1 edit | reply to davidg
Re: High Performance 3300 series For the most part that's true but I once tried the netgear DG834GT and I sync at higher speeds over the 2246N. The modem chipset does effect line condition stats as well.
This was one of the reasons I asked does the 3300 use higher performing processors over the 2200. |
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 tschmidtPremium,MVM
join:2000-11-12
Milford, NH
kudos:4
 ·Fairpoint Commun..
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| said by GoBG:I sync at higher speeds over the 2246N. A lot or a little? What do your line stats look like?
Assuming you are connecting in ADSL2 mode rather then ADSL newer protocol allows finer grain control over low level modem overhead. It is common to see small differences in sync rate.
If prior modem or DSLAM line card only supported ADSL and now both ends support ADSL2 connection will use new spec. It provides slightly better performance over long circuits.
Unless margin is low sync rate should not be affected by modem. Sync rate is set at DSLAM based on service plan ordered.
Router processing power does come into play with high speed connections as NAT requires a lot of housekeeping and large NAT table memory is important for P2P users.
/tom |
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| A little.. nothing game changing as I remember.
I just looked up the CPU on both the 2200 and the 3300 and they're the same. I guess the "High Performance" Netopia/Motorola mention is more to do with software.
I originally tried netgear because my Dslam use broadcom equip which the netgear has a broadcom chipset. I read its good to have matching equip with your ISP. Netopia/Motorola uses Texas Instruments. But their new 7000 series uses broadcom, its VDSL though.
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tranle
join:2001-06-10
Mountain View, CA | said by GoBG:A little.. nothing game changing as I remember. I just looked up the CPU on both the 2200 and the 3300 and they're the same. I guess the "High Performance" Netopia/Motorola mention is more to do with software. ... It has to be more that just software because I am currently using a firmware for the 2247NWG-VGx on my 3347NWG-VGx. Just because the newer version has dsl line statistics entries that the older version did not have. |
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| said by tranle:said by GoBG:A little.. nothing game changing as I remember. I just looked up the CPU on both the 2200 and the 3300 and they're the same. I guess the "High Performance" Netopia/Motorola mention is more to do with software. ... It has to be more that just software because I am currently using a firmware for the 2247NWG-VGx on my 3347NWG-VGx. Just because the newer version has dsl line statistics entries that the older version did not have. Is that safe? To swap different series firmware like that? Would it work on the 2246N-VGx?
So the firmware in the 2247NWG is more up to date than 3347NWG? |
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tranle
join:2001-06-10
Mountain View, CA | said by GoBG:Is that safe? To swap different series firmware like that? Would it work on the 2246N-VGx? So the firmware in the 2247NWG is more up to date than 3347NWG? I have been using the nta774r1.bin in my 3347NWGvx since around 02/08/2008. It does somehow check that it is compatible with your hardware, because I did try a firmware that was not an ntaXXX.bin and it would not take it.
I had reported some bug on nta760r4.bin but netopia never bother putting out a new version on their website. |
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2 edits | said by tranle:I have been using the nta774r1.bin in my 3347NWGvx since around 02/08/2008. It does somehow check that it is compatible with your hardware, because I did try a firmware that was not an ntaXXX.bin and it would not take it. I had reported some bug on nta760r4.bin but netopia never bother putting out a new version on their website. nta774r1.bin is the 2246N-VGx current firmware as well.
What's your SNR Margin are like? |
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tranle
join:2001-06-10
Mountain View, CA | said by GoBG:nta774r1.bin is the 2246N-VGx current firmware as well. What's your SNR Margin are like? This is what I have on my 6000/768 dsl line. That firmware also tell how far it think I am from the co.
Downstream Upstream
---------- ----------
SNR Margin: 11.50 13.00 dB
Line Attenuation: 28.00 20.00 dB
Output Power: 13.92 11.90 dBm
...
Estimated loop length: 6504 feet (bridge tap)
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4 edits | Here's my stats on the 2246N-VGx with the same 774r1 firmware.
3000/800 DSL line.
Downstream Upstream
---------- ----------
SNR Margin: 30.00 11.80 dB
Line Attenuation: 29.80 16.70 dB
Output Power: 19.14 12.29 dBm
...
Estimated loop length: 7446 feet (bridge tap)
Post your stats davidg.
One thing I notice is the netgear broadcom modem I tested had upstream SNR margin at 16db. This tells me the broadcom chipset handles line noise better.
But the 3347 does have broadcom switch integrated with Texas Instruments chipset..»wiki.openwrt.org/Hardware/Netopia
Perhaps this is the reason for the higher upstream you posted, tranle. I don't believe the 2246N-VGx has the integrated broadcom switch. |
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| reply to tranle
Here's my stats from my newly acquired 3347-02-1006L
Downstream Upstream
---------- ----------
SNR Margin: 28.50 14.40 dB
Line Attenuation: 