UAS errors

[tonyw1]

Hi, does anyone know what UAS errors are?

These are my modem stats which look quite good except for the UAS. Is that 35 seconds down time?

Would these stats be regarded as normal?

============================================================================
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
G.Vector: Disable
Traffic Type: PTM Mode
Link Uptime: 1 day: 22 hours: 26 minutes
============================================================================
VDSL Port Details Upstream Downstream
Line Rate: 19.999 Mbps 77.393 Mbps
Actual Net Data Rate: 20.000 Mbps 77.394 Mbps
Trellis Coding: ON ON
SNR Margin: 9.1 dB 3.5 dB
Actual Delay: 0 ms 0 ms
Transmit Power: 6.7 dBm 12.8 dBm
Receive Power: -11.6 dBm -3.4 dBm
Actual INP: 47.0 symbols 52.0 symbols
Total Attenuation: 18.3 dB 16.2 dB
Attainable Net Data Rate: 25.222 Mbps 79.851 Mbps
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 6.8 20.5 29.8 N/A 9.8 21.9 31.5
Signal Attenuation(dB): 6.8 19.9 28.8 N/A 13.0 21.8 31.5
SNR Margin(dB): 8.9 9.1 9.1 N/A 3.5 3.5 3.5
Transmit Power(dBm):- 5.2 -23.2 6.4 N/A 9.1 7.8 7.0
============================================================================

VDSL Counters

Downstream Upstream
Since Link time = 26 min 1 sec
FEC: 29375636 74371
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FailedRetr: 0
Latest 15 minutes time = 11 min 37 sec
FEC: 1274 53
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FailedRetr: 0
Previous 15 minutes time = 15 min 0 sec
FEC: 1535 30
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: N/A
HostInitRetr: N/A
FailedRetr: N/A
Latest 1 day time = 22 hours 26 min 37 sec
FEC: 8765373 37843
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FailedRetr: 0
Previous 1 day time = 24 hours 0 sec
FEC: 20610263 36528
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 35 35
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FailedRetr: 0
Total time = 1 days 22 hours 26 min 37 sec
FEC: 29375636 74371
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 35 35
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FailedRetr: 0
============================================================================

[licquorice]

UAS is unavailable seconds, ie down. You just had a 35 second line break, but otherwise stats look really good.

[tonyw1]

Thanks, so the modem looks good, (Zyxel DSL modem/router).

I have an Ipv6 problem with the Zyxel, but I can use it in bridge mode to feed into the WAN port of a FTTP Smart Hub 2 which should sort out the Ipv6 issue and having an external modem should stop BT telling the SH2 to reboot..... hopefully.

[licquorice]

Yes, modem looks fine. All Smart Hub 2s with the latest firmware are now capable of configuring LAN port 4 as a WAN port, you don't need the specific red port FTTP version any longer.

[tonyw1]

Now that's something that tech support didn't tell me. I'll power it up and take a look.

[licquorice]

[tonyw1]

Yup, I have the latest firmware, SH2 rebooting now in FTTP mode.

[licquorice]

It works, I've tried it with an HG612 modem.

Unfortunately having a modem won't stop BT re-booting the hub if they feel the need though.

[tonyw1]

Even if it's not a BT modem?

Someone did say on another thread that he stopped getting the reboots when he got FTTP.

Maybe I'll have to ditch BT after all, my contract ends in 2 weeks and the reboots are doing my head in.

[licquorice]

Any modem will be transparent to any commands sent to the hub. Can you not just use the Zyxel as a modem/ router and bin the hub.