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Cisco 2199 PX Router Issue

aquaium79
Level 1
Level 1

Just wondering if someone could help with an issue we're having at the moment. We are suddenly not able to receive internal calls or make any external calls. We have contacted our line providers and they have said that everything looks good with the line and are blaming an internal fault with the system.

 

I have done some testing, running the "show ISDN status" command shows the following:

 

pxrouter>show isdn status
Global ISDN Switchtype = primary-net5

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may not apply

ISDN Serial0/0/0:15 interface
dsl 0, interface ISDN Switchtype = primary-net5
L2 Protocol = Q.921 0x0000 L3 Protocol(s) = CCM MANAGER 0x0003
Layer 1 Status:
DEACTIVATED
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x00000000
Number of L2 Discards = 0, L2 Session ID = 204
Total Allocated ISDN CCBs = 0

 

Layer 1 Status is showing as deactivated. On the router itself, the "AL" light is showing amber. The strange thing is with the cable unplugged the "AL" light on the router is still showing as amber and if I run the "show ISDN status" command, it's still showing "Layer 1 Status: DEACTIVATED"

 

I also ran the "show inventory" command and the interface card is shown with details of serial number so I think the card is not at fault.

 

Below are some pictures of the PX Router and the BT box, could anyone help out and let me know how we can resolve this and if it is in fact in internal issue or an external one with our line providers?

 

 

PX Router (Cisco 2199) - Pink Cable is the connection going to the BT BoxPX Router (Cisco 2199) - Pink Cable is the connection going to the BT Box

 

BT BoxBT Box

 

26 Replies 26

here is a good link for how to configure an PRI E1

https://community.cisco.com/t5/collaboration-voice-and-video/basic-isdn-pri-e1-configuration/ta-p/3149294

 

Double check your config against it.

 

The fact, that with a loopback cable you have layer 1 come up is a good thing, however I can not explain to you why when unplugged it does not show active like mine does.

 

I do see your missing the license accept end user agreement in your config, I typically always do this you might as well.

 

Also please provide a

show version

show inventory

show controller E1

show isdn service

show ccm-manger

 

 

Also please confirm the under of channels that this circuit is configured for.

 

In my original post I had changed the password letters/numbers however, I have removed the entery all together now.

 

The config on the system has not been touched or changed. It's been the same it has since it was first set up. How do I confirm number of channels this circuit is configured for?

 

Below are responses from all the commands you suggested:

 

pxrouter>show version
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.0(1)M4, REL
EASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Thu 28-Oct-10 18:32 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M9, RELEASE SOFTWARE (fc1)

pxrouter uptime is 2 years, 2 weeks, 6 days, 1 hour, 14 minutes
System returned to ROM by power-on
System restarted at 13:28:21 BST Thu Jul 20 2017
System image file is "flash0:c2900-universalk9-mz.SPA.150-1.M4.bin"
Last reload type: Normal Reload


This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco CISCO2911/K9 (revision 1.0) with 479232K/45056K bytes of memory.
Processor board ID FCZ1504740K
3 Gigabit Ethernet interfaces
31 Serial interfaces
1 Channelized E1/PRI port
DRAM configuration is 64 bits wide with parity enabled.
255K bytes of non-volatile configuration memory.
248472K bytes of ATA System CompactFlash 0 (Read/Write)


License Info:

License UDI:

-------------------------------------------------
Device# PID SN
-------------------------------------------------
*0 CISCO2911/K9 FCZXXXXXXXXX

 

Technology Package License Information for Module:'c2900'

----------------------------------------------------------------
Technology Technology-package Technology-package
Current Type Next reboot
-----------------------------------------------------------------
ipbase ipbasek9 Permanent ipbasek9
security None None None
uc uck9 Permanent uck9
data None None None

Configuration register is 0x2102

 

pxrouter>show inventory

NAME: "CISCO2911/K9 chassis", DESCR: "CISCO2911/K9 c
PID: CISCO2911/K9 , VID: V02 , SN: FXXXXXXXXXXX

NAME: "VWIC2-1MFT-T1/E1 - 1-Port RJ-48 Multiflex Tru
0", DESCR: "VWIC2-1MFT-T1/E1 - 1-Port RJ-48 Multifl
PID: VWIC2-1MFT-T1/E1 , VID: V01 , SN: FXXXXXXXXXXX

