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lmstearn
Level 5: Eagle Eye

No DSL Signal: Information Requested

Answered

Hi there!

Have two W10 PCs which can be alternately connected to the single landline through a Telstra TG797n v3 Eco Gateway. The ADSL2 is the only comms. used by these two rigs. When disconnecting the modem from one device, it's usual to first disable the network through Network and Sharing Centre, disconnect the modem and connect it to the other machine, powering it on, and then enabling the network through Network and Sharing Centre as before.

3 times out of 4 this process gets an active internet connection on the target machine, but when it doesn't work, the ECO and internet lights stay red on the modem, and the gateway reports no DSL signal.

When referring the matter to a Telstra technician many moons ago, he explained it as the line "hangs" most likely as a consequence of the disconnect sequence. He said that the line should "right itself" as a matter of course, and the duration of downtime should not exceed an hour. The DSL signal may return when lifting a nearby home phone handset, and waiting for the cessation of line noise before the dial tone chimes in. If calling a Telstra help line, the line can also be reset by a technical consultant, but in my prior experience it's no guarantee of insta success.

The information requested is for a more technical explanation of the above phenomena, and what kind of technology, at either the server or client side, would be required to nullify a recurrence of it.

Thanks for reading!

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1 ACCEPTED SOLUTION

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Level 24: Supreme Being
Level 24: Supreme Being
Accepted Solution

Re: No DSL Signal: Information Requested

The DSLAM should automatically reset when it loses the signal from the modem without any prompting from the modem. What they are probably having to do is rebuild the port on the DSLAM with the account configuration profile when the link doesn’t automatically sync after a disconnection.

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5 REPLIES 5
Level 25: The Singularity
Level 25: The Singularity

Re: No DSL Signal: Information Requested

Firstly, I'm not sure why you are going through the rigmarole of disconnecting and reconnecting machines. You can have both plugged in and running if you want, and if you do need to disconnect one before using the other, then all you need to do is unplug the ethernet cable. Nothing else is required, the computer deals with it itself.

 

What you have been doing hasn't needed to be done for over 20 years.

 

As far as the disconnections of the ADSL signal goes, if you are getting noise on the line, then it is more likely a problem with the wiring in your house or externally. It coudl also be a problem with the modem itself as disconnecting and reconnecting ethernet cables shouldn't cause and issue at all. You may also need to replace you DSL filter as sometimes that can cause issues (and they have a finite lifespan).

Never be afraid to back yourself when trying new things, just always make sure you have 3 escape routes if things go wrong.
Level 24: Supreme Being
Level 24: Supreme Being

Re: No DSL Signal: Information Requested

@Jupiter 

The PCs are probably located in two separate rooms that have a phone socket. The modem is being moved between the two rooms. But I agree with you there is probably come faulty wiring or a faulty modem that is causing modem not to resync when moved.

Level 25: The Singularity
Level 25: The Singularity

Re: No DSL Signal: Information Requested

True, but all the mucking about with the Network and Sharing settings is definitely not needed.

Never be afraid to back yourself when trying new things, just always make sure you have 3 escape routes if things go wrong.
lmstearn
Level 5: Eagle Eye

Re: No DSL Signal: Information Requested

They're in two different houses in a rural setting. Here's a speed test.

But this also happened in urban settings (more than twenty years ago) when disconnecting & reconnecting a modem from a device. Sure, the S/W wasn't so good then, but if it was a line problem, it had to be reset at the DSLAM.

Somewhere in Telstra's archives exists a log of the issue as described- all I know is the modem doesn't synchronize presumably because of noise on the line. The actual solution is a port reset, which no doubt the more "intelligent" routers will prompt for!

Crowd Support? What about support for the masses?
Highlighted
Level 24: Supreme Being
Level 24: Supreme Being
Accepted Solution

Re: No DSL Signal: Information Requested

The DSLAM should automatically reset when it loses the signal from the modem without any prompting from the modem. What they are probably having to do is rebuild the port on the DSLAM with the account configuration profile when the link doesn’t automatically sync after a disconnection.

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