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FireFoxx80 · 17-11-2006, 11:59

Hi there,

First time poster (seems original post was eaten), but this forum seems very informative. Helped me out once already.

Over the last 3 weeks I have had increasing packet loss on my 5+yr old Terayon modem. The only pattern to this was that the packet loss was in proportion to usage (4MB connection). Packet loss was about 8-12%, occurring in chunks rather than intermittent loss.

I saw the sticky about Terayon's and QAM256, so I phoned ntl to report the fault and they sent an engineer around to replace the modem.

So, engineer arrives yesterday to install modem. Swaps the modem out and installs a new ntl250 modem. Whilst he's there, he also says that my signal levels are too high, and could be what's causing the problem; so he also sticks two attenuators/forward pass equalizers on both my ntl250 modem and my digibox. I am not 100% sure of the combination as I only realised the problem this morning. The engineer also went out into the road to fiddle with the box to change something.

This morning I wake up to no net connectivity at all, not sure about digital TV signal, the box was reporting it had a channel at least (not stuck on tune/boot). I check the modem diagnostics and it reports a downstream of about 28dB and an upstream of about 61dB. And although it can lock onto a downstream, it fails on the upstream and goes into a continuous reboot cycle.

Anyway, I phone ntl and they say that my signal levels are now "through the floor". The soonest they can get an engineer out is next Thursday (Saturday as I cant take time off work). The guy on the phone suggests I can try messing with the attenuators, but might not help.

So, any suggestions?

Edit: Sorry mods, as I say, first post eaten (prolly me not seeing preview/post difference this early in morning), made test post to see if acct was/wasn't restricted.

17-11-2006, 11:59	#1
FireFoxx80 Inactive Join Date: Nov 2006 Posts: 5	ntl250, low/high signal levels Hi there, First time poster (seems original post was eaten), but this forum seems very informative. Helped me out once already. Over the last 3 weeks I have had increasing packet loss on my 5+yr old Terayon modem. The only pattern to this was that the packet loss was in proportion to usage (4MB connection). Packet loss was about 8-12%, occurring in chunks rather than intermittent loss. I saw the sticky about Terayon's and QAM256, so I phoned ntl to report the fault and they sent an engineer around to replace the modem. So, engineer arrives yesterday to install modem. Swaps the modem out and installs a new ntl250 modem. Whilst he's there, he also says that my signal levels are too high, and could be what's causing the problem; so he also sticks two attenuators/forward pass equalizers on both my ntl250 modem and my digibox. I am not 100% sure of the combination as I only realised the problem this morning. The engineer also went out into the road to fiddle with the box to change something. This morning I wake up to no net connectivity at all, not sure about digital TV signal, the box was reporting it had a channel at least (not stuck on tune/boot). I check the modem diagnostics and it reports a downstream of about 28dB and an upstream of about 61dB. And although it can lock onto a downstream, it fails on the upstream and goes into a continuous reboot cycle. Anyway, I phone ntl and they say that my signal levels are now "through the floor". The soonest they can get an engineer out is next Thursday (Saturday as I cant take time off work). The guy on the phone suggests I can try messing with the attenuators, but might not help. So, any suggestions? Edit: Sorry mods, as I say, first post eaten (prolly me not seeing preview/post difference this early in morning), made test post to see if acct was/wasn't restricted.