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timotsmith at gmail.com
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 Posted: Tue Jun 30, 2015 3:35 am Post subject: [asterisk-users] Help With Physical Layer |
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Hello,
Anyone to help me with this issue? It has never worked 
On Wed, May 20, 2015 at 11:34 AM, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote:
| Quote: | Hello users,
I have a Digium Te235 and asterisk 13 which have worked well with 1 carrier but we have failed to add a 2nd carrier. The second telco brings their E1 line over finer, terminated in a RAD modem and they give me ethernet to the E1 card. It's the first time i am having install such a solution, which ideally would be not a big problem.
However, The physical layer has failed to come up! I have tried the same setup in an Alcatel OmniOCX and it works well. I can confirm that the port is also well configured because when I interchange the cables (with the exiting cable from the other telco), the alarm clears emmediately for the 1st telco and becomes RED for the 2nd telco. A loop also clears the alarm on both ports.
The telco has told me to make sure that Line Impedance is 120 ohms but There's no where to set that and when I was reading, I was told that E1 is already 120 ohms so no need to change anything.
Has anyone here experienced this? What other things can I try?
Thank you!
Regards,
Tim
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dduffett at digium.com
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| Posted: Tue Jun 30, 2015 4:37 am Post subject: [asterisk-users] Help With Physical Layer |
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What response do you get to *CLI> pri show spans ?
On 30 June 2015 at 09:34, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote:
| Quote: | Hello,
Anyone to help me with this issue? It has never worked
On Wed, May 20, 2015 at 11:34 AM, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote:
| Quote: | Hello users,
I have a Digium Te235 and asterisk 13 which have worked well with 1 carrier but we have failed to add a 2nd carrier. The second telco brings their E1 line over finer, terminated in a RAD modem and they give me ethernet to the E1 card. It's the first time i am having install such a solution, which ideally would be not a big problem.
However, The physical layer has failed to come up! I have tried the same setup in an Alcatel OmniOCX and it works well. I can confirm that the port is also well configured because when I interchange the cables (with the exiting cable from the other telco), the alarm clears emmediately for the 1st telco and becomes RED for the 2nd telco. A loop also clears the alarm on both ports.
The telco has told me to make sure that Line Impedance is 120 ohms but There's no where to set that and when I was reading, I was told that E1 is already 120 ohms so no need to change anything.
Has anyone here experienced this? What other things can I try?
Thank you!
Regards,
Tim
|
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_____________________________________________________________________
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New to Asterisk? Join us for a live introductory webinar every Thurs:
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David Duffett
Digium, Inc. · Director, Worldwide Asterisk Community
6 Landscape Close · Weston on the Green · Bicester · Oxfordshire OX25 3SX · UK
direct/fax: +1 256 428 6119 · mobile: +44 7722 442236
twitter: dduffett · linkedin: www.linkedin.com/in/davidduffett
Check us out at: http://digium.com · http://asterisk.org |
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dnoll at wi.rr.com
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| Posted: Tue Jun 30, 2015 5:44 am Post subject: [asterisk-users] Help With Physical Layer |
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On Tue, Jun 30, 2015 at 3:34 AM, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote:
| Quote: | Hello,
Anyone to help me with this issue? It has never worked
On Wed, May 20, 2015 at 11:34 AM, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote:
| Quote: | Hello users,
I have a Digium Te235 and asterisk 13 which have worked well with 1 carrier but we have failed to add a 2nd carrier. The second telco brings their E1 line over finer, terminated in a RAD modem and they give me ethernet to the E1 card. It's the first time i am having install such a solution, which ideally would be not a big problem.
However, The physical layer has failed to come up! I have tried the same setup in an Alcatel OmniOCX and it works well. I can confirm that the port is also well configured because when I interchange the cables (with the exiting cable from the other telco), the alarm clears emmediately for the 1st telco and becomes RED for the 2nd telco. A loop also clears the alarm on both ports.
The telco has told me to make sure that Line Impedance is 120 ohms but There's no where to set that and when I was reading, I was told that E1 is already 120 ohms so no need to change anything.
Has anyone here experienced this? What other things can I try?
Thank you!
