Gentlefolk,
Today I helped someone who had discovered that his new TalkTalk broadband would work in the test socket but not otherwise.
(Edit to add speed)
I did the usual of removing ring wires and a length of redundant cable and hey presto we obtained a connection of sorts with a download throughput of only 1749 kbps and which is illustrated below.
I also tried the 17070 test to discover that the line number identification is all that is available so it's impossible to check for a quiet line or test the ringback.
As there were quite a few CRC and HEC errors, I browsed through the Huawei HG520b modem / router's web interface (192.168.1.1 admin admin) and came across an ATM loop-back test in their diagnostics page which fails whenever it is tested.
I then rang the TalkTalk help line to find out what was wrong.
I was asked what ATM was so I explained what I was doing.
I was then asked whether there was a connection to which I said yes and was then told I had a line of over 5 km (probably nearer to 4 km actually) and that the speed was dependent on line distance so that was all that mattered.
After speaking to the level 2 supervisor I was told that the ATM loop-back test was not enabled in the exchange.
I.e. TalkTalk have the very minimum of diagnostics at their disposal.
I was also told that TalkTalk are upgrading their exchange equipment but there were no details for THCN.
The engineer rang back as promised to say they had tried to increase the speed but to no avail.
It was a perfectly polite conversation but rather lacking in support capabilities.
Kind regards,
Walter
Product Name EchoLife HG520b
Physical Address xx:xx:xx:xx:9d:b2
Software Release v2.08
Firmware Release 3.10.21.0-1.0.7.0
Batch Number RTC10P0.028.310210
Release Date 2009/10/17
ADSL Description
ADSL State Show Time
Data Path Interleaved
Operation Mode G.dmt
Bandwidth Down/Up(kbps) 2656 / 544
SNR Margin Down/Up(dB) 5.5 / 7.0
Attenuation Down/Up(dB) 63.5 / 31.5
Power Down/Up(dBm) 17.0 / 12.5
CRC Down/Up 10 / 50
FEC Down/Up 48522 / 117
HEC Down/Up 109 / 27
System Up Time 0:53:26
DSL Up Time 0:51:38
PVC Select PVC-0
PPP Up Time 0:51:37
relative capacity occupation: 111%
noise margin downstream: 6.0 db
output power upstream: 12.5 dbm
attenuation downstream: 63.5 db
relative capacity occupation: 97%
noise margin upstream: 7.0 db
output power downstream: 17.0 dbm
attenuation upstream: 31.5 db
carrier load: number of bits per symbol(tone)
tone 0- 31: 00 00 00 02 46 88 99 9a aa 99 88 87 76 66 65 43
tone 32- 63: 04 56 89 aa bb ab bb 7b bc bb bb ab bb aa bb ab
tone 64- 95: 0b aa aa aa aa aa aa aa 99 88 88 88 88 88 88 87
tone 96-127: 88 88 87 77 77 76 54 55 65 55 55 54 44 20 22 22
tone 128-159: 00 02 20 22 02 22 02 22 02 00 20 00 00 00 00 00
tone 160-191: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 192-223: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 224-255: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
