Originally Posted by Hilts

Hi all

I am recently hav ing the same issues. My connection has been sound for the last 7 years, but suddenly as of last week, i started getting dropouts, mainly happening in the evening or when the PC is under immense networking pressure.

Engineer came round and from the data on the modem signal site, my upstream was at 59.5dBmv on a 255 NTL modem (live in the Herts area). We changed all the F's (used to install for NTL myself), the splitter i have and Isolater. He believes the CAB might be at fault, as it is putting out around 47-49dBmv and calculated a .9dBmv loss per 10 metres of cable. The cable trip from cab to my house is about 60m away.

I am running through a router and my NIC is outdated not to say the least.
I shall post my results in a later thread, i'm also going to bypass the router and run direct, and also check via my onboard NIC if the results are different. Finally to outrule any cable defectiveness, i shall run a patch lead from the Omni box outside straight to my router and see if i get varying results. The modem is only 4 months old and should not really present any issues.

With the changes made yesterday, my upstream level is around 53.5dBmv (after removing the splitter) now which SHOULD be ok, however, i was still getting dropouts last night and find it quite frustrating when gaming. Just to confirm, i also tested this with the modem on and PC off and still got dropouts in the evening.

The engineer reported a lot of modem faults lately and suspects either heat issues or a major networking issue affect either a MAC address range or certains CABS or proxy locations?

I'll keep you posted, but would like some feedback once i post results found from my modem.

Many thanks

Originally Posted by Hilts

OK all- did some tests this morning at around 9.15-9.45 am

the results are:

CURRENT SETUP with ROUTER(nothing changed)
Cable Modem Information
Cable Modem : DOCSIS 1.0/1.1/2.0 Compliant
Boot Code Version : 3.1.6d
Software Version : 2.94.1014
Hardware Version : 1.19

Downstream Lock : Locked
Downstream Channel Id : 4
Downstream Frequency : 402750000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : 6.1 dBmV
Downstream SNR : 43.5 dB

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 29200000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 53.0 dBmV
Upstream Mini-Slot Size : 2

WITHOUT ROUTER without USING PATCH CABLE direct to OMNI
Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 25800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 52.0 dBmV
Upstream Mini-Slot Size : 2

WITHOUT ROUTER with USING PATCH CABLE
Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 25800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 52.5 dBmV
Upstream Mini-Slot Size : 2

ROUTER using ON BOARD NIC(regular setup)
Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 25800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 53.5 dBmV
Upstream Mini-Slot Size : 2

SPEED TEST on latest configuration:
Tue, 13 May 2008 08:43:05 UTC

Test 1: 1024K took 453 ms = 2260.5 KB/sec, approx 18627 Kbps, 18.19 Mbps
Test 2: 1024K took 454 ms = 2255.5 KB/sec, approx 18585 Kbps, 18.15 Mbps
Test 3: 1024K took 437 ms = 2343.2 KB/sec, approx 19308 Kbps, 18.86 Mbps
Test 4: 2048K took 828 ms = 2473.4 KB/sec, approx 20381 Kbps, 19.9 Mbps

Overall Average Speed = approx 19225 Kbps, 18.77 Mbps