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Troubleshooting DS3 link

I need assistance in figuring out what is going on with a Sprint DS3. I called Sprint and they said they had a problem, but now it's fixed. I noticed at first the interface was flapping, but now it's just down. I've inherited this so I'm not at all familiar with DS3. I'm needing some suggestions on what to try to get this thing back up or verify that the problem still with the carrier.

show controllers t3

T3 1/0 is down.

Applique type is Subrate T3

Transmitter is sending remote alarm.

Receiver has loss of frame.

MDL transmission is disabled

FEAC code received: No code is being received

Framing is C-BIT Parity, Line Code is B3ZS, Clock Source is Internal

Data in current interval (860 seconds elapsed):

65535 Line Code Violations, 40914 P-bit Coding Violation

41412 C-bit Coding Violation, 0 P-bit Err Secs

0 P-bit Severely Err Secs, 0 Severely Err Framing Secs

860 Unavailable Secs, 0 Line Errored Secs

0 C-bit Errored Secs, 0 C-bit Severely Errored Secs

Total Data (last 31 15 minute intervals):

1966050 Line Code Violations, 242914 P-bit Coding Violation,

252595 C-bit Coding Violation, 41 P-bit Err Secs,

9 P-bit Severely Err Secs, 0 Severely Err Framing Secs,

25634 Unavailable Secs, 44 Line Errored Secs,

40 C-bit Errored Secs, 9 C-bit Severely Errored Secs

show interfaces serial 1/0

Serial1/0 is down, line protocol is down

Hardware is DSXPNM Serial

Internet address is

MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec,

reliability 197/255, txload 1/255, rxload 1/255

Encapsulation HDLC, crc 16, loopback not set

Keepalive set (10 sec)

Last input 23:14:27, output 00:30:37, output hang never

Last clearing of "show interface" counters 5d00h

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 7

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

5461 packets input, 758807 bytes, 0 no buffer

Received 231 broadcasts, 858 runts, 552 giants, 0 throttles

186378003 input errors, 186375374 CRC, 12111197 frame, 123392673 overrun, 0 ignored, 16788171 abort

6479 packets output, 2393729 bytes, 0 underruns

0 output errors, 0 collisions, 14436 interface resets

0 output buffer failures, 0 output buffers swapped out

16 carrier transitions

DSU mode 0, bandwidth 44210, real bandwidth 44210, scramble 1

Hall of Fame Super Gold

Re: Troubleshooting DS3 link


you interface is down due to garbage instead of date being received., provider's fault.

If you want to be extra cautious, do "shut / no shut" under controller t3 1/0, but likely that won't change things.