR3/0:1 LCP: MagicNumber 0x00432275 (0x050600432275)
　　2d01h: BR3/0:1 LCP: PFC (0x0702)
　　2d01h: BR3/0:1 LCP: ACFC (0x0802)
　　2d01h: BR3/0:1 LCP: O CONFACK [ACKrcvd] id 2 len 14
　　2d01h: BR3/0:1 LCP: MagicNumber 0x00432275 (0x050600432275)
　　2d01h: BR3/0:1 LCP: PFC (0x0702)
　　2d01h: BR3/0:1 LCP: ACFC (0x0802)
　　2d01h: BR3/0:1 LCP: State is Open
　　2d01h: BR3/0:1 PPP: Phase is AUTHENTICATING, by this end [0 sess, 1 load]
　　2d01h: BR3/0:1 PAP: I AUTH-REQ id 1 len 12 from "leo"
　　2d01h: BR3/0:1 PAP: Authenticating peer leo
　　2d01h: BR3/0:1 PAP: O AUTH-ACK id 1 len 5
　　2d01h: BR3/0:1 PPP: Phase is UP [0 sess, 1 load]
　　2d01h: BR3/0:1 CDPCP: O CONFREQ [Closed] id 17 len 4
　　2d01h: %ISDN-6-CONNECT: Interface BRI3/0:1 is now connected to leo
　　2d01h: %ISDN-6-DISCONNECT: Interface BRI3/0:1 disconnected from leo, call last
　　ed 1 seconds
　　2d01h: ISDN BR3/0: TX -> DISCONNECT pd = 8 callref = 0xED
　　2d01h: Cause i = 0x8090 - Normal call clearing
　　2d01h: ISDN BR3/0: RX <- RELEASE pd = 8 callref = 0x6D
　　2d01h: %LINK-3-UPDOWN: Interface BRI3/0:1, changed state to down
　　2d01h: BR3/0:1 CDPCP: State is Closed
　　2d01h: BR3/0:1 PPP: Phase is TERMINATING [0 sess, 1 load]
　　2d01h: BR3/0:1 LCP: State is Closed
　　2d01h: BR3/0:1 PPP: Phase is DOWN [0 sess, 1 load]
　　2d01h: ISDN BR3/0: TX -> RELEASE_COMP pd = 8 callref = 0xED
　　我受不了了，因为密码验证已经通过了（如果我在客户端密码乱写，比如1234，那么路由器和客户端都会提示密码错误），可是就是不行，救命啊!
　　我前两天也遇到很类似的东西，现在还没有解决，在cisco.com上查到如下的话：
　　problem:The remote device does not authenticate itself. This can be seen usually with non-Cisco devices, e.g. Ascend, Livingston.
　　suggest:Use IOS 10.3(9), 11.0(5) or 11.(1) or higher, which have the option for:
　　ppp authentication chap callin, or ppp authentication pap callin
　　但是场景是两个isdn对拨的，问题是说这分明就是cisco的产品啊，难道nt1这些也必须用cisco的？配置也有ppp authen pap chap callin这些话呀。就是不知道doesnot authen itself是什么意思　　
　　FW:这个和ISDN 的网络相关，因为ISDN网有一部分是走的PSTN
　　

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