I'm trying to conect a new Vigor2820 to our BT Business broadband service.
I can't get it to connect at the BT suggested modulation settings (G.DMT), but I can get it to connect at ADSL2+. However I get lots of RX CRC errs.

Has anyone got the 2820 to work with BT Business and if so could you please let me know the settings ?

Thank you

If you read a couple of posts back you will see a couple of us with this problem, very annoying I have two drayteks on different lines with this issue.

Dave

Thanks for the reply Dave.

I've looked at the other posts, grim reading.

Installed 2820Vn yesterday after regrade to BT Business Option 3 (single fixed IP address).
Very solid sofar, these are the settings used:

Copy and paste from Web Interface:

ADSL2+(G.992.5) SHOWTIME 888000 18923000 6 33

Model Name : Vigor2820Vn
Firmware Version : 3.3.3_232201
Build Date/Time : Oct 23 2009 15:23:15
ADSL Firmware Version : 232201_A Hardware: Annex A

DSL Modem Settings
Multi-PVC Channel 1
VPI 0
VCI 38
Encapsulating Type VC MUX
Protocol PPPoA
Modulation Multimode
WAN Connection Detection Mode ARP
IP Address From ISP Fixed IP Yes No (Dynamic IP)

adsl status

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ATU-R Info (hw: annex A, f/w: annex A)

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Running Mode : ADSL2+(G.992.5) State : SHOWTIM
DS Actual Rate : 18923000 bps US Actual Rate : 888000 bps
DS Attainable Rate : 18748000 bps US Attainable Rate : 888000 bps
DS Path Mode : Interleave US Path Mode : Interleave
DS Interleave Depth : 96 US Interleave Depth : 8
NE Current Attenuation : 33 dB Cur SNR Margin : 5 dB
DS actual PSD : 20. 2 dB US actual PSD : 11. 6 dB
ADSL Firmware Version : 232201_A

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ATU-C Info

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Far Current Attenuation : 16 dB Far SNR Margin : 11 dB
CO ITU Version[0] : 00004946 CO ITU Version[1] : 0000544e
DSLAM CHIPSET VENDOR : < IFTN >

Thanks Eric, thats really handy for comparison.

Out of interest, are you getting any TX or RX CRC errors ?