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Thread ID: 31272 2003-03-17 04:36:00 Jetstream Woes brig (1359) Press F1
Post ID Timestamp Content User
128782 2003-03-18 01:59:00 Theory is fine as far as it goes but what you actually observe has to be believed. Jim B (153)
128783 2003-03-18 03:23:00 A surge protector is essentially a level limiter AND can be a "fast transient wave" blocker (i.e. a low pass filter)

Some telephone line surge suppressors CAN distort/attenuate the ADSL signal.

Your mileage may vary
godfather (25)
128784 2003-03-18 04:27:00 Too true God, but from Brig's description, this was a power spike protector, not a phone line unit. He clearly stated that he plugged the power pack into it.

If his phone lines are compromised (unbalanced), just moving things around will alter the signal balance on the input to the router, and that could already be very marginal if he doesn't have the correct wiring from the splitter onwards.

IMHO the spike protector aspect is a red herring hiding behind a coincidence, however his mileage is definitely varying at present so something has changed.

Time will tell.

Cheers

Billy 8-{)
Billy T (70)
128785 2003-03-18 05:50:00 Ahh... Perhaps I should have read the post!

Power spike protectors will NOT affect the operation as you say.

Cannot help but wonder why the unit is ever turned off? I leave mine on 24x7

As there is a shortage of IP addresses, I have a greater chance of always having one by never diconnecting. That would not cause the link indicator to not work though .... or would it?

BTW the Alcatel router barely gets warm.
godfather (25)
128786 2003-03-18 06:07:00 I have to say that I'm very grateful to you all for your continuing interest.

Having jumped into this project and found that the water was way deeper than I anticipated, you are like a lifeline, and it's making me feel a whole lot better.

Billy T.......my power adapter has a 12v DC 1.0A output, and is definitely the one that came with the Router.

Yes, there is a serial port connection, but I have no idea what to do with it, nor would I understand any data gathered via it....perhaps later on up the learning curve!

I do have a Line Condition facility in the Router configuration web page. Below is the current data showing and it seems to be updating every 10 secs. Most of this data is gobbledygook, but looks impressive. ;\

VPI and VCI settings are as you say

I will crawl under the house and check that the wiring is as you say it should be...it's what I understood I was paying for- a splitter with a dedicated line to the adsl wall plug.


Something has definitely changed since this time last week. Apart from a short outage yesterday that I described above, everything has run sweetly for 60 hours now and so it's not a good time for any experimentation as to whether any of the changes I reported actually have contributed to the present stability.
I relocated the Router and power adapter so that they are receiving better air circulation than before, so I no longer have the fan on them.


Read out from the Router display:

Line Condition

Protocol
Operation Mode T1.413
ADSL State Showtime

Rate
Downstream 7616 kbps
Upstream 832 kbps

SNR
SNR 14 dB

ATEN
ATEN Downstream 9 dB
ATEN Upstream 7 dB

Loop Distance
Loop Distance 2 K ft.

Near end
FEC 6
CRC 0
HEC 0

Far end
FEC 297
CRC 0
HEC 0

Packet Counter
Transmit Packets 61987
Receive Packets 73306

Cheers
brig (1359)
128787 2003-04-21 22:49:00 This is a follow up to the awful problems I was having getting my new Jetstream connection up and running.

The disconnection problems worsened until I had a complete break for 2 days about 10 days ago, after which I some serious telephoning.

The upshot was that "there is a known problem with the D-Link DSL 500 series Routers and Telecom's gear". The technicalities of the problem are beyond me, but for anyone interested the following thread is revealing!

unixathome.org

After I reinstalled the original firmware and making the "itex command" changes suggested, my jetstream connection was established within minutes and hasn't missed a beat for a week now.

I am starting a new thread for anyone who may be having connection problems with their D-Link Router and might need further information.

In the meantime, thanks to everyone who took the trouble to make the many helpful suggestions

brig
brig (1359)
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