ISdn Issue

[tkavithas87]

Following is the status of isdn interface.

Inhwa-HQ-UC560#show interfaces serial 0/3/0:15

Serial0/3/0:15 is down, line protocol is down

  Hardware is DSX1

  MTU 1500 bytes, BW 64 Kbit/sec, DLY 20000 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation HDLC, loopback not set

  Keepalive set (10 sec)

  Last input 02:52:07, output never, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: weighted fair

  Output queue: 0/1000/64/0 (size/max total/threshold/drops)

     Conversations  0/1/256 (active/max active/max total)

     Reserved Conversations 0/0 (allocated/max allocated)

     Available Bandwidth 48 kilobits/sec

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     498425 packets input, 2249088 bytes, 0 no buffer

     Received 0 broadcasts (0 IP multicasts)

     25 runts, 0 giants, 0 throttles

     78 input errors, 78 CRC, 0 frame, 0 overrun, 0 ignored, 4 abort

     498551 packets output, 2233882 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 unknown protocol drops

     0 output buffer failures, 0 output buffers swapped out

     4 carrier transitions

  Timeslot(s) Used:16, SCC: 0, Transmitter delay is 0 flags

This is down.what could be the cause?

thanks

kavi

[Daniele Giordano]

Is it an ISDN PRI?

Try this useful docwiki:

http://docwiki.cisco.com/wiki/Cisco_IOS_Voice_Troubleshooting_and_Monitoring_--_T1_or_E1_Interface_Troubleshooting

Regards.

[Leo Salcie Tejeda · Accepted solution]

Hi,

It look like a physical problem...maybe the cable is damaged or at the other side the T1 is down.

Regards

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[tkavithas87]

The problem was the isdn cable was disconnected.

thanks