Question Help Needed on Adsl2+

[Ramazanpour69]

Hi

We have 2 different line in a building one in Floor 1 and another in Floor 5.

Both line are very powerful. There is active 16mbps Receive and 1mbps send on both.

Download and upload speed are very Good on both lines.
but the Confusive problem is on one of those Lines. Floor 1.

Web surfing in Adsl floor 1 is horrible ! Instagram is very very slow, whatsapp voice/video call is disconnecting every some seconds...
Telegram is very slow ...
But Download and Upload is ok

We have changed all cables. sockets, Changed Three Modems, Changed alot of DNS, changed and optimised MTU .... we decrease and increased Down.and Up speed for getting more SNR quality... Nothing helped us !!!

SNR and Line Attuanation and other Parameters are very very fine ! I'm confuse why adsl line floor 5 is ok but floor 1 is Very bad !!
Both are in on Cabinet and ISP Provider changed all Cable behind me!..

Anybody has any Idea?

Thanks

 

[SamirD]

run packetlosstest.com on both of them. post results.

 

[Ramazanpour69]

Floor 5 with fine quality
but with Internet in floor 1 I cannt open that website !!!

Upload Packet Loss
⬆ 3.4%
(5 / 149)
Total Packet Loss
⬆⬇ 6.7%
(10 / 149)
Download Packet Loss
⬇ 3.5%
(5 / 144)
Late Packets
⏱ 93.3%
(139 / 149)
Average Latency: 266.63ms
Average Jitter: 17.94ms

 

[Ramazanpour69]

This is Floor 1 with Very Bad internet speed:

Upload Packet Loss
⬆ 0.7%
(1 / 149)
Total Packet Loss
⬆⬇ 13.4%
(20 / 149)
Download Packet Loss
⬇ 12.9%
(19 / 147)
Late Packets
⏱ 86.6%
(129 / 149)
Average Latency: 319.60ms
Average Jitter: 40.29ms

 

[SamirD]

So both are bad--they both have some significant packet loss.

Did you run these tests wired?

 

[Ramazanpour69]

There isn't any difference between wifi or wired test...

 

[thecoolnessrune]

What figures are you seeing from your ADSL2+ Modem? Things like CRC Errors? My family had ADSL all the way till about 2018, living way out in the sticks, and it was rated for 1.5Mbps. The performance was nowhere near close. When we checked the modem, we found it was configured in fastpath, and building up a ton of CRC Errors. After troubleshooting with AT&T, they could not get the performance any better, and it was determined to be related to the noise and interference coming down the 2 miles or so of 70 year old copper lines. The decision was made to turn on Interleaved. With that done, CRC Errors plummeted, and while performance was meh (about 900kbps), it at least would work without large amounts of packet loss, and was overall much more useable.

 

[Ramazanpour69]

What figures are you seeing from your ADSL2+ Modem? Things like CRC Errors? My family had ADSL all the way till about 2018, living way out in the sticks, and it was rated for 1.5Mbps. The performance was nowhere near close. When we checked the modem, we found it was configured in fastpath, and building up a ton of CRC Errors. After troubleshooting with AT&T, they could not get the performance any better, and it was determined to be related to the noise and interference coming down the 2 miles or so of 70 year old copper lines. The decision was made to turn on Interleaved. With that done, CRC Errors plummeted, and while performance was meh (about 900kbps), it at least would work without large amounts of packet loss, and was overall much more useable.

on floor 5 Adsl we get alot of crc and hec error but quality is fine.
but on floor 1 Adsl we get very low errors but speed is very slow !!!

we are really confuse about this problem