 

pxrouter>show controller E1
E1 0/0/0 is down.
Applique type is Channelized E1 - balanced
Transmitter is sending remote alarm.
Receiver is getting AIS.
alarm-trigger is not set
Version info Firmware: 20100222, FPGA: 13, spm_count = 0
Framing is CRC4, Line Code is HDB3, Clock Source is Line.
Data in current interval (153 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, 153 Unavail Secs
Total Data (last 24 hours)
2369 Line Code Violations, 18 Path Code Violations,
2 Slip Secs, 1 Fr Loss Secs, 2 Line Err Secs, 0 Degraded Mins,
2 Errored Secs, 0 Bursty Err Secs, 1 Severely Err Secs, 86352 Unavail Secs

 

pxrouter>show isdn service
PRI Channel Statistics:

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may not appl
y

ISDN Se0/0/0:15, Channel [1-31]
Configured Isdn Interface (dsl) 0
Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Service State (0=Inservice 1=Maint 2=Outofservice 8=MaintPend 9=OOSPend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
State : 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2


pxrouter>show ccm-manager
MGCP Domain Name: pxrouter
Priority Status Host
============================================================
Primary Registered 10.XXX.XX.X
First Backup Backup Ready 10.XXX.XX.X
Second Backup None

Current active Call Manager: 10.XXX.XX.X
Backhaul/Redundant link port: 2428
Failover Interval: 30 seconds
Keepalive Interval: 15 seconds
Last keepalive sent: 14:55:04 BST Aug 9 2019 (elapsed time: 00:00:03)
Last MGCP traffic time: 14:55:04 BST Aug 9 2019 (elapsed time: 00:00:03)
Last failover time: 23:02:02 BST Jul 23 2018 from (10.193.12.6)
Last switchback time: 23:02:32 BST Jul 23 2018 from (10.193.12.5)
Switchback mode: Graceful
MGCP Fallback mode: Not Selected
Last MGCP Fallback start time: None
Last MGCP Fallback end time: None
MGCP Download Tones: Disabled
TFTP retry count to shut Ports: 2

Backhaul Link info:
Link Protocol: TCP
Remote Port Number: 2428
Remote IP Address: 10.XXX.XX.X
Current Link State: OPEN
Statistics:
Packets recvd: 372264
Recv failures: 0
Packets xmitted: 410432
Xmit failures: 0
PRI Ports being backhauled:
Slot 0, VIC 0, port 0
Configuration Auto-Download Information
=======================================
Current version-id: 1389010238-6e6580f9-93e4-42f5-aad4-0a34802cd98a
Last config-downloaded:00:00:00
Current state: Waiting for commands
Configuration Download statistics:
Download Attempted : 17
Download Successful : 17
Download Failed : 0
TFTP Download Failed : 3
Configuration Attempted : 5
Configuration Successful : 5
Configuration Failed(Parsing): 0
Configuration Failed(config) : 0
Last config download command: New Registration
FAX mode: cisco
Configuration Error History:
no network-clock-participate wic 0
end

 

Did you truncate your show inventory where are your PVDMs?

 

You might want to just bounce the router at this point

 

If that doesn't bring it up I would reach back to carrier for the amount of channels and ask them to confirm that circuit is up by putting your loopback connected to the cable you connect to the 2911 with.

No, I didn't truncate the show inventory. I'm not sure what PVDMs are, sorry.

 

What do you mean by bounce the router?

 

We called the carrier again and they said they would be sending out an engineer. Not sure when they will come tho!

Here is a below sample of my routers output. You can see the PVDMS below. PVDMs are needed to terminate any TDM/ analog voice calls. 

