125M : Do 100mb Upgrades Need New Cables?

[Ignitionnet]

Originally Posted by Nedkelly

We are upgrading some of the kit in the street for splitting the upstreams at node level

Do you mean the nodes with digital returns Ned that use WDM to split nodes rather than needing physical fibre?

In the case of this area it was a subsplit problem, shiny new 85/1000MHz Motorola kit installed today but bringing its own problems

[Nedkelly]

We have been fitting the Harmonic version of this .Its been put hold at the min as we wait for parts and we help service out

[Ignitionnet]

Good stuff. I'm waiting on my newly overbuilt connection to fall over - they had a lot of issues with the overbuild by the looks and haven't been able to line things up yet

[Nedkelly]

Oh dear so far so good here not had any problems after we set it up .Student areas are the ones we are doing first in Lincoln so we are going from 500home node areas to 250 home node areas .The beauty of this kit it can go down further

[Ignitionnet]

This was an overbuild so loads of kit, not just nodes, were replaced.

Forward power at my modem has increased by 7dBmV, return power dropped by 14dBmV. This will generate some service calls if not lined up tomorrow, but I suspect they were just trying to get people back online, the work overran and there was a much longer period of outage than planned

[Nedkelly]

We got a increase in forward and reverse levels here and had to go round the node adjusing all the amps .sounds like they have had fun in your area

[Ignitionnet]

Downstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power SNR Docsis/EuroDocsis locked
Locked QAM256 41 55616000 Kbits/sec 323000000 Hz 10.0 dBmV 39.4 dB Hybrid
Locked QAM256 38 55616000 Kbits/sec 299000000 Hz 11.0 dBmV 40.5 dB Hybrid
Locked QAM256 39 55616000 Kbits/sec 307000000 Hz 10.9 dBmV 40.1 dB Hybrid
Locked QAM256 40 55616000 Kbits/sec 315000000 Hz 10.5 dBmV 39.8 dB Hybrid

Upstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power
Locked TDMA 2 10240 Kbits/sec 25800000 Hz 34.3 dBmV

Previously downstreams were between 3 and 4dBmV, upstream transmit 48-49dBmV, people on slightly more marginal installs than mine will be struggling given I'm barely within range

[horseman]

Originally Posted by Nopanic

I have the original cables in my street from 1921 and I get 200Mb easy ..

Gee - forgotten all about those Biax 300 Ohm balanced feeds or was that British Traction Company's (eventually Rediffusion) original radio feed experiments via their tram lines?

[Nopanic]

Originally Posted by Ignitionnet

That's pretty impressive given 'modern' coax wasn't invented until 1929 and not used commercially until 1941.

You meant 1981 right? Most areas are still running on the original cable, to clarify where a network is built as a line it's possible that the coaxial line itself may need to be ripped up to allow for replacement of actives. The actual coax itself is usually much of muchness.

http://en.wikipedia.org/wiki/Joke

[Ignitionnet]

Originally Posted by Nopanic

http://en.wikipedia.org/wiki/Joke

It was SO dry I just didn't get it

Perhaps you just needed coaxing to appreciate it?

[Ignitionnet]

Originally Posted by Hugh

Perhaps you just needed coaxing to appreciate it?

Or my sense of humour needs an overbuild.

[Skie]

Someone has been putting the first D into DWDM :p

[Efour]

As a fellow long suffering Romfordian i do hope this work in the area is related to getting my terrible connection upgraded,,,,,,,,,,, Finally woot!!!!!!!!

where abouts did you see it ?

[qasdfdsaq]

Originally Posted by Ignitionnet

Or my sense of humour needs an overbuild.

Hah.