no connection

[norsenoddy]

Hi tried connecting new 8800nl r2 DSL light came on fine internet light came on then it lost it system log
Aug 6 07:20:12 daemon err syslog: pppd:Couldn't create new ppp unit: Inappropriate ioctl for device
Aug 6 07:20:12 daemon notice syslog: pppd:Couldn't reset tty to normal line discipline: Bad file descriptor
any ideas I've set plenty of routers up but never come across this

[norsenoddy]

put old router back and it connected with no problems by the way it's on firmware 2.50a.d11 I've not done any update's

[norsenoddy]

updated firmware reconfigured it and it connected BUT the stats don't look promising after 2 and half hours
xDSL
Mode ADSL_G.dmt
Traffic Type ATM
Status Up
Link Power State L0
Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 15.0 18.0
Attenuation (dB) 56.0 31.5
Output Power (dBm) 17.6 12.4
Attainable Rate (Kbps) 2236 996
Rate (Kbps) 2048 448
K (number of bytes in DMT frame) 65 15
R (number of check bytes in RS code word) 16 16
S (RS code word size in DMT frame) 2.00 2.00
D (interleaver depth) 16 4
Delay (msec) 8.00 8.00
INP (DMT symbol) 0.88 0.13
Super Frames 508224 508224
Super Frame Errors 40388 23713
RS Words 1115285 278349
RS Correctable Errors 4658 0
RS Uncorrectable Errors 105 0
HEC Errors 351 5579
OCD Errors 0 0
LCD Errors 0 0
Total Cells 2693594 0
Data Cells 74463 0
Bit Errors 5290 0
Total ES 797 0
Total SES 598 0
Total UAS 630 32

[billion_fan]

updated firmware reconfigured it and it connected BUT the stats don't look promising after 2 and half hours
xDSL
Mode ADSL_G.dmt
Traffic Type ATM
Status Up
Link Power State L0
Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 15.0 18.0
Attenuation (dB) 56.0 31.5
Output Power (dBm) 17.6 12.4
Attainable Rate (Kbps) 2236 996
Rate (Kbps) 2048 448
K (number of bytes in DMT frame) 65 15
R (number of check bytes in RS code word) 16 16
S (RS code word size in DMT frame) 2.00 2.00
D (interleaver depth) 16 4
Delay (msec) 8.00 8.00
INP (DMT symbol) 0.88 0.13
Super Frames 508224 508224
Super Frame Errors 40388 23713
RS Words 1115285 278349
RS Correctable Errors 4658 0
RS Uncorrectable Errors 105 0
HEC Errors 351 5579
OCD Errors 0 0
LCD Errors 0 0
Total Cells 2693594 0
Data Cells 74463 0
Bit Errors 5290 0
Total ES 797 0
Total SES 598 0
Total UAS 630 32

You can try tweaking the SNR as your SNR downstream is quite high at the moment.

Attached is the SNR table for your device (try 4093 for a target SNR of 6db "-9db drop")

If it starts dropping out try 4096 as the SNR value, drop of 6.5db (target SNR of 8.5db)