DSLAM question

[gee7022]

I got one from work to play around with and was wondering, is see for the input you can use a rj45 cable. Would it be possible to take for instance a 1 meg adsl line connect it to a adsl modem and then connect it to the DSLAM so you can then split the 1 meg ADSL line into 3 or 4 seperate ADSL lines? If not what kind of unit plugs into a DSLAM and in what form is the data being sent to the DSLAM?

[savage]

Hmm, the DSL Modem normally connects to the DSLAM via a single pair (2 wires) CAT3 wire... This is what telkom installs in your home.

The DSLAM normally connects to a BRAS (Broadband Remote Access Server), and this normally happens via ATM, Gigabit Networks, or some form of Fiber Optics.

The RJ45 you see, are more than likely a console port of some sorts. The DSL Ports (where the modems go in), are normally cards that slides into slots on the DSLAM. I don't think you've been given a complete kit to play with ;) Ask them for more goodies!

[gee7022]

Thanks for the reply but the manual says that the rj45 connectors is the input but it supports up to a gigabit connection. There is also 2 fiber optic connectors and the manual says it does automatic switch over between the fiber optic and the rj45 connectors depending on which one is plugged in.

[plenty]

A DSLAM receives data from telkoms ATM network, which is FRAME-RELAY protocol?

There is no such thing as a physical 1Mb line, copper can carry a lot more than 1Mb - but distance, line noise, and general quality of the line effect that max throughput.

For the purposes of your question, you can split all the upstream bandwidth feasible between 4 users in theory.But the DSLAM needs it's upstream from the ATM network, via the fibre or RJ-45 link?

[Nod]

A DSLAM receives data from telkoms ATM network, which is FRAME-RELAY protocol?


Telkom is busy upgrading their ATM backbone to IP. This should in theory give them the capability to increase speeds quite a bit.