ROUTER#sh isdn stat
Global ISDN Switchtype = basic-net3
....
ISDN BRI0/0/1 interface
        ******* Network side configuration *******
        dsl 1, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        ACTIVE
    Layer 2 Status:
        Layer 2 NOT Activated
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 1 CCBs = 0
    The Free Channel Mask:  0x80000003
    Total Allocated ISDN CCBs = 0
ROUTER#
*Dec 12 17:09:17.439: ISDN BR0/0/1 Q931: Applying typeplan for sw-type 0x1 is 0x0 0x0, Calling num 121
*Dec 12 17:09:17.443: ISDN BR0/0/1 Q931: Applying typeplan for sw-type 0x1 is 0x0 0x0, Called num 0744767489
*Dec 12 17:09:17.443: ISDN BR0/0/1 Q921: Net TX -> UI sapi=0 tei=127
*Dec 12 17:09:17.443: ISDN BR0/0/1 Q931: SETUP pd = 8  callref = 0x01
        Bearer Capability i = 0x8090A3
                Standard = CCITT
                Transer Capability = Speech
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0x89
        Calling Party Number i = 0x0081, '121'
                Plan:Unknown, Type:Unknown
        Called Party Number i = 0x80, '0744767489'
                Plan:Unknown, Type:Unknown
        Sending Complete
*Dec 12 17:09:17.475: ISDN BR0/0/1 Q921: Net RX <- BAD FRAME(0x02017F)
*Dec 12 17:09:18.459: ISDN BR0/0/1 Q921: Net RX <- BAD FRAME(0x02017F)
*Dec 12 17:09:19.463: ISDN BR0/0/1 Q921: Net RX <- BAD FRAME(0x02017F)
*Dec 12 17:09:20.463: ISDN BR0/0/1 Q921: Net RX <- BAD FRAME(0x02017F)
*Dec 12 17:09:21.443: ISDN BR0/0/1 Q921: Net TX -> UI sapi=0 tei=127
*Dec 12 17:09:21.443: ISDN BR0/0/1 Q931: SETUP pd = 8  callref = 0x01
        Bearer Capability i = 0x8090A3
                Standard = CCITT
                Transer Capability = Speech
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0x89
        Calling Party Number i = 0x0081, '121'
                Plan:Unknown, Type:Unknown
        Called Party Number i = 0x80, '0744767489'
                Plan:Unknown, Type:Unknown
        Sending Complete
*Dec 12 17:09:21.475: ISDN BR0/0/1 Q921: Net RX <- BAD FRAME(0x02017F)
*Dec 12 17:09:22.459: ISDN BR0/0/1 Q921: Net RX <- BAD FRAME(0x02017F)
*Dec 12 17:09:23.459: ISDN BR0/0/1 Q921: Net RX <- BAD FRAME(0x02017F)
*Dec 12 17:09:24.459: ISDN BR0/0/1 Q921: Net RX <- BAD FRAME(0x02017F)

************** de aici, redundanta preia si porneste interfata BRI 0/0/0, spre Romtelecom