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Question of the Day: What's the most interesting small town you've visited in South Africa?
ADSL back 2 back
- Thread starter rone
- Start date
loosecannon
Senior Member
that is not quite how it will work unfortunately ...
i think [might be speaking out my arse now] that you will need atleaset one DSLAM and possibly a BRAS to get it up ... if you are useing straight copper no hybrids... it might work if you are useing ANTU there is not much you can do sorry as that runs over telkoms diginet infrustructure ... you could put a normal NTU on each end and run 64kbs in this case ....
i think [might be speaking out my arse now] that you will need atleaset one DSLAM and possibly a BRAS to get it up ... if you are useing straight copper no hybrids... it might work if you are useing ANTU there is not much you can do sorry as that runs over telkoms diginet infrustructure ... you could put a normal NTU on each end and run 64kbs in this case ....
georgelza
Expert Member
wont work, remember ADSL is made possible by using higer frequencies, telkom has always had frequency based filters on their normal voice lines. The norm use to be they added a frequency filter at the exchange to your line to clean it up from there on, but when you have ADSL they dont do this, they instead use that extra frequency capacity of the line to supply a servic and make extra money since they already basically have the infrastructure laid, (this is part of the gripe people have with telkom, they are double charging for something already paid for). For ADSL to work they use the normal copper from your house to the exchange, at that point they basically take the voice part out and route that via the normal voice segment of the network while the ADSL frequencies gets routerd via other segments... thus the reason for the DSLAM and BRAS etc etc.
G
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G
You Have The Obligation to Inform One Honestly of the risk, And As a Person
You Are Committed to Educate Yourself to the Total Risk In Any Activity!
Once Informed & Totally Aware of the Risk,
Every Fool Has the Right to Kill or Injure Themselves as They See Fit!
It is whoever possible to get 2 lines(adsl) 2 modems and 2, 1 or 2 accounts. Then you setup a box that is going to be your server and get a load balancing program to balance them. It does not give you a theoretical 1 Mbps but with multiple users it sure would haep heaps.
There is no peace without war!!!
There is no peace without war!!!
Sspy
Active Member
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">
To use ADSL technology, place an ADSL modem on the remote end and transmit data signals through the copper pair wire to the local telephone central office, which has its own ADSL modem. The ADSL modems we tested convert the data bits from the source (any computer on your network or other device) to a form suitable to be transmitted over a twisted pair (analog waveform). In the process, redundant parity bits are coded into each sequence of data to ensure safe delivery until it is error-checked and demodulated on the telephone company side.
However, you don't need the telephone company to use ADSL. If your branch offices are across a campus, for instance, you can use a copper pair between those sites. It is possible to place a "remote" ADSL modem on the receiving end, and a "central" ADSL modem at the transmitting end of the connection with nothing but the copper wire in the middle. With a telephone company providing a backbone link, you can connect offices that are located great distances from each other, but are close to their respective telephone carriers' central offices.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
So basicaly this should be possible, if you have a twisted copper pair(outdoor extension or analogue leased line) between the 2 sites directly. ie. <b>It should not pass through an telkom exchange.</b>
If you have a kind enough office or an ISP that is willing to give you an analogue leased line you could use these modems to get a higher speed. These are obviously still subject to distance and line quality and line-coding technique. I am aware of some ISP's in Cape Town doing this with SDSL modems.
To use ADSL technology, place an ADSL modem on the remote end and transmit data signals through the copper pair wire to the local telephone central office, which has its own ADSL modem. The ADSL modems we tested convert the data bits from the source (any computer on your network or other device) to a form suitable to be transmitted over a twisted pair (analog waveform). In the process, redundant parity bits are coded into each sequence of data to ensure safe delivery until it is error-checked and demodulated on the telephone company side.
However, you don't need the telephone company to use ADSL. If your branch offices are across a campus, for instance, you can use a copper pair between those sites. It is possible to place a "remote" ADSL modem on the receiving end, and a "central" ADSL modem at the transmitting end of the connection with nothing but the copper wire in the middle. With a telephone company providing a backbone link, you can connect offices that are located great distances from each other, but are close to their respective telephone carriers' central offices.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
So basicaly this should be possible, if you have a twisted copper pair(outdoor extension or analogue leased line) between the 2 sites directly. ie. <b>It should not pass through an telkom exchange.</b>
If you have a kind enough office or an ISP that is willing to give you an analogue leased line you could use these modems to get a higher speed. These are obviously still subject to distance and line quality and line-coding technique. I am aware of some ISP's in Cape Town doing this with SDSL modems.
loosecannon
Senior Member
the other problem on the analougue serivce is the 2 wires you have at your end goes via a hybrid at the exchange to split it into 4 wires over the telkom network this is a frequancy split and may cause signal problems as already has been mentioned
Karnaugh
Banned
Err, it should work fine there are plenty of docs out there on how to do it.
- Colin Alston
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"Getting traffic shaping right is easy and can be summed up in one word: Dont." -- George Barnett
- Colin Alston
[email protected]
"Getting traffic shaping right is easy and can be summed up in one word: Dont." -- George Barnett