Regards,
Tim
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Have you tried a E-1 Cross Over cable from your RAD modem to the Digium card? |
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duncan at e-simple.co.nz
Guest
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| Posted: Tue Jun 30, 2015 6:15 am Post subject: [asterisk-users] Help With Physical Layer |
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| ------ Original Message ------ From: "Tony Kasule" <timotsmith@gmail.com (timotsmith@gmail.com)> To: "Asterisk Users Mailing List - Non-Commercial Discussion" <asterisk-users@lists.digium.com (asterisk-users@lists.digium.com)> Sent: 30/06/2015 8:34:47 p.m. Subject: Re: [asterisk-users] Help With Physical Layer Hello, Anyone to help me with this issue? It has never worked Hi Tony I'm not familiar with the card you but 120 ohm is usually twisted pair, and 75 ohm is coax (usually). If it is changeable its usually done with jumpers on the card. I have used RAD modems before and their cable will have a specific pinout that you need to match. I doubt your digium card by default matches the pins, but maybe, and perhaps maybe your alcatel did. There will be a tx pair and an rx pair and you need to make sure they connect to the rx and tx pairs on the digium preferably with the same polarity. If you are getting no signal I would think its that. You can use a multimeter to check for voltage on the pins. Once you get that sorted another catch maybe timing. You will need to take E1 timing from one or other of the Telco's, with one as the primary source. If they for some reason aren't synced you will get errors every so often Good luck Cheers Duncan On Wed, May 20, 2015 at 11:34 AM, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote: Hello users, I have a Digium Te235 and asterisk 13 which have worked well with 1 carrier but we have failed to add a 2nd carrier. The second telco brings their E1 line over finer, terminated in a RAD modem and they give me ethernet to the E1 card. It's the first time i am having install such a solution, which ideally would be not a big problem. However, The physical layer has failed to come up! I have tried the same setup in an Alcatel OmniOCX and it works well. I can confirm that the port is also well configured because when I interchange the cables (with the exiting cable from the other telco), the alarm clears emmediately for the 1st telco and becomes RED for the 2nd telco. A loop also clears the alarm on both ports. The telco has told me to make sure that Line Impedance is 120 ohms but There's no where to set that and when I was reading, I was told that E1 is already 120 ohms so no need to change anything. Has anyone here experienced this? What other things can I try? Thank you! Regards, Tim |
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timotsmith at gmail.com
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| Posted: Wed Jul 01, 2015 1:59 am Post subject: [asterisk-users] Help With Physical Layer |
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Dear David,
I am sorry, I can give the answer right now as the box is at a remote location where I don't have access right now. However, I think the card is ok and al the spans are working. Yesterday I had asked the telco to bring a new RAD modem and I also took there another dell optiplex 3010 desktop with another TE235 card in it but same results! I can confirm that the cards are ok!
On Tue, Jun 30, 2015 at 12:36 PM, David Duffett <dduffett@digium.com (dduffett@digium.com)> wrote:
| Quote: | What response do you get to *CLI> pri show spans ?
On 30 June 2015 at 09:34, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote:
| Quote: | Hello,
Anyone to help me with this issue? It has never worked
On Wed, May 20, 2015 at 11:34 AM, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote:
| Quote: | Hello users,
I have a Digium Te235 and asterisk 13 which have worked well with 1 carrier but we have failed to add a 2nd carrier. The second telco brings their E1 line over finer, terminated in a RAD modem and they give me ethernet to the E1 card. It's the first time i am having install such a solution, which ideally would be not a big problem.
However, The physical layer has failed to come up! I have tried the same setup in an Alcatel OmniOCX and it works well. I can confirm that the port is also well configured because when I interchange the cables (with the exiting cable from the other telco), the alarm clears emmediately for the 1st telco and becomes RED for the 2nd telco. A loop also clears the alarm on both ports.
The telco has told me to make sure that Line Impedance is 120 ohms but There's no where to set that and when I was reading, I was told that E1 is already 120 ohms so no need to change anything.
Has anyone here experienced this? What other things can I try?
Thank you!
Regards,
Tim
|
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
New to Asterisk? Join us for a live introductory webinar every Thurs:
http://www.asterisk.org/hello
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
|
--
David Duffett
Digium, Inc. · Director, Worldwide Asterisk Community
6 Landscape Close · Weston on the Green · Bicester · Oxfordshire OX25 3SX · UK
direct/fax: [url=tel:%2B1%20256%20428%206119]+1 256 428 6119[/url] · mobile: [url=tel:%2B44%207722%20442236]+44 7722 442236[/url]
twitter: dduffett · linkedin: www.linkedin.com/in/davidduffett
Check us out at: http://digium.com · http://asterisk.org
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
New to Asterisk? Join us for a live introductory webinar every Thurs:
http://www.asterisk.org/hello
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
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timotsmith at gmail.com
Guest
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| Posted: Wed Jul 01, 2015 2:03 am Post subject: [asterisk-users] Help With Physical Layer |
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Hi Dale,
Yes, I tried a cross-over cable, I also tried terminated a new E1- cable with only PINS 1-2 and 4-5 but still no luck. Everything I tried, I would replicate with the other telco's setup and results would be positive.
I have a feeling this new telco brought a new model of a RAD modem that somehow doesn't work with our cards but am struggling to find the technical reasons (and possible fixes) to support that hypothesis.
On Tue, Jun 30, 2015 at 1:43 PM, Dale Noll <dnoll@wi.rr.com (dnoll@wi.rr.com)> wrote:
| Quote: |
On Tue, Jun 30, 2015 at 3:34 AM, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote:
| Quote: | Hello,
Anyone to help me with this issue? It has never worked
On Wed, May 20, 2015 at 11:34 AM, Tony Kasule <timotsmith@gmail.com (timotsmith@gmail.com)> wrote:
| Quote: | Hello users,
I have a Digium Te235 and asterisk 13 which have worked well with 1 carrier but we have failed to add a 2nd carrier. The second telco brings their E1 line over finer, terminated in a RAD modem and they give me ethernet to the E1 card. It's the first time i am having install such a solution, which ideally would be not a big problem.
However, The physical layer has failed to come up! I have tried the same setup in an Alcatel OmniOCX and it works well. I can confirm that the port is also well configured because when I interchange the cables (with the exiting cable from the other telco), the alarm clears emmediately for the 1st telco and becomes RED for the 2nd telco. A loop also clears the alarm on both ports.
The telco has told me to make sure that Line Impedance is 120 ohms but There's no where to set that and when I was reading, I was told that E1 is already 120 ohms so no need to change anything.
Has anyone here experienced this? What other things can I try?
Thank you!
Regards,
Tim
|
|
Have you tried a E-1 Cross Over cable from your RAD modem to the Digium card?
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
New to Asterisk? Join us for a live introductory webinar every Thurs:
http://www.asterisk.org/hello
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
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timotsmith at gmail.com
Guest
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| Posted: Wed Jul 01, 2015 2:11 am Post subject: [asterisk-users] Help With Physical Layer |
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On Tue, Jun 30, 2015 at 2:15 PM, Duncan Turnbull <duncan@e-simple.co.nz (duncan@e-simple.co.nz)> wrote:
| Quote: |
Hi Tony
I'm not familiar with the card you but 120 ohm is usually twisted pair, and 75 ohm is coax (usually). If it is changeable its usually done with jumpers on the card.
|
The new Digium cards have no jumpers anymore and I don't think they support coaxial cables. The only changes we can make on the digium cards is to switch between E1/T1 modes and that's done when loading it in the kernel using modprobe.
| Quote: | I have used RAD modems before and their cable will have a specific pinout that you need to match. I doubt your digium card by default matches the pins, but maybe, and perhaps maybe your alcatel did. There will be a tx pair and an rx pair and you need to make sure they connect to the rx and tx pairs on the digium preferably with the same polarity. If you are getting no signal I would think its that. You can use a multimeter to check for voltage on the pins.
|
I would doubt it's the pinout but it's possible. I have tried several cables (cross-over, straight-through, E1) and both didn't work but surprisingly, they do on the other RAD modem that comes to the same PBX.
| Quote: |
Once you get that sorted another catch maybe timing. You will need to take E1 timing from one or other of the Telco's, with one as the primary source. If they for some reason aren't synced you will get errors every so often
|
Thanks for the pointers.
I am going to keep trying several things and if I get a break through, I'll definitely share the results.
For no, any more help is welcome.
thanks! |
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ludwingn at gmail.com
Guest
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| Posted: Wed Jul 01, 2015 2:38 am Post subject: [asterisk-users] Help With Physical Layer |
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Try to check CRC4, both hace to be the same
Enviado desde mi smartphone BlackBerry 10.
De: Tony Kasule
Enviado: miércoles 1 de julio de 2015 01:11 a.m.
Para: Duncan Turnbull; Asterisk Users Mailing List - Non-Commercial Discussion
Responder a: Asterisk Users Mailing List - Non-Commercial Discussion
Asunto: Re: [asterisk-users] Help With Physical Layer
On Tue, Jun 30, 2015 at 2:15 PM, Duncan Turnbull <duncan@e-simple.co.nz (duncan@e-simple.co.nz)> wrote:
| Quote: |
Hi Tony
I'm not familiar with the card you but 120 ohm is usually twisted pair, and 75 ohm is coax (usually). If it is changeable its usually done with jumpers on the card.
|
The new Digium cards have no jumpers anymore and I don't think they support coaxial cables. The only changes we can make on the digium cards is to switch between E1/T1 modes and that's done when loading it in the kernel using modprobe.
| Quote: | I have used RAD modems before and their cable will have a specific pinout that you need to match. I doubt your digium card by default matches the pins, but maybe, and perhaps maybe your alcatel did. There will be a tx pair and an rx pair and you need to make sure they connect to the rx and tx pairs on the digium preferably with the same polarity. If you are getting no signal I would think its that. You can use a multimeter to check for voltage on the pins.
|
I would doubt it's the pinout but it's possible. I have tried several cables (cross-over, straight-through, E1) and both didn't work but surprisingly, they do on the other RAD modem that comes to the same PBX.
| Quote: |
Once you get that sorted another catch maybe timing. You will need to take E1 timing from one or other of the Telco's, with one as the primary source. If they for some reason aren't synced you will get errors every so often
|
Thanks for the pointers.
I am going to keep trying several things and if I get a break through, I'll definitely share the results.
For no, any more help is welcome.
thanks! |
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