Displaying 20 results from an estimated 2000 matches similar to: "Shielding of T1/E1 cables WAS RE: Pinouts for T1/E1 crossover cable WAS "RE: what cable to connect a legacy PBX to a TE410P ?""
2006 Apr 24
0
Shielding of T1/E1 cables WAS RE: Pinouts for T1/E1 crossover cable WAS "RE: what cable to connect a legacy PBX to a TE410P ?"
My telco used cat5 as well for the demarc to CPE. It's also with noting that
many channel banks, such as my Atlas, and zapata.conf itself also have
parameters to allow you to tune the gains to compensate for cable signal
loss. I've never had to touch them, and my CPE is about 300 feet from the
PRI demarc (with an ordinary Cat5 cable connecting them)
2006 Apr 24
1
Pinouts for T1/E1 crossover cable WAS "RE: what cable to connect a legacy PBX to a TE410P ?"
At Sangoma we do quite a lot of back-to back T1 and E1
connections. T1 is not a very fussy connection, as the baud
rate is only about 750 kbps.
In our experience, for error free communications you can use
the following rules of thumb:
Up to 50 ft: Flat patch cable
Up to 500 ft: Ordinary twisted telephone cable Cat 5 may be
overkill unless you are going hundreds of feet.
David Yat Sin
2006 Apr 24
0
Shielding of T1/E1 cables WAS RE: Pinouts for T1/E1 crossovercable WAS "RE: what cable to connect a legacy PBX to aTE410P ?"
>>
>>Good thing he doesn't work for a cable manufacturer as that's
>>a total crock of crap that even an inexperienced person
>>should be able to detect. (You can't twist two wires to make
>>them weight three times as much, or cost three times as much.)
He may have started out as an underground lineman, posibly inhaling too
much swamp gas and CO from
2006 Apr 22
4
Pinouts for T1/E1 crossover cable WAS "RE: what cable to connect a legacy PBX to a TE410P ?"
Can't anyone stop self-promotion and tell the poor guy what he needs.
A T1/E1 X-over cable using an RJ-45 (8-cond.) is pinned out as follows:
1 - 4
2 - 5
3 - NU
4 - 1
5 - 2
6 - NU
7 - NU
8 - NU
NU = Not Used
I have not in my experience seen any problems with using a Good Quality
Cat5 vs. Cat 3 (telco standard) cable for X-connects. YMMV, but you
should be fine. As far as the shielding
2006 Apr 22
0
Pinouts for T1/E1 crossover cable WAS "RE: whatcable to connect a legacy PBX to a TE410P ?"
I for one think it is a great idea to buy a book with hard earned money and wait a few days to a week just to get an answer to a question that is freely available on the internet immediately.
Hard pressed to think of anything in the "book" that is not on with wiki with more up to date and useful information.
-----Original Message-----
From: Alexander Lopez
2006 Apr 22
1
Pinouts for T1/E1 crossover cable WAS "RE: whatcable to connect a legacy PBX to a TE410P ?"
The "telco guys" probably did something non-industry standard and reversed send and receive in the jack that they plugged the CAT5 into. Sure it works, sure it is easier, sure it is not the correct way of doing things.
Thanks,
Steve
________________________________
From: asterisk-users-bounces@lists.digium.com on behalf of Lacy Moore - Aspendora
Sent: Sat 4/22/2006 2:55 PM
To: Paul
2006 Apr 22
0
Pinouts for T1/E1 crossover cable WAS "RE: whatcable to connect a legacy PBX to a TE410P ?"
I have used cross-connect wire from the spool to make T1 crossover cables with RJ45 ends. All that matters is that pin one goes to four and two goes to five on both ends.
________________________________
From: asterisk-users-bounces@lists.digium.com on behalf of Andrew
Sent: Sat 4/22/2006 2:51 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: Pinouts for T1/E1
2006 Apr 22
1
Pinouts for T1/E1 crossover cable WAS "RE: whatcable to connect a legacy PBX to a TE410P ?"
I agree. I haven't had a problem using CAT-5, even for long runs, however it's not a real T-Carrier cable and I didn't know how old the PBX is.
Paul
>I have not in my experience seen any problems with using a Good Quality
>Cat5 vs. Cat 3 (telco standard) cable for X-connects. YMMV, but you
>should be fine. As far as the shielding goes, I use UTP cables and
>Connectors
2006 Apr 24
0
Pinouts for T1/E1 crossover cable WAS "RE: whatcable to connect a legacy PBX to a TE410P ?"
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-
> bounces@lists.digium.com] On Behalf Of Kevin P. Fleming
> Sent: Monday, April 24, 2006 12:14 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: Pinouts for T1/E1 crossover cable WAS "RE:
[Asterisk-Users]
> whatcable to connect a legacy PBX to
2006 Apr 24
1
Re: Shielding of T1/E1 cables WAS RE: Pinoutsfor T1/E1 crossover
> Unless you're going for some kind of distance record, standard Cat5
will
> work
> without any issue on any modern installation. As I said, I'm pretty
sure
> (not 100%, but close) that the T1 specification is only Cat3, since
it's
> standard BellCore wire and they don't run your T1 loops (which aren't
T1
> anymore, they're DS1 over HDSL or HDSL2) in
2006 Apr 22
0
Pinouts for T1/E1 crossover cable WAS "RE: whatcable to connect a legacy PBX to a TE410P ?"
I tend to use the soft sell. Looks like I Just self-promoted :-)
-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of John
Novack
Sent: Saturday, April 22, 2006 12:05 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: Pinouts for T1/E1 crossover cable WAS "RE: [Asterisk-Users]
2006 Apr 24
1
Re: Shielding of T1/E1 cables WAS RE: Pinoutsfor T1/E1 crossover
> I've never bothered to check to see if cat5 cables use the appropriate
> mating twisted pairs or not. Since the pinouts are different for cat5
vs
> T1 cables, I'd have to guess a single strand is used from two
different
> twisted pair groups. That wouldn't be cool, but in short runs it
> probably doesn't have much of an impact.
>
IIRC, standard Ethernet uses
2006 Apr 24
1
Re: Shielding of T1/E1 cables WAS RE: PinoutsforT1/E1 crossover
> Close. 10/100mbps Ethernet uses wires 1,2,3,6 but that is pair 2 & 3.
> Pair
> one is the pair up the dead center (pins 4&5), pair 2 is pins 1&2,
pair 3
> is
> 3&6 and pair 4 is 7&8. A T1 uses pairs 1&2, which is why you can't
use a
> regular crossover cable for a T1 crossover, but you can use a regular
> ethernet patch cable as a T1 patch
2006 Apr 24
1
Re: Shielding of T1/E1 cables WAS RE: Pinoutsfor T1/E1 crossover
> Ever looked at the underground cable in the street outside your
> building? If it's more than 20 years old, it's probably
paper-insulated
> gel-filled cable, with an _extremely_ thin amount of insulation
between
> the conductors and _zero_ insulation between the pairs. T1s seem to
work
> just fine on it, unless it's very old or they try to put more than 6-8
> spans
2007 Mar 18
6
T1 cable for Digium T1/E1 Cards
Is there any technical difference between a T1 cable and a cat5e patch
cable as far as using them with Digium T1/E1 cards? Can PRI circuits
terminating at a smart jack connect successfully to Digium cards using
straight through CAT5e cables? If so, are they using all of the pins in
the cable?
Thanks in advance
2007 Nov 18
1
p2p t1 with sangoma hw
Hi all, i am trying to setup my first t1 in asterisk, i have been using
asterisk for several years but ahve never needed a t1 line before. I
have a sangoma card already in the server with 4fxo ports. Now i
ordered two single port t1 line cards from sangoma for the two servers i
am connecting with the point 2 point t1. I am currently at the location
trying to set things up but have some
2007 Oct 26
4
Need T1 crossover cable?
I'm connecting a T1 PCI card to a Nortel Option 61 switch T1 card. My
Sangoma A102D shipped with 2 T1 cables - which I assume are straight
through. Do I need to make crossover cables for this scenario?
Thanks
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2003 May 27
8
[OF] Cable Pinouts
Hi,
Digium's E400P has RJ45 conector and my E1 link has BNC concetor. Could someone tell me the cable pinouts to make this conection?
thanks
Eduardo
2011 Jan 22
4
Crossover cable for E1 ?
I'm looking to connect a BMC 450 to an asterisk with a Digium Quad E1 card.
Am I right in thinking that I'll need a special 'crossover-E1' RJ45 cable?
If so, any clues where I might buy one in the UK? The Digium card sellers don't seem to
stock such a thing.
Thanks.
Tim.
Tim Panton - Web/VoIP consultant and implementor
www.westhawk.co.uk
2005 Mar 14
4
E1/T1 back to back ??
Hi there
Just a quick question, I will be building some servers in a lab utilizing
Digium E1 cards. I would like if possible to avoid the expense of installing
an e1/ISDN30 in my lab. I have two questions really, first does anybody know
of an effective simulation tool I can use to replicate a real world PRI but
without the telco line being installed. And secondly, can I have a scenario
with 2