Thinking of moving to Be*, is my modem/router up to it?

MT- said:
(I shouldn't hijack the poor guys thread, sorry!)



Did you get the same synch speed? The DG834GT was one of the routers I tried with Be, it gave me synch speeds 2-3 Mbps lower than the BeBox. The advantage the BeBox has (or so I was told) is that it was specifically chosen to work well with Be's DSLAMs. That might be apocryphal.
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Well it's kind of relevant-ish.

Are you sure it was the GT? I had lower synchs when I tried a G v2 once which uses a different chipset. The GT's use the same chipset as the Speedtouch's (Broadcom BCM6348) but I got better synch by about 1.5-2Mb/s down and 200-300Kb/s up (Annex M) than the 780WL/585v6 and complete stability when the Speedtouch's would be a bit flakey.
 
Dup said:
1212094918.jpg


That's the stats screen. Looks good to me :D
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I HATE YOU!!!! :mad:;)

you got fantastic line attenuation at both way, you'll deffo get FULL bethere Pro package (24mb/2.5mb) easily :mad:

how far away from your exchange?
 
Aekeron said:
How so? If anything, ADSL2 is closer to ADSL1 than it is to ADSL2+ I'd have thought.
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ADSL2 has SRA and all the other improvements (power management, bonding, better diagnostics) that ADSL2+ has. The only real difference is ADSL2+ goes up to 2.2Mhz whereas ADSL2 goes to 1.1Mhz.
 
Not in terms of line speed/stability (which is the context I got the impression they were using). ADSL1 is capable of 12mbits, as is ADSL2. And both use the same frequencies. Certainly comparable.

Obviously, download speeds are generally limited to ~8mbit for ADSL1 connections in the UK but this doesn't mean that ADSL1 performance isn't indicative of ADSL2 performance.
 
is there any way that i can check line noise and attenuation on my line? i've got a Belkin router
 
tolien said:
They're not identical, and it's not just a "phony cap" that separates ADSL2 and ADSL. ADSL2 and ADSL2+ are more closely related.
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ADSL1 (G.992.1) uses the frequency range 138-1100 kHz for upstream, and packs 8 Mbps in that range.
ADSL2 (G.992.3) uses the frequency range 138-1100 kHz for upstream, and packs 12 Mbps in that range.
ADSL2+ (G.992.5) uses the frequency range 138-2200 kHz for upstream, and packs 24 Mbps in that range.

All of the above use DMT modulation.

2/2+ might be more similar in terms of features and protocols, but quite clearly, G.992.1 is limited compared to G.992.3, whilst they use the same bandwidth. G.992.5 uses roughly twice the bandwidth of G.992.1/3, so

Clearly, since they use the same bandwidth, ADSL1 and ADSL2 performance would be closely related, where as ADSL2+ performance is dependant upon the attenuation of your line in the range 1.1-2.2 MHz, which can only be guesstimated from attenuation from ADSL1.

The gain from G.992.1/3 to G.992.5 would be your maximum 100% of your G.992.3 synch, plus an additional percentage again, dependent upon how much of the 1.1-2.2 MHz range is attenuated. The attenuation reported for your line is not a constant; rather it varies according to what frequency block (cell) of bandwidth you are looking at. Attenuation increases with increasing frequency, so higher frequency cells are attenuated more than lower frequency cells, which is why its only an additonal percentage.

So yeah, you want to talk technical, I'm down with that :), but from a layman's point of view, ADSL1 is very similar to ADSL2 in terms of performance, which is the main metric used these days.
 
Aod said:
is there any way that i can check line noise and attenuation on my line? i've got a Belkin router
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How do I change my gearbox? I've got a Ford.

Seriously, find us your model, most routers will tell you somehow, its just the somehow is usually different. I'd be confident I could find out for you though.
 
Clearly, since they use the same bandwidth, ADSL1 and ADSL2 performance would be closely related
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That doesn't mean you can draw the conclusion that ADSL's subject to a "phony cap" though.
I mean, you can squeeze 15Mbps out of ADSL with some jiggerypokery and an exceptionally clean copper pair, but it doesn't mean you'd want to.

MT- said:
from a layman's point of view, ADSL1 is very similar to ADSL2 in terms of performance, which is the main metric used these days.
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From a layman's point of view on a long enough line ADSL = ADSL2 = ADSL2+. It doesn't mean it's true.

It's not really worth splitting hairs about ADSL2 performance: no one actually uses it, so it doesn't really matter what you get.
If you want to compare performance though, you should be able to get more from ADSL2 and remain stable because SRA will let you push the line harder before it breaks. Most people care about the speed they can get without their modem dropping every 5 minutes, so SRA (and the diagnostics that go with ADSL2/2+ that I've mentioned) becomes a whole lot more relevant.

The attenuation reported for your line is not a constant; rather it varies according to what frequency block (cell) of bandwidth you are looking at. Attenuation increases with increasing frequency, so higher frequency cells are attenuated more than lower frequency cells, which is why its only an additonal percentage.
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Now you're really preaching to the choir.
 
MT- said:
How do I change my gearbox? I've got a Ford.

Seriously, find us your model, most routers will tell you somehow, its just the somehow is usually different. I'd be confident I could find out for you though.
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Belkin F5D7632-4
it does not reveal any such information in ANY of the menus or submenus.
 
Woohoo! Connected!

Just plugged in the BeBox (Thomson 585v7) and away I go.

It's taken me 15 mins to get used to the interface, not as intuitive as my Netgear but so far so good. Forwarded my uTorrent port and ran it. Had a torrent running at <20kbps for weeks, now it's running at 200+. Excellent start.

Here are the line stats:

Uptime: 0 days, 0:27:12
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 1,291 / 21,484
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 12.0 / 19.0
Line Attenuation (Up/Down) [dB]: 4.5 / 11.0
SN Margin (Up/Down) [dB]: 7.0 / 7.5
Vendor ID (Local/Remote): TMMB / BDCM
Loss of Framing (Local/Remote): 12 / 0
Loss of Signal (Local/Remote): 1 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 1 / 0
FEC Errors (Up/Down): 0 / 29,760
CRC Errors (Up/Down): 0 / 0
HEC Errors (Up/Down): 116 / 0

Not quite sure what all this means, esp the errors at the bottom but I'm sure the connection needs time to settle?
 
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