As Derek said lines should be around +/- 48VDC on hook. Under load (off
hook) Typically under +/- 10V DC and Ring 90-110VAC
Quick dirty by all means not a comprehensive lesson on DSL:
http://en.wikipedia.org/wiki/Digital_subscriber_line
Quick dirty by all means not a comprehensive troubleshooting of DSL.
1, Get an extension cord and plug the modem in to the NID (
http://www.dslreports.com/faq/16236) Using a phone cord under 6ft in length
or with the manufacturer provided cable. Some folks really like the 100ft
dollar store cords, if you find this trash it, move the modem.
If the modem works here then the service is good. If it doesn't work here
call the telco.
2. Make sure every answering machine, phone, medical alert device, house
arrest ankle tracker box, water meter box, alarm system has a filter. Some
techs will install a hole house filter in the NID or next to the NID ( a
similar looking grey box, but smaller, with a wire to/from the NID) With
these in place only one jack will work.
3. Make sure if there is 2 ports on the filter that all devices are in the
"phone" side. Make sure the modem is not filtered.
4. If all filtering is proper and you can't get it to work on any existing
jack run your own cable from the NID (cat3 or better)
James Finstrom
Rhino Equipment
http://rhinoequipment.com
Twitter:
http://twitter.com/rhinoequipment
Facebook:
http://facebook.com/RhinoEquipment
ಠ_ಠ **
On Mon, Jul 1, 2013 at 8:30 PM, Derek Trotter <
expat.arizonan@gmail.com>wrote:
> All a meter will tell you is the voltage on the line. That's around 48
> volts when the phone is on hook, 6 when the phone is off hook and 90 when
> it's ringing. The multimeter won't tell you anything about the quality of
> the DSL signal or anything about the DSLAM.
>
> On 07/01/2013 06:31 PM, Michael Havens wrote:
>
> I was having a lady ask me about fixing her dsl. Now.... I'm told that dsl
> sounds like static over a buttset; unfortunately, perhaps that was a few
> years ago because when I test that on my dsl line I hear nothing. So I need
> to ask, how does one test dsl with a multimeter?
> :-)~MIKE~(-:
>
>
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