Originally posted by Racer X 69 There is a place nearby, not the typical CO, no building. Just a couple concrete pads with large cabinets back off the road far enough to limit exposure to errant drunks. The telco is always there, fiddling around. I suspect it is a stripped down version of the CO. As you mention there is a distance limit.
So I just used Google Earth to measure the distance, and it is about 2.3 miles.
This is a screen grab from Google Earth Street View:
A couple neighbors have the satellite dish internet. I know one for sure is not pleased with the speeds he is getting, and he is really unhappy because he ditched the ADSL for it thinking it would be better. I've looked at the plans available and it doesn't look any better than what I have now.
the box in front is a SAC box...up to 900 pair in/1800 pair out(distribution)
the box in the back is just a splice closure
the small square box could be anything
the squarish box in front looks like a SLC (subscriber loop carrier/digital local service)
it is fed by carrier (at least a T1) so 24 ckts @64kbps per channel /1.544 mbps for 24 channels
the original SLCs carried 96 voice grade ckts...so a SLC96
the output is cable that goes to the SAC box and is then cross connected to the local cables going to the subscribers
tim is correct, line length is everything on copper
which is why fiber is so popular
capacity and speed
not to put too fine a point on it
the SLC box in your photo has up to 900 voice ckts
a single fiber has 28 T!s at 24 ckts each
ADSL is a datastream superimposed on a voice ckt then filtered and separated at the user end
years ago two voice ckts could share a cable pair using a thing called an AML
your phone number will tell you a lot about the eqpt hierarchy
country code...north America is 1
npa......area code...tandem switch
nxx......local exchange or CO...serving office...local switch
xxxx.....last four numbers are assigned randomly unless purchased in blocks
with local number portability that is not as true as it once was
my car dealer moved fifteen miles west of his original location
however he bought a block of numbers from an exchange fifteen miles further west of that
the reason...cachet and perception
I know more about this stuff but I've been trying to forget it for almost twenty years now
Last edited by ccc_; 07-08-2017 at 09:37 AM.