Cable Forum - View Single Post - Superhub What could possibly have gone wrong?

boroboi · 10-07-2012, 01:37

The downstream channels all remain the same, they don't change with resets, but the upstream... i have two channels available and i've tried both, it's exactly the same. Previously there was always one channel which was more congested than the other but now it just makes no difference what so ever. The jitter is mainly caused by the upstream in congested areas, as even ofcom can prove that Virgins downstream is perfectly fine, unfortunately ofcom also gave Virgin Media the title of worst for upstream jitter of any ISP.

As you can see in my last post though, the network upgrades appear to have done their job because the CMTS is actually 100% better than the last time i monitored it, now it doesn't even spike... and since the CMTS is the first point of access between myself and the rest of the VM network, there would appear to be something in the way that is artificially causing jitter on my line, and i'd like to know what that is and get VM to fix it if possible.

Could it be the optical node? is there anything in the cabinet which could be damaged or not working correctly? (the latter i doubt very much but thought id ask anyway)

10-07-2012, 01:37	#7
boroboi cf.geek Join Date: Mar 2005 Location: Middlesbrough [TS10] Age: 39 Services: TT Fibre Large 78mbit Posts: 967	Re: What could possibly have gone wrong? The downstream channels all remain the same, they don't change with resets, but the upstream... i have two channels available and i've tried both, it's exactly the same. Previously there was always one channel which was more congested than the other but now it just makes no difference what so ever. The jitter is mainly caused by the upstream in congested areas, as even ofcom can prove that Virgins downstream is perfectly fine, unfortunately ofcom also gave Virgin Media the title of worst for upstream jitter of any ISP. As you can see in my last post though, the network upgrades appear to have done their job because the CMTS is actually 100% better than the last time i monitored it, now it doesn't even spike... and since the CMTS is the first point of access between myself and the rest of the VM network, there would appear to be something in the way that is artificially causing jitter on my line, and i'd like to know what that is and get VM to fix it if possible. Could it be the optical node? is there anything in the cabinet which could be damaged or not working correctly? (the latter i doubt very much but thought id ask anyway)