Question dsl & phone signals over same wiring - Verizon

wpshooter

Golden Member
Mar 9, 2004
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Do both Verizon DSL & landline phone signals flow over the same copper wiring coming from their central office to my home ?

If so, then how is it possible for my DSL to be working just hunkey-dory (as witnessed by my ability to post this question on this forum) while my landline telephone has no dial tone and I can neither send nor receive telephone calls ? It has always been my understand that both DSL & phone signals share/run over the same wiring, so what could be blocking ONLY the phone signal ? If the wiring was physically broken at some point, seems to me that I would have use of neither DSL or the phone.

Thanks.
 

JackMDS

Elite Member
Super Moderator
Oct 25, 1999
29,545
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Beside the copper per-se there are other factors on both Verizon Center, or and aspects of the cables and DSL filters when it comes into your place.

So... call Verizon first.

:cool:
 

Muadib

Lifer
May 30, 2000
18,120
910
126
Do both Verizon DSL & landline phone signals flow over the same copper wiring coming from their central office to my home ?

If so, then how is it possible for my DSL to be working just hunkey-dory (as witnessed by my ability to post this question on this forum) while my landline telephone has no dial tone and I can neither send nor receive telephone calls ? It has always been my understand that both DSL & phone signals share/run over the same wiring, so what could be blocking ONLY the phone signal ? If the wiring was physically broken at some point, seems to me that I would have use of neither DSL or the phone.

Thanks.
Back when I had dsl, you needed a filter plugged into the phone jack, then the telephone plugs into the filter.
 

wpshooter

Golden Member
Mar 9, 2004
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No longer necessary, if you have them route DSL to a single jack and route telephone signal to another separate jack.

But both DSL and telephone signal are combined until they come into residence, so it looks like if wire was broken outside of the house junction/wiring box, then you would receive NEITHER dsl or telephone service.

Asked Verizon "customer service" person about this but they were of zero help. Suppose I will have to just wait for the field technician, if he ever decides to show up !!!
 
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mxnerd

Diamond Member
Jul 6, 2007
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You just have to wait for Verizon field tech.

Voice and DSL use different frequencies and are not suppose to interfere each other.

ADSL_Spectrum.jpg
 

wpshooter

Golden Member
Mar 9, 2004
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He said it was a squirrel problem. He had bitten into the line. As to why the DSL was still working even though the telephone was not, he says (if I understood correctly) that actually the wires have multiple strands and even though the phone strand was severed and also one of the DSL strands, the DSL was able to still function over the unsevered strand.
 

VirtualLarry

No Lifer
Aug 25, 2001
56,571
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By the explanation given, it sounds like your DSL line was on the second "pair" of a standard 4-wire telco cable, as a "Dry loop", while your telco voice was on the primary pair.
 

wpshooter

Golden Member
Mar 9, 2004
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Can you give a more detailed explanation of "dry loop" ?
I am familiar with that terms as the name that Verizon uses for a service that they used to offer (but no longer offer) which allowed the Verizon customer to have only dsl and not have to have and pay for any landline phone service. Is the "dry loop", just basically saying that the phone strands had no signal "dry" on them ?
 

VirtualLarry

No Lifer
Aug 25, 2001
56,571
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Yeah, the DSL may have been on a pair with no associated Dial Tone on it, and your Voice Line telco pair might have been on the other pair in the cable, and maybe the squirrel only got one of the pairs.