 

NAME: "CISCO2911/K9", DESCR: "CISCO2911/K9 chassis, Hw Serial#: , Hw Revision: 1.0"
PID: CISCO2911/K9 , VID: V05 , SN: 

 

NAME: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot 1", DESCR: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1"
PID: VWIC2-2MFT-T1/E1 , VID: V01 , SN: 

 

NAME: "PVDM3 DSP DIMM with 64 Channels on Slot 0 SubSlot 4", DESCR: "PVDM3 DSP DIMM with 64 Channels"
PID: PVDM3-64 , VID: V01 , SN

Sorry, did everything look OK frrom the other commands that I'd run? Nothing unsual, that would cause this problem?

Everything else is looking fine, but if your not seeings you pvdms, it would appear.  By Bounce I mean restart.

 

Before you do that can you do a 

show voice dsp

 

does it look like this

DSP DSP DSPWARE CURR BOOT PAK TX/RX
TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABORT PACK CO UNT
==== === == ======== ========== ===== ======= === == ========= == ===== ======== ====
edsp 0001 01 g729r8 p 0.1 IDLE 50/0/1.1
edsp 0002 02 g729r8 p 0.1 IDLE 50/0/1.2
edsp 0003 01 g729r8 p 0.1 IDLE 50/0/2.1
edsp 0004 02 g729r8 p 0.1 IDLE 50/0/2.2
edsp 0005 01 g729r8 p 0.1 IDLE 50/0/3.1
edsp 0006 02 g729r8 p 0.1 IDLE 50/0/3.2
edsp 0007 01 g729r8 p 0.1 IDLE 50/0/4.1
edsp 0008 02 g729r8 p 0.1 IDLE 50/0/4.2

Just to hark back to some of the earlier comments, if this is a BT (British Telecom) ISDN-30e then it will be an E1 interface, not T1.

Regarding the actual issue, Layer 1 down is almost always a carrier fault.  I say almost because occasionally it is a hardware fault in the router or interface, but maybe 95 out of 100 are the carrier.

By "bouncing" the poster means power cycling the router.  Make sure configuration is saved, power it off for a minute or so then power back up.

Yeah I am using T1 incorrectly and I am meaning E1. Thank you for clearing that up Tony. Yeah I do agree with you here, mostly these kind of issues are the carriers and having one of them put a loopback on it will help.

Tthe lack of PVDM showing up in a show inventory is alarming however.

I will run the "show inventory" command again incase I've missed something. I'll also run the "show voice DSP" command and report back here. It'll probably be Monday now, unless I get some time to sit down at the weekend to look at it.

 

Once again, thanks for all the help and advice.

If pvdms are there it is probably telco issue.

OK, so looks like the pvdms were in the show inventory command, not sure why or how I managed to miss it. Below is the result from the command.

 

Just out of interest, I tried inserting the T1 Loopback cable in to the back of the white BT box (pictured in my original post). I replaced it in the same port as the pink cable that came from the PX router. When I did that the "CUST" light was still amber, could it be an issue with the BT box or would the T1 Loopback cable have no affect when inserted in to the BT box?

 

pxrouter>show inventory
NAME: "CISCO2911/K9 chassis", DESCR: "CISCO2911/K9 chassis"
PID: CISCO2911/K9 , VID: V02 , SN: FXXXXXXXXX

NAME: "VWIC2-1MFT-T1/E1 - 1-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot
0", DESCR: "VWIC2-1MFT-T1/E1 - 1-Port RJ-48 Multiflex Trunk - T1/E1"
PID: VWIC2-1MFT-T1/E1 , VID: V01 , SN: FXXXXXXXXX

NAME: "PVDM3 DSP DIMM with 32 Channels on Slot 0 SubSlot 4", DESCR: "PVDM3 DSP D
IMM with 32 Channels"
PID: PVDM3-32 , VID: V01 , SN: FXXXXXXXXX

NAME: "PVDM3 DSP DIMM with 16 Channels on Slot 0 SubSlot 5", DESCR: "PVDM3 DSP D
IMM with 16 Channels"
PID: PVDM3-16 , VID: V01 , SN: FXXXXXXXXXX

NAME: "C2911 AC Power Supply", DESCR: "C2911 AC Power Supply"
PID: PWR-2911-AC , VID: V01, SN: AXXXXXXXX