DSL Model - RJ11 connector and CAT5e cable

May 19, 2018
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Dear Community members,

Am trying to connect my DSL modem via a longer CAT5e cable with RJ11 connectors on both ends (distribution box and DSL modem ) and having some issues. Found a workaround, but wanted to see if anybody has seen this before and can throw some light.

Modem - Virgin Mobile DSL, they call the modem by a pet name "Steve" - am guessing it is bell modem rebranded.

Using a standard flat telephone cable with RJ11 connectors from Distribution to DSL modem - no issues and all is well.

Now when I uses a CAT5e cable (branded Honeywell with RJ11 on both ends ) - I cannot get the model to work or login to the ISP. The Pinout wiring from the CAT5e to RJ11 is standard aka - I use only 2 strands (blue / white blue) in the pins 3 and 4 of RJ 11. After the crimping - I have checked for continuity etc and the cable is perfect. I use a simple telephone cable and it works !! am stumped.

Last night, I was frustrated and just took the solid blue and solid green strands of the CAT5e and crimped to 3 and 4 of the RJ11 and voila it works ! This is really strange.

My conclusion is for some reason the DSL model does not like stranded pairs (read blue and white blue) but it is okay with a unstranded pair (aka flat dollar store telephone cable or the blue / green strand from CAT5e).

Anybody out there can explain or seen this behaviour in the past ?
 
Solution
Unfortunately to really test a cable you need a testing meter than most us normal people can not justify the cost. The cheap meters just test continuity. It can be as simple as one of the pins did not contact the wire well enough.

In general it works perfectly fine using the blue/blue-white pair. That is the most commonly used pairs for telephone/dsl

Can't explain this just unlucky I suspect.

Since keystone jacks are now sold in almost every home improvement store I generally recommend those to people with little experience making cables. They are almost fool proof since you do 1 wire at a time and nothing can slip at the last second. You can then use short commercial cables to plug into the equipment.

....as a...
Unfortunately to really test a cable you need a testing meter than most us normal people can not justify the cost. The cheap meters just test continuity. It can be as simple as one of the pins did not contact the wire well enough.

In general it works perfectly fine using the blue/blue-white pair. That is the most commonly used pairs for telephone/dsl

Can't explain this just unlucky I suspect.

Since keystone jacks are now sold in almost every home improvement store I generally recommend those to people with little experience making cables. They are almost fool proof since you do 1 wire at a time and nothing can slip at the last second. You can then use short commercial cables to plug into the equipment.

....as a note I hope you are not actually using "stranded" cable as opposed to solid copper cable. It take different ends that are not as common as the ones used on sold cable.
 
Solution

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