Displaying 20 results from an estimated 1000 matches similar to: "Shielding of T1/E1 cables WAS RE: Pinouts for T1/E1 crossovercable WAS "RE: what cable to connect a legacy PBX to aTE410P ?""
2006 Apr 24
1
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 ?"
I was once told by a lineman that the cables they use didn't have that
many twists in them because it wasn't needed, and that the extra twists
would effectively use more cable and thus cost and weigh more than
triple what they do now. He told me that with the number of twists in
the Cat 5 cable it would cancel out any interference, but he also stated
that the effective length was
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 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
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
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 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 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
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 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
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 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 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 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
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
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
2008 Dec 20
2
HP/Compaq T700H UPS cable pinout
Hello all,
I have obtained a Compaq T700 H UPS sans-cable. My research indicates it
would've come with a HP #201092-001 cable, and from previous posts on
this list, it speaks upscode2, possibly being a rebadged Eaton unit.
Any suggestions for cable pinouts I can try?
Regards,
Mathew McBride
2007 Sep 24
0
Powercom Black Night 600AP UPS Serial Cable Pinout
Hi there!
I just recently got a nice new UPS to power most of my computer
equipment, and having it working perfectly under NUT. However, I had
a perfectly good Powercom Black Night 600AP UPS, which I'm now
trying to get to power my internet gateway. Unfortuantly, due to
not thinking on my part, I threw away the original serial cable.
I have tried a straight - through cable, and the one
2003 Apr 04
3
AT&T T1 Cable Needed!
Hi,
I just got a T1 interface for a AT&T (became Lucent) System75 (uses same
cards as Definity). I would take a crack at making a cable but can't
determine the pinout for a cable and it is not apparent from the board.
Asking you guys makes sense as one of you may have one of these systems. The
cable has a amphenol male D50 connector on one end and probably a rj45 on
the other. I also
2006 Jan 20
1
2400P Pinouts
Hi,
this is probably a stupid question but can someone point me to where I
can find the pinouts for the connector at the back of the TDM2400P card
from Digium.
I am assuming this is some kind of telecomms standard but I need to
connect to 8 existing analogue lines and therefor need to wire this
connector to a patch panel or R11 jacks.
Also most of the docs do not mention this card - am I
2003 Dec 29
1
E100P pinouts anyone?
Just cross pairs 1-2 and 4-5
1 <--> 4
2 <--> 5
Never done an E1, but I think it's the same for a T1 4 wire cable.
Tim Thompson
Commercial Sales Engineer
http://www.amatechtel.com
(806) 722-2227
-----Original Message-----
From: bam [mailto:bam@cqm.co.uk]
Sent: Monday, December 29, 2003 9:12 AM
To: asterisk-users@lists.digium.com
Subject: [Asterisk-Users] E100P pinouts