[cisco-voip] PRI serial "lockout"? what is SBC talking about

[IT]

Hi,

My PRI on a 2801 just died, and SBC said they were able to bring the
line back up just by running a test. They said that this "rebooted" the
line, and when they first logged in they saw that the lines were
"locked" out, and this was generally caused by my equipment. What can I
do to verify if this is correct? What did they mean? It's a serial card,
and here is the show intereface serial 0/2/0:23 output:

show interfaces serial 0/2/0:23
Serial0/2/0:23 is up, line protocol is up (spoofing)
  Hardware is DSX1
  MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation HDLC, loopback not set
  Last input 00:00:15, output 00:00:15, 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
     204146 packets input, 973103 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 2 giants, 0 throttles
     115437 input errors, 115437 CRC, 51503 frame, 30018 overrun, 0
ignored, 85696 abort
     204467 packets output, 978336 bytes, 0 underruns
     0 output errors, 0 collisions, 12 interface resets
     0 output buffer failures, 0 output buffers swapped out
     30 carrier transitions
  Timeslot(s) Used:24, SCC: 0, Transmitter delay is 0 flags

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