| [connectivity] Equipment Update I do not have a NID and my the second line of my double line drop does not have a suppressor block. The existing single line suppressor is circa 1970 and I believe one of the gas discharge tubes has gone soft. I would like to go to a NID box, but have had little luck getting the phone co. to install one. Phone tech support says they will install an NID for free if I have them out for a service call. But it's on a masonry wall. So, since I can't get a tech to install one, is there someone I can contact at Verizon that would let me pick up an NID and install it myself? |
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 tschmidtPremium,MVM
join:2000-11-12
Milford, NH
kudos:8
 ·G4 Communications
·Fairpoint Commun..
 ·Hollis Hosting
| The NID is phone company property so must be installed by them. They are not going to let you install one. They own responsibility for everything from the CPE terminals out.
One thing you can try is to call stating you want to add phone jacks and need to have a NID installed to isolated inside wiring.
If that fails you could try contacting your state Public Utilities Commission (PUC) and indicate the second line does not run through a surge protector.
Out of curiosity how have you identified you have a gas tube protector and what do you mean by "gone soft?" Does it affect phone service? If this is '70 vintage most likely have a carbon block protector.
/tom |
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| Thank you. I'll try the add lines approach.
I have a phenolic block with three nuts on studs (ground in center, green and red pair on either side of ground) Above the studs for red and green leads there are two screw caps that hold small cartridges in spring contact fingers. I used a current limited programmable power supply in series with a 2 K ohm resistor, a micro-ammeter, and one of the cartridges. One cartridge starts to pass current at about 100 VDC. The other one doesn't show any leakage until I get to 400 vdc. I would think that both would start to conduct at roughly the same voltage. |
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tschmidtPremium,MVM
join:2000-11-12
Milford, NH
kudos:8 Reviews:
·G4 Communications
·Fairpoint Commun..
·Hollis Hosting
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Carbon Protector |
You are correct the trip point should be closer to 400 volts then 100. As long as is is not affecting voice it is probably not degrading DSL. Normal DC voltage on line is -48. To ring the phone the CO superimposes 90v 20Hz AC.
The problem with carbon block protectors is they get noisy over time. If it gets severe enough it unbalances the line, which DSL is very sensitive. If you don't hear anything on your voice line it is probably OK.
Since you have already removed the cartridges temporally to test remove both and see if it affects DSL margin. Be sure to put them back because they provide lightning and surge protection.
/tom |
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| Yes, that's what I have. So those cartridges are carbon filed. Thank you. I already put them back (anything is better than nothing), but was wondering about degraded line protection and any DSL impacts.
I also have a multi-line feed coming into a silver box about 5" x 8" x 2" with a flip out & up cover on a wire bail. It has been unused since I bought the property, and has four wired pairs and a ground lead coming into it. Internally, it seems to be similar to the other block, just more of them. If I cant get an NID installed, could I move the two pair in use onto the unused terminals? |
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