asterisk users - May 2005 - Is there a product to simulate a PRI trunk?

Does anyone know of a way to simulate the signaling of a PRI trunk for 
testing/setup purposes? I realize this may be a rather naive question, 
but I was wondering if you could take a TE110, for example, and using a 
crossover cable (or not?) and some means of emulating the NI2 signaling 
protocol connect it to another TE110 on another machine to test and 
verify an installation before the telco comes out to provision our new 
trunks.

Regards,
/rg

Rob,
That should work.....without a crossover though....
If you have an extra card and machine to dedicate for that purpose that
should suffice.
In theory it should work....i  have been tempted to try it but
haven't....
let me know the outcome if you do try it.
Thanks!!
Spondon




-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Robert
Goodyear
Sent: Friday, May 13, 2005 2:06 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Is there a product to simulate a PRI trunk?


Does anyone know of a way to simulate the signaling of a PRI trunk for 
testing/setup purposes? I realize this may be a rather naive question, 
but I was wondering if you could take a TE110, for example, and using a 
crossover cable (or not?) and some means of emulating the NI2 signaling 
protocol connect it to another TE110 on another machine to test and 
verify an installation before the telco comes out to provision our new 
trunks.

Regards,
/rg

_______________________________________________
Asterisk-Users mailing list
Asterisk-Users@lists.digium.com
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users

That is incorrect, you need a crossover cable to go directly between two
T1 jacks if the Telco isn't in the middle. A T1/E1 crossover cable swaps
pins 1&2 with 4&5.

For PRI, configure one end as pri_net, and the other end as pri_cpe.

Works just fine. Lots and lots of folks do this. Channel banks, legacy
phone systems, multiple asterisk systems, modem servers.

Dey, Spondon, ALABS wrote:
> Rob,
> That should work.....without a crossover though....
> If you have an extra card and machine to dedicate for that purpose
> that should suffice. 
> In theory it should work....i  have been tempted to try it but
> haven't.... 
> let me know the outcome if you do try it.
> Thanks!!
> Spondon
> 
> 
> 
> 
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com
> [mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Robert
> Goodyear 
> Sent: Friday, May 13, 2005 2:06 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: [Asterisk-Users] Is there a product to simulate a PRI trunk?
> 
> 
> Does anyone know of a way to simulate the signaling of a PRI trunk
> for testing/setup purposes? I realize this may be a rather naive
> question, but I was wondering if you could take a TE110, for example,
> and using a crossover cable (or not?) and some means of emulating the
> NI2 signaling protocol connect it to another TE110 on another machine
> to test and verify an installation before the telco comes out to
> provision our new trunks.

Charlie,
I appreciate the clarification on the cross over..... 
I haven't tried this yet but I do understand that in theory it should
work..... 
Glad to hear confirmation that this does work though.....
Thanks!!
Spondon




-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Charlie
Watts
Sent: Friday, May 13, 2005 2:29 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: RE: [Asterisk-Users] Is there a product to simulate a PRI
trunk?


That is incorrect, you need a crossover cable to go directly between two
T1 jacks if the Telco isn't in the middle. A T1/E1 crossover cable swaps
pins 1&2 with 4&5.

For PRI, configure one end as pri_net, and the other end as pri_cpe.

Works just fine. Lots and lots of folks do this. Channel banks, legacy
phone systems, multiple asterisk systems, modem servers.

Dey, Spondon, ALABS wrote:
> Rob,
> That should work.....without a crossover though....
> If you have an extra card and machine to dedicate for that purpose
> that should suffice. 
> In theory it should work....i  have been tempted to try it but
> haven't.... 
> let me know the outcome if you do try it.
> Thanks!!
> Spondon
> 
> 
> 
> 
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com
> [mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Robert
> Goodyear 
> Sent: Friday, May 13, 2005 2:06 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: [Asterisk-Users] Is there a product to simulate a PRI trunk?
> 
> 
> Does anyone know of a way to simulate the signaling of a PRI trunk
> for testing/setup purposes? I realize this may be a rather naive
> question, but I was wondering if you could take a TE110, for example,
> and using a crossover cable (or not?) and some means of emulating the
> NI2 signaling protocol connect it to another TE110 on another machine
> to test and verify an installation before the telco comes out to
> provision our new trunks.      
_______________________________________________
Asterisk-Users mailing list
Asterisk-Users@lists.digium.com
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users

Robert Goodyear wrote:
> On May 13, 2005, at 12:39 PM, Chris A. Icide wrote:
> 
>> You should note that while this "works" technically, it
won't catch
>> any issues that you may experience when connecting to other PRI
>> switches. 
>> 
>> In other words, two asterisk servers connected back to back with a T1
>> cross-over cable won't tell you that Asterisk's NFAS code
doesn't
>> work with Lucent 5ESS switches, or that Sangoma's code pre-firmware
>> v1.1 and pre-driver beta6 versions won't bring up the D channels
when
>> connected with certain switches.  Everything will work between two
>> asterisk boxes perfectly. 
>> 
> 
> Right. Which is why I wanted to figure out if there was a way to
> emulate the particular signaling protocol; in my instance, NI2, to
> ensure I'm doing all the right things on my end based on what I tell
> the simulated telco end to impersonate.
You aren't "emulating" a particular signalling protocol,
you're actually
using it. If you plug two *'s back to back, and are configured for NI2,
you can do a "pri debug span foo" and watch it talking PRI.

But what he said: There are interoperability issues. That's not the same
thing. And NI2 is probably the most common protocol out there - a single
T1 to a carrier, using NI2, is about as likely to work as anything.

Robert,
For more protocol focussed testing you can chack out the T-berd product
line:
http://www.acterna.com/global/products/descriptions/TB-224/index.html
You may know this already but I will pass it on in the spirit of sharing
information....
They have other models ....the product link above is probably decent for
what you are looking for.....
Thanks!!
Spondon




-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Robert
Goodyear
Sent: Friday, May 13, 2005 4:01 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Is there a product to simulate a PRI
trunk?



On May 13, 2005, at 12:39 PM, Chris A. Icide wrote:
> You should note that while this "works" technically, it won't
catch
> any issues that you may experience when connecting to other PRI 
> switches.
>
> In other words, two asterisk servers connected back to back with a T1 
> cross-over cable won't tell you that Asterisk's NFAS code
doesn't work
> with Lucent 5ESS switches, or that Sangoma's code pre-firmware v1.1 
> and pre-driver beta6 versions won't bring up the D channels when 
> connected with certain switches.  Everything will work between two 
> asterisk boxes perfectly.
>
Right. Which is why I wanted to figure out if there was a way to 
emulate the particular signaling protocol; in my instance, NI2, to 
ensure I'm doing all the right things on my end based on what I tell 
the simulated telco end to impersonate.

_______________________________________________
Asterisk-Users mailing list
Asterisk-Users@lists.digium.com
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users