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For questions about network cable installations used in a physical building or as used in a computer network topology. This tag is suitable when your question is about network cable installations, that are used in buildings to distribution frames and data centers or long distance cabling that is buried into the ground.

7
votes
If you have a fiber scope (you really should, to check if connections are clean) the core size (but not OM level) is obvious by inspection, especially if you look at a known connector and then the unk …
answered Jul 28 '15 by Ecnerwal
6
votes
- but I can go there on the cabling I have, when I can afford to. In my opinion, any multimode fiber should be considered as a short-term purchase with the progression of data rates. Just ask anyone with …
answered Aug 8 '13 by Ecnerwal
3
votes
With LX optics, you can connect two units with a short patch cord and expect them to work fine. With ZX optics, you will need an attenuator if you are not connected to a long section of fiber. If the …
answered Aug 8 '13 by Ecnerwal
5
votes
If you have OM2 in the walls, it makes no difference, and if you have a mixture of OM2/3/4 in the walls, it's probably a good idea to use (only) patch cords that match the highest grade fiber in the w …
answered Jun 11 '15 by Ecnerwal
3
votes
Encode the telephone signal, assign it to a VLAN, send it across with the rest of the data, as data, pick off the VLAN, decode the signal. Any other route is madness. (If doing POTS at all. VoIP obvio …
answered Mar 27 '16 by Ecnerwal
0
votes
It's all obsolete, in the current era. Which means whatever you are reading is obsolete. Anything less than 1000Mb/s is ancient history. Fortunately for folks with antique equipment still running, my …
answered Jun 9 '16 by Ecnerwal
4
votes
In my personal experience "interference from power lines" is more of a marketing myth than reality with twisted pair cable, which is actually highly resistant to interference pickup, by design. But …
answered Jun 8 '16 by Ecnerwal