我用的是boson netsim 6.0    layer3层0 active
Router>en
Router#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#hostn R1
R1(config)#interf bri0
R1(config-if)#ip address 10.1.1.1 255.255.255.0
R1(config-if)#no shut
%LINK-3-UPDOWN: Interface Bri0, changed state to up
R1(config-if)#exit
R1(config)#isdn switch-type basic-ni
R1(config)#interf bri0
R1(config-if)#isdn spid1 32177820010100
R1(config-if)#dialer string 7782001
R1(config-if)#exit
R1(config)#dialer-list 1 protocol ip permit
R1(config)#interf bri0
R1(config-if)#dialer-group1
R1(config-if)#end
R1#show isdn status
Global ISDN Switchtype = basic-ni
ISDN BRI0 interface
        dsl 0, interface ISDN Switchtype = basic-ni
    Layer 1 Status:
        TESTING
    Layer 2 Status:
        TEI = 64, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
        TEI 64, ces = 1, state = 5(init)
            spid1 configured, no LDN, spid1 sent, spid1 valid
    Layer 3 Status:
       0 Active Layer 3 Call(s)    Active dsl 0 CCBs = 0
    The Free Channel Mask:  0x80000003
    Number of L2 Discards = 0, L2 Session ID = 100
    Total Allocated ISDN CCBs = 0

坐个小板凳等着.......................

你拨号时，应该拨对方的号码，你换一下试试！将32177820010100换成32177820020100！
R1(config)#interf bri0
R1(config-if)#isdn spid1 32177820020100
R1(config-if)#dialer string 7782001

NA现在还考ISDN吗