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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