200M : RG41 5: 4 upstream channels

[Sephiroth]

Upstream bonded channels
Channel ID Frequency(Hz) Modulation Power (dBmV) Mode Channel Bandwidth(Hz) Symbol Rate (ksps)
5 46200000 ATDMA 43.3 16 qam 6400000 5120
8 25800000 ATDMA 43.3 16 qam 6400000 5120
7 32600000 ATDMA 43.2 16 qam 6400000 5120
6 39400000 ATDMA 43 16 qam 6400000 5120

Happened yesterday much to my surprise.

Cisco CMTS with 16DS channels.

[heardd05]

congrats seph it begins david

[JordanTheToaster]

Now i want it

[Sephiroth]

I wouldn't mind the 300 meg but they force you to take a stupid phone line. Have you noticed how all the contracts with phone lines are 18 months so that you get milked for something quite useless?

[JordanTheToaster]

Originally Posted by Sephiroth

I wouldn't mind the 300 meg but they force you to take a stupid phone line. Have you noticed how all the contracts with phone lines are 18 months so that you get milked for something quite useless?

Yeah it is stupid but i took the pain of paying more just for the upload and soon more upload.

[Ignitionnet]

Good stuff, although I was expecting to see posts on this last month

There was a firmware issue making this harder on the Arris kit but hopefully that's sorted too and that platform can receive the same treatment.

---------- Post added at 10:09 ---------- Previous post was at 10:08 ----------

Originally Posted by JordanTheToaster

Now i want it

Shouldn't be too much longer before you'll be getting about the same as the VM Ireland customers.

[Gobble]

Originally Posted by Ignitionnet

Good stuff, although I was expecting to see posts on this last month

There was a firmware issue making this harder on the Arris kit but hopefully that's sorted too and that platform can receive the same treatment.

Meanwhile in sunny Leeds on a cBR-8, I'm still only on 8 DS channels on a hub 3, albeit at least with 64QAM on my 2 channels.

[Synthetic]

Just checked mine and I seem to have 1 channel 32 qam and 1 64 qam... they both used to be 64.

Seems a bit weird they're mismatched?

http://i.imgur.com/Czn6mDQ.png

[Gobble]

Might be wrong and we all know I'll be corrected if I am... but I believe that QAM on Upstream steps down to 32/16 when something isn't right... like powel levels possibly?

[Synthetic]

Hmm, as far as I can see they're in spec, DS are 2/3+

[Gobble]

Yeah, I'm not sure on the reason that it does step down, just used power levels as an example. It might be something to do with noise as higher modulation presents more noise, but how you can visualise that from the router GUI I couldn't say.

[heero_yuy]

Originally Posted by Gobble

Yeah, I'm not sure on the reason that it does step down, just used power levels as an example. It might be something to do with noise as higher modulation presents more noise, but how you can visualise that from the router GUI I couldn't say.

Higher modulations require a more noise free channel. If the noise is too great and the error rate commensurately higher then the modulation can step down. In the very worst case it'll drop to QPSK.

As the modulation drops to lower levels the amount of effective power increases and helps the SNR.

[vm_tech]

Originally Posted by JordanTheToaster

Now i want it

You won't be getting 4 upstreams in Bath anytime soon...

[Ignitionnet]

Originally Posted by vm_tech

You won't be getting 4 upstreams in Bath anytime soon...

Bath need an overbuild?

[ccarmock]

LOL New Malden is usually last :-)