mattj_uk
Dialled in
Joined 11 years ago
User Profile
User Widgets
Contributions
Video calls dropping, upstream showing 16QAM
Sigh. My Virgin broadband is misbehaving again. This time, it's in the subtle and annoying type of problem. Most things are alright, but I see packet loss, my partner who works from home sees video calls drop entirely, and general slowness. BQM doesn't show much, but the main thing I see is upstream QAM negotiated down. Power levels look OK (DS a little high, but it's cold), and DS errors look broadly OK. Last time this happened, it was a cabinet problem, found after several premises engineers came (and didn't come), insisted on replacing the modem (not the fault) and various other horrendous first line experiences. Can we cut through this Gordian knot and just get someone from Networks to come and look at the cabinet please? Data below. Matt Downstream bonded channels Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID 1 138750000 5.4 38 256 qam 1 2 146750000 5.5 38 256 qam 2 3 154750000 5.4 38 256 qam 3 4 162750000 5.3 38 256 qam 4 5 170750000 5.1 38 256 qam 5 6 178750000 5 38 256 qam 6 7 186750000 4.9 38 256 qam 7 8 194750000 4.9 38 256 qam 8 9 266750000 3.2 38 256 qam 17 10 274750000 3.2 38 256 qam 18 11 282750000 3.5 38 256 qam 19 12 290750000 4 38 256 qam 20 13 298750000 4.6 38 256 qam 21 14 306750000 4.8 38 256 qam 22 15 314750000 5.4 38 256 qam 23 16 322750000 5.6 38 256 qam 24 17 330750000 6 38 256 qam 25 18 338750000 6.4 38 256 qam 26 19 346750000 6.1 38 256 qam 27 20 354750000 6.5 38 256 qam 28 21 362750000 6.8 38 256 qam 29 22 370750000 7 40 256 qam 30 23 378750000 6.6 38 256 qam 31 24 386750000 5.9 38 256 qam 32 Downstream bonded channels Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors 1 Locked 38.6 89 0 2 Locked 38.6 71 0 3 Locked 38.9 55 0 4 Locked 38.6 55 0 5 Locked 38.6 52 0 6 Locked 38.6 57 0 7 Locked 38.6 47 0 8 Locked 38.6 49 0 9 Locked 38.6 371 0 10 Locked 38.6 414 0 11 Locked 38.6 870 0 12 Locked 38.6 491 0 13 Locked 38.6 416 0 14 Locked 38.9 269 0 15 Locked 38.6 305 0 16 Locked 38.9 254 0 17 Locked 38.9 183 0 18 Locked 38.9 141 0 19 Locked 38.9 186 0 20 Locked 38.9 134 0 21 Locked 38.9 113 0 22 Locked 40.3 76 12 23 Locked 38.9 118 0 24 Locked 38.9 114 0 Upstream bonded channels Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID 1 23599976 44.3 5120 32 qam 5 2 36600000 43.8 5120 64 qam 3 3 30100000 44 5120 64 qam 4 4 43100058 44 5120 16 qam 2 5 49600000 44.2 5120 16 qam 1 Upstream bonded channels Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts 1 ATDMA 0 0 15 0 2 ATDMA 0 0 9 0 3 ATDMA 0 0 8 0 4 ATDMA 0 0 5 0 5 ATDMA 0 0 14 0 Network log is completely unremarkable.
