Re: Connectivity between Voice gateway and Alcaltel PBX

lehoangduong · ‎10-04-2010

Dear All Experts !

Please help me this problem. My company has Alcatel OminiPCX Enterprise PBX. There is a NPRAE-2 Card on this PBX and It support only E1 Qsig signalling. So now I need connect it to Cisco voice gateway 3845 via E1 Qsig. But I has Layer1 Problem. The controller is still down. I has just some test:

1. Loop:

- PBX loop : OK

- Voice-gateway loop: OK

- But when they connect together (TX ring on Voice gateway connect to RX ring on PBX and vice versa), the controller is down. I'm sure that no cable problem.

2. Both of devices have ground connectivity.

3. I changed framming type on controller E1: CRC - No-CRC and changed linecode: ami - hdb3 but not successful.

Please give me some suggestion.

Thanks so much !

Muthurani Lavanya Paneerselvam · ‎10-05-2010

Hi

Can you check are you getting the slip errors on your E1 side ? You can do it by giving the following command on the voice gateway.

" show controllers e1" for your E1

Pl revert with the controllers e1 output. Based on this you can identify whether its a E1 related issue or your system related.

Thank you.

paolo bevilacqua · ‎10-05-2010

Send "show controllers E1".

lehoangduong · ‎10-05-2010

Thanks for your reply. Here is the output of show controller e1 command.

-------------------------------------------------------------------------------------------------------------------

E1 0/0/0 is down.
Applique type is Channelized E1 - balanced
Cablelength is Unknown
Description:
Transmitter is sending remote alarm.
Receiver has loss of frame.
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 (690 seconds elapsed):
     16399 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, 690 Unavail Secs

-----------------------------------------------------------------------------------------------------------------------

I think controller 1 up only:

1. Tx and Rx ring on VG and PBX connects together exactly.

2. Framming and linecode on both devices are the same.

3. (Optional) VG and PBX have ground connectivity.

Looking forward from you soon. Thanks.

lehoangduong · ‎10-05-2010

I send to you "Cisco configuraiton guide" that gives step-by-step configuration on PBX and Voice-gateway. But there are some differences:

1. on Alcatel PBX, we use NPRAE card (in cisco document, it's PRA2). NPRAE gives two E1 ISDN interfaces.

2. We use Cisco voice gateway 3845:

BTC-OCS-GW#show version
Cisco IOS Software, 3800 Software (C3845-ADVENTERPRISEK9-M), Version 12.4(24)T4, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Fri 03-Sep-10 09:59 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T15, RELEASE SOFTWARE (fc1)

BTC-OCS-GW uptime is 2 hours, 11 minutes
System returned to ROM by power-on
System image file is "flash:/c3845-adventerprisek9-mz.124-24.T4.bin"

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 you require further assistance please contact us by sending email to
export@cisco.com. 3845 (revision 1.0) with 484351K/39936K bytes of memory.
Processor board ID FTX1433A10H
2 Gigabit Ethernet interfaces
31 Serial interfaces
2 Channelized/Clear E1/PRI ports
1 Virtual Private Network (VPN) Module
4 Voice FXO interfaces
DRAM configuration is 64 bits wide with parity enabled.
447K bytes of NVRAM.
126976K bytes of ATA System CompactFlash (Read/Write)

If

Cisco

Configuration register is 0x2102

Muthurani Lavanya Paneerselvam · ‎10-06-2010

Hi Leho

Based on your "show controller e1" output, its clear you are getting an alarm "Transmitter is sending remote alarm" & receiver has loss of

frame. So you need to check your physical connectivity. Isolate your E1 connectivity from the Voice Gw and PBX and check by giving loops-break.

I have attached the link for your reference.

E1 0/0/0 is down.
Applique type is Channelized E1 - balanced
Cablelength is Unknown
Description:
Transmitter is sending remote alarm.
Receiver has loss of frame.
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 (690 seconds elapsed):
     16399 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, 690 Unavail Secs

http://www.cisco.com/en/US/partner/tech/tk713/tk628/technologies_tech_note09186a00800a7591.shtml#txrai

Pl revert if you still need some assistance.. Thanks.