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New Problems
Hi All,
About two weeks ago my 50mb service started to play up with random drop-outs (lasting anything from 15mins to a couple of hours) and, rarely, a connection with an unusably slow speed (usually it's either just connected or it's not). When it goes down that blue tick icon on the front panel goes out.
It's very sporadic eg last weekend it stayed up all weekend but last night and today it's been up and down more times than a trampolining rubber yo-yo.
I phoned tech support who asked me to connect to the modem (192.168.1.100) and he asked for a few numbers - these numbers told him there were definite problems on my line. They managed to get an engineer to me the same day who plugged in some test equipment to line (normally where the modem is, ie at the end of the chain) and declared "the signal is too strong" and he went back to the van and "turned down the signal". He was probably here for about 10 minutes in total. It stayed up and stable for about 3-4 hours (and actually seemed much faster than it was before!) before it went down for two hours. When it came back up it was unusable and slow, although it then went down again for a few mins and came back up at a good speed.
Here are the numbers from my modem:
Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 298750000 306750000 314750000 N/A
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y Y/Y/Y Y/Y/Y N/N/N
Channel Id 48 49 50 N/A
Modulation 256QAM 256QAM 256QAM N/A
Symbol Rate
(Msym/sec) 6.952 6.952 6.952 N/A
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 N/A
Power Level
(dBmV) 2.52 2.42 2.68 N/A
RxMER
(dB) 35.25 35.25 35.42 N/A
Correctable
Codewords 547346 964295 828866 N/A
Uncorrectable
Codewords 383 405 380 N/A
Cable Modem Upstream
US-1 US-2 US-3 US-4
Channel Type 1.0 N/A N/A N/A
Channel ID 4 N/A N/A N/A
Frequency
(Hz) 45800000 N/A N/A N/A
Ranging Status Success N/A N/A N/A
Modulation 16QAM N/A N/A N/A
Symbol Rate
(KSym/sec) 2560 N/A N/A N/A
Mini-Slot Size 2 N/A N/A N/A
Power Level
(dBmV) 55.25 N/A N/A N/A
T1 Timeouts 0
T2 Timeouts 0 0 0 0
T3 Timeouts 38 0 0 0
T4 Timeouts 5 0 0 0
It was the "codewords" and "Timeouts" numbers that particularly troubled the person on the phone - the above are with the modem being on for about an hour and has just dropped again (thank goodness for mobile broadband!).
My postcode is DA15 and I'm not sure if this is ex Telewest or NTL as I'm a new cable customer and it's always just been "Virgin". Cable modem is a VMNG300 plugged into a D-Link DIR-615 as supplied by Virgin.
I have another engineer coming tomorrow afternoon - what should I ask him specifically to check and\or test? Is there any clue in the numbers above as to what the problem might be?
Thanks,
Darren
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