[cisco-voip] Help US Voice T1 issue

[Brian Meade (brmeade)]

I've seen some people state the VWIC3 is a little more sensitive to noise and such causing similar issues that were resolved switching to a VWIC2.  I'd try replacing the cable if possible.

Brian

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Samuel Souza
Sent: Thursday, September 26, 2013 10:18 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Help US Voice T1 issue

Hello guys,

We are facing a problem in a US customer.

The customer is migration from a Nortel PBX to a 2951 router with a VWIC3 T1 card, and when the AT&T connects the PSTN on the router  the T1 stays down, but when the AT&T connects on Nortel again works fine.

Below, some tests that we did:
The configuration seems to be ok because we tested in a 2821 router with a VWIC2 card and it works.
We tried to configure the VWIC2 card on the 2951 router and it works also.
It is not working only when we connect on the VWIC3 card.
We tried also to replace the router and the cards but still don't works.
A hard loopback plug allows the VWIC3 T1 to come up fine.

Information:

Call flow

ip phone --> cucm --> MGCP GW ---> Telco

Router Model:
CISCO2951/K9
IOS:
c2951-universalk9-mz.SPA.151-4.M6.bin
T1 Card:
WIC Slot 2:
                VWIC3-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1

Configuration:

card type t1 0 2

network-clock-participate wic 2
network-clock-select 1 T1 0/2/0

isdn switch-type primary-ni

controller T1 0/2/0
cablelength long 0db
pri-group timeslots 1-24 service mgcp
!
controller T1 0/2/1
cablelength long 0db
pri-group timeslots 1-24 service mgcp

!
interface Serial0/2/0:23
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn incoming-voice voice
isdn bind-l3 ccm-manager
no cdp enable
!
interface Serial0/2/1:23
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn incoming-voice voice
isdn bind-l3 ccm-manager
no cdp enable

voice-port 0/2/0:23
echo-cancel coverage 64
!
voice-port 0/2/1:23
echo-cancel coverage 64
!
Show controllers:

T1 0/2/0 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:Failure LOF State:Failure
  Version info FPGA Rev: 08121917, FPGA Type: PRK4
  Framing is ESF, Line Code is B8ZS, Clock Source is Line.
  CRC Threshold is 320. Reported from firmware  is 320.
  Data in current interval (429 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     73 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 429 Unavail Secs
  Total Data (last 52 15 minute intervals):
     1 Line Code Violations, 0 Path Code Violations,
     8173 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins,
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 46800 Unavail Secs
T1 0/2/1 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:Failure LOF State:Failure
  Version info FPGA Rev: 08121917, FPGA Type: PRK4
  Framing is ESF, Line Code is B8ZS, Clock Source is Line.
  CRC Threshold is 320. Reported from firmware  is 320.
  Data in current interval (429 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     79 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 429 Unavail Secs
  Total Data (last 52 15 minute intervals):
     1 Line Code Violations, 0 Path Code Violations,
     8629 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins,
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 46800 Unavail Secs

Show interfaces:
Serial0/2/0:0 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, crc 16, loopback not set
  Keepalive set (10 sec)
  Last input never, 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  0/0/256 (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
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 IP multicasts)
     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, 0 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions

Serial0/2/1:0 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, crc 16, loopback not set
  Keepalive set (10 sec)
  Last input never, 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  0/0/256 (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
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 IP multicasts)
     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, 0 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions

Many thanks!

Samuel Souza.
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