Turned interleaving ON now my line is dropping all over the place

[eksodos]

I requested ADSL24 turn on Interleaving on my primary line last Friday. The line has been suffering from disconnects every 2-5 days resulting in differing speeds.

I was under the impression that turning Interleaving on would improve line stability. But ever since Interleaving went on this afternoon the line has been dropping every 10-60 minutes with drastically different speeds between 2000 kbps and 4000 kbps. It just can't maintain a stable connection.

Why would Interleaving have this effect?

I was expecting the profile speed might drop a bit. But surely the line shouldn't start dropping all over the place to the point where the connection is pretty much useless. (I've had to re-try five times to post this message due to line drops)

I'm also getting a ton of errors reported:

FEC Errors (Up/Down): 66 / 63,122
CRC Errors (Up/Down): 66 / 402
HEC Errors (Up/Down): 55 / 346

The router was rebooted 15 minutes ago. (The line has dropped twice since)

It's a Speedtouch 585v7.

Any ideas?

[eksodos]

Here are the line stats btw:

Output Power (Up/Down) [dBm]: 12.5 / 13.5
Line Attenuation (Up/Down) [dB]: 6.0 / 13.0
SN Margin (Up/Down) [dB]: 20.0 / 14.5

I live very close to the exchange. It's about a 2 minute walk from my house.

[eksodos]

Well I've figured out the problem is caused mostly whenever the phone line is used for voice calls.

Just received a call, ADSL dropped, now the line stats have changed dramatically.

Before the call:
Output Power (Up/Down) [dBm]: 12.0 / 13.5
Line Attenuation (Up/Down) [dB]: 6.0 / 12.0
SN Margin (Up/Down) [dB]: 22.0 / 15.5

During the call:
Output Power (Up/Down) [dBm]: 12.0 / 19.5
Line Attenuation (Up/Down) [dB]: 31.5 / 27.0
SN Margin (Up/Down) [dB]: 6.0 / 15.5

---

This is a standard BT phone (not wireless/DECT). Does this potentially point to a problem with the ADSL filter? I've already tried a couple of other filters that were supplied with my Speedtouch 585v7. From what I've read, buying "premium" filters from ADSLnation could make a big difference.

Could turning Interleaving ON have resulted in this type of problem?

[eksodos]

I've tested calling the line multiple times tonight. Every time a call is made to the land line with the ADSL connected, the broadband connection drops out on that line. Also the line stats change remarkably as shown in my previous post.

During voice calls the FEC errors also pile up:
FEC Errors (Up/Down): 80 / 15,779
CRC Errors (Up/Down): 80 / 192
HEC Errors (Up/Down): 55 / 129

When the call is terminated and the line reconnects for ADSL the FEC errors remain much lower:
FEC Errors (Up/Down): 14 / 843
CRC Errors (Up/Down): 14 / 39
HEC Errors (Up/Down): 10 / 20

It also doesn't matter whether a phone is connected to the line or not. As long as the number is dialed, the ADSL line disconnects within 10 seconds. I've also tried three different filters. No other devices connected and the line still drops out.

[smartybones]

make sure there is a filter on EVERY telephone.....

[eksodos]

Everything is filtered correctly. :)

Removing the face plate downstairs and directly connecting the ADSL line to it overcomes the problem. It doesn't disconnect on receiving incoming calls. However, all the cabling connected at this point is BT fitted as we have two lines running from the one box upstairs. I've also tested two different routers. So I think it's time to lodge a fault with BT about this. The fault probably lies somewhere from the box downstairs and the second line cabling they fitted that runs upstairs.

BTW in taking the faceplate off tonight I noticed dirt and ants crawling around among the cables.

[starlight22]

Hi,

I had a similar problem while I was with Be*.

Every time the landline phone was answered, the router dropped the line and re-synced itsself.

I was advised to change the filters, cables then even the router.

Be* eventually logged the problem with Openreach, who then tested & replaced the line from my house to the nearest telegraph pole.

This completely resolved the problem for me.