sundance-communications.com/forum Forums VOIP Phones & IP PBX Networking DSL Wiring and DSL Data Signal not seen by Modem

I am having to restructure the cabling layout for one of my clients. The problem I am having is with the DSL. It begins in the downstairs phone closet runs from the demarcation point to a 66 block then goes upstairs to a second 66 block where it runs to a DSL splitter.

I tried to follow the previous working installation since we were just moving the location of the cabling but I cannot seem to get the DSL signal to work. I get dial tone at the 1st floor 66 block and all the way to the DSL SPLITTER but I cannot seem to get the DSL signal once at the SPLITTER.

WHAT AM I DOING WRONG ?????

I have created a diagram of the layout which you can see here
https://www.datalogistix.net/cabling/dsl_layout.jpg


I can also if necessary run a single cable from the downstairs 1st floor 66 block direct to the DSL splitter. The total run will be about 150 feet.

AT&T DSL is just one pair correct?

Also I know the Cayman Modem works as we had this setup in place and working prior to the wiring relocation.

Again I repeat I get dial tone at the DSL Splitter but can't seem to get any Data Signal. Yes, I can back tone the cable and it tones out to the locations I am using. I can even from the DSL Splitter connect to the voice terminals and get Dial Tone and make calls out.

So again why am I not able to get any signal to the Data Terminals. I have also tried this same cable layout minus the DSL Outdoor Splitter and instead used a smaller ZBlocker splitter which b basically does the same thing, but still I get no Data Signal but can get Voice and Dial Tone.

The pair bringing the voice should also be bringing the Network and Data signal should it not.

Please Advise.

Thanks

Yes, the DSL signal is "piggy backed" so to speak on the pair with dial tone.

Have you tried to connect the modem directly to the line without a filter?

Also, to make sure the modem is still functioning properly connect it directly to the line at the dmarc.
If the modem is ok and you have DSL at the demarc I would run a new cable to the desired location because there may be connections spliced onto the pair somewhere in the building on the old cable.

Also, the customer may be on the very edge of the service range. I have seen the telco sell DSL to customers that really were not in range.

Question: I notice you only show pins on the lower half of each 66 block. Is the top portion several rows of jacks capable of plugging a standard phone cord into?

As Bobby said, try taking the splitter out of the equation and see if you get a connect. Actually, the first thing I'd try is to take a laptop and the modem to the demarc and see if you even have DSL signal there. Can you hear the DSL signal on the line if you hook up at the demarc?

In your diagram, it appears that the connection you make at the demarc might be modular. If it is, are you sure you are plugged into the data port, and not the voice port?

What kind of DSL modem?
Check the wiring on the original jack, Some of the older modems, such as the Alcatel Speed Touch units used the second pair (pins 2/5) for the DSL signal.
The solution is a custom cable, with 3/4 swapped to 5/2 on one end. This will allow the modem+cable to be replaced with a new unit without rewiring. make sure to label the cable.

That sounds familiar. I believe I ran into a Cayman DSL modem once that required connection of the dial tone to the 2nd pair.

Those modems are pretty old but I've seen that too with the Alcatel modems