Is it possible to raise a network along two cores?

Question

Computer networks

There is a telephone wire in the big building, about 700m long. Is it possible to somehow raise a computer network along this wire? There is also one ADSL modem. If you buy a second one, will you be able to connect them, thereby forming a local network? Or they will not work without automatic telephone exchange?

Answer 1

Once I installed a ZyXEL P-871M between offices, cable TPPep 0.5, ~ 1.5 km, I don’t know the number of switchings along the route, not our department. It rose by about 50 megabits in both directions at the same time, stability - once every 3..4 weeks a call "where is the network?".

Answer 2

DSL - modems must be "different". The client will not want to talk to the client.
Even if you manage to get the connection up (spending a lot of money on balanced modems (SHDSL)), it will be in the most ideal case (straight wire in a shielded cable without twists and sleeves), 15 megabits. Which is unacceptable for comfortable office work.
You are left with options - 7 pieces of ethernet hubs or repeaters, or optics.
You can also run RS485 on this wire (but it is very desirable that the wire be twisted, or better, twisted in the screen), but the speed will be good if 19 kilobits.
Or start up a dialup modem, but the speed will be, ideally, 56 kilobits.

Answer 3

You can, for this you need to use SHDSL modems (2 pcs.)
Wikipedia:

SHDSL (Single-pair High-speed + DSL), G.shdsl, ITU G.991.2 is one of the xDSL technologies that provides symmetrical duplex signal data transmission over a pair of copper conductors. It is mainly used to connect subscribers to the provider's access node (the so-called last mile). The main ideas are taken from HDSL2 technology.
According to the standard, SHDSL technology provides symmetrical duplex data transmission with speeds from 192 Kbps to 2.3 Mbps (in 8 Kbps increments) over one pair of wires, respectively, from 384 kbps to 4.6 Mbps.m . for two couples.
When using TC-PAM128 encoding methods, it became possible to increase the transmission rate to 15.2 Mbps on one pair and up to 30.4 Mbps on two pairs, respectively.

Answer 4

On two cores you can get vdsl one modem master second slave
speed 80 / 20 Mbps will be

Answer 5

Hmmm ... So it won’t work out in a simple way, otherwise I thought I could find a modem and it would work. Then you will have to throw a new cable, but forget about this one ... WiFi will not break through such a layout, if you only install access points on the roof, which may be an option.

Answer 6

On two ADSL modems, this cannot be raised.