 spgGrrrr join:2001-10-31 NOT Texas! | But this is only part of the picture. These are pics of individual coils used for individual lines. The "typical load coil" is grouped with hundreds of others and found for the most part in manholes.
As mentioned earlier, starting at 3kft and at every 6kft after that, they're spliced into the cable. They're cut in in series, i.e., the wire comes into the splice, goes out a cable stub to a "load pot", through the load coil, out the load pot through the stub and back into the spice and out the cable. At each location, there is a waterproof splice closure. And for the most part, the wires inside the splice are all the same colors and have no individual color code identity. So, tone has to be sent, the correct pair entering the splice found, the same pair leaving the splice found, and the load coil cut out and the pair spliced back together. Sounds simple enough, but sometimes the cables are as large as 3600 pairs or more. So it gets a little tricky.
If I can find some, I'll try to post a pic. No flash in the holes, but perhaps a pole mounted one. -- Call Your CLEC after the Earthquake |
 spgGrrrr join:2001-10-31 NOT Texas! | These are small load pots, the larger one for about 100 pair. They look similar in MHs, but usually are larger for for more pair. Sometimes they bury these too.
That's about all there is. You've seen the coils and the way they look in the field. |