evilbit
@comcast.net
|  ISDN Outside Wiring Question
Greetings,
I've done a few ISDN installs in the past without much diffulcty. Recently I advised a friend to sign up for AT&T ISDN in his area as that's the only option for a low latency connection where he lives. AT&T did the install, but I've never seen the setup they used on the oustide before and am all kinds of confused.
The installer added the ISDN line to the old TNI box outside and labeled it as I would normally expect. When I open it up I see two poles and the test jack. Exactly what I would have expected. I would think to use these two poles to bring the circuit inside the home.
BUT, they also added a second TNI beath it, connected to the two wires for the ISDN circuit from the top box. When I open up the new second box, I see four what looks like this:
RJ-45 |---- Regular Poles ----|
[ ] ( ) ( ) ( ) ( )
[ ] ( ) ( ) ( ) ( )
[ ] ( ) ( ) ( ) ( )
[ ] ( ) ( ) ( ) ( )
There is a jack in each of the RJ-45 ports with four wires connecting to each pole on the same row as the jack. The wires are black, yellow, red and green.
What the heck is this second box and how do I connect to it? The note the installer left said "Installed and working on total reach box below SR1".
Thanks in advance for any thoughts you may have. |
|
Splitpair
Premium
join:2000-07-29
Cow Towne
 ·T-Mobile US
·T-Mobile US
 ·AT&T Southeast
| said by evilbit :
What the heck is this second box and how do I connect to it? The note the installer left said "Installed and working on total reach box below SR1".
Thanks in advance for any thoughts you may have.
The mention of the Adtran Total Reach and a second box sounds like ISDN provided over the TR. Does the second box look like a NID with an extra deep cover on it? If so that is an outdoor mounting and the Total Reach card is in the cover. The reason many times this is done is the TR system extends ISDN over copper that would not normally support standard basic rate ISDN for a number of reasons. The trick is you must connect to the output of the TR card not to the line in the older NID to make it work.
BTW if it is a TR system don’t meddle with the old NID wiring as it will have 130 + volts of battery on it and that can zap ya good.
Now if the second box is an outdoor mounting then you should have 4 RJ45 type jacks to the left of 4 terminal blocks. The first two are for slot one of the mounting and the second two are for slot two of the mounting.
What matter to you is going to be either the top jack for slot one wired as a RJ45C using pins 1 and 2 R/G as one pair and pins 4 and 5 Y/B as the second pair. If the TR card is in slot one then your ISDN should be on pins 4 and 5 or the yellow black leads.
If the TR card was installed in slot two then you will want to connect to the third jack down from the top same pins 4 and 5 same colors Y/B.
The easiest way to tell if you have the correct pins is look for 48 or so volts of sealing current across the terminals.
There should also be a blue ISDN tag on the correct jack cord with the circuit ID and SPIDS marked on it.
Any questions just ask.
Wayne
--
If you cannot fix it with a buttset and some beanies you ain't a technician. |
|
evilbit
@comcast.net
| reply to evilbit
Wow what a great response. Thanks so much. This describes exactly I saw. No blue tag on the TR box though so I do have a couple questions:
The customer side of the TR box appears to have a top-half and a bottom-half. We only have "rows" in the top-half. The four vertical RJ45-type jacks there each have four terminals to the right of them. In this case, all four RJ45's have wires going to each of their respective terminals. 16 terminals with wires attached to each really threw me when I was looking for two!
So if I understand correctly, I should take the top-most row of four terminals, and wire them up with R/G in pins 1 and 2, and Y/B in terminals 4 and 5, and we'll be all set?
Thanks again. I'll post a picture as soon as I can get one. |
|
ATTek
Got Sand?
join:2000-12-13
Pinon Hills, CA
| Without a picture, I'm going to guess that the enclosure they used at your placed supports more than one kind of card. The yellow/black terminals will not be used since you're dealing with a 2 wire circuit (ISDN). Just connect your startion wire to the red/green posts and you should be set.
--
What does THIS button do..... |
|
evilbit
@comcast.net
| reply to evilbit
Both Boxes | 
TR Box |
You might not be able to see it from this picture, but the color order for each row is Y, B, R, G, if that's significant.
A huge thanks again for all your help. |
|
ATTek
Got Sand?
join:2000-12-13
Pinon Hills, CA
edit:
November 5th, @12:49PM
| Hmmm.....never seen that particular unit. I think the easiest thing may be to test the different pairs until you find one with voltage on it and connect to that. That enclosure does support various types of circuits so the termination won't be too obvious with an ISDN TR card in the lid. I would think he would've tagged the proper termination point for you. 
edit: you're only going to be using pins 1 and 2 in your jack wiring since ISDN is a 2 wire circuit. I suspect you'll find your voltage on the yellow/black studs in that top row so just connect pins 1 and 2 to that.
--
What does THIS button do..... |
|
Splitpair
Premium
join:2000-07-29
Cow Towne
·T-Mobile US
·T-Mobile US
·AT&T Southeast
| reply to evilbit
said by evilbit  : The tech has slot one marked is the ISDN circuit. Try unplugging the top jack in the lower cabinet and plug your router into that jack.
If that doesn't work let me know and I will pull a TR ISDN card out of stock tomorrow and double check the pinsouts in the instructions.
Wayne
--
If you cannot fix it with a buttset and some beanies you ain't a technician. |
|
evilbit
join:2007-11-05
Niles, MI | reply to evilbit
Thanks for offering to do that. I did plug the router directly in to the top (and other 3) jacks on the bottom box and the router never detected an ISDN line. |
|
Splitpair
Premium
join:2000-07-29
Cow Towne | Well it took me forever to find one but it should be the top jack yellow black.
Wayne
--
If you cannot fix it with a buttset and some beanies you ain't a technician. |
|
