B8ZS Line code issue

I have an issue with my 4xT1 circuit. Verizon is saying that one port one of my interfaces is not sending the B8ZS line code. That interface is configured the same as the other 3, but shows down-down when linked with Verizon. Could it be a defective port on the WIC?

Verizon has verified the B8ZS code all the way good to the cable right before the router (loopback).


T1 0/1/0 is down.
  Applique type is Channelized T1
  Cablelength is long 0db
  Transmitter is sending remote alarm.
  Receiver has loss of signal.
  alarm-trigger is not set
  Soaking time: 3, Clearance time: 10
  AIS State:Clear  LOS State:Clear  LOF State:Clear
  Version info Firmware: 20090408, FPGA: 13, spm_count = 0
  Framing is ESF, Line Code is B8ZS, Clock Source is Line.
  CRC Threshold is 320. Reported from firmware  is 320.
  Data in current interval (364 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 364 Unavail Secs
  Total Data (last 95 15 minute intervals):
     7798243 Line Code Violations, 104057 Path Code Violations,
     125 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 85500 Unavail Secs
dassr23Asked:
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Jan SpringerCommented:
When telco does a remote loopback, they can typically only hit the outside of the smartjack, not the inside to which your cable connects.

So, the problem could be the smartjack, the cable or the router port.
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dassr23Author Commented:
Its not we loopback'd past the smart jack. The line code is good at each point up until it hits my router.

If switch a working T1 to the WIC port that is not sending the linecode, it does not sync up either.
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Jan SpringerCommented:
can you paste the configuration snippet of this interface, a sh int of this interface and a sh controller of the t1 controller?
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dassr23Author Commented:
Serial0/1/0:1 is down, line protocol is down
  Hardware is GT96K Serial
  MTU 4470 bytes, BW 1536 Kbit/sec, DLY 20000 usec,
     reliability 252/255, txload 1/255, rxload 1/255
  Encapsulation FRAME-RELAY IETF, loopback not set
  Bundle Link of bundle MFR1
  Last input never, output 3w4d, output hang never
  Last clearing of "show interface" counters 3d00h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 7 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     1 carrier transitions
  Timeslot(s) Used:1-24, SCC: 0, Transmitter delay is 0 flags

___________________________________________________________________________________

T1 0/1/0 is down.
  Applique type is Channelized T1
  Cablelength is long 0db
  Transmitter is sending remote alarm.
  Receiver has loss of signal.
  alarm-trigger is not set
  Soaking time: 3, Clearance time: 10
  AIS State:Clear  LOS State:Clear  LOF State:Clear
  Version info Firmware: 20090408, FPGA: 13, spm_count = 0
  Framing is ESF, Line Code is B8ZS, Clock Source is Line.
  CRC Threshold is 320. Reported from firmware  is 320.
  Data in current interval (392 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 392 Unavail Secs
  Total Data (last 24 hours)
     0 Line Code Violations, 0 Path Code Violations,
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 86400 Unavail Secs
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Jan SpringerCommented:
what is your config "show int s0/1/0:1"

is the cable currently connected to the smartjack and the router?
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dassr23Author Commented:
cable is connected all the way though. s0/1/0:1 is the config on the controller that is bundled with the MLFR
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Jan SpringerCommented:
This:

 Serial0/1/0:1 is down, line protocol is down

means that the interface is admin up and the router does not see the cable connected.

So, if the inside port of the smartjack is good and the cable is good, then the WIC is bad.
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dassr23Author Commented:
That's what I thought, but wanted to confirm cause I've never see a WIC go bad before.

Thanks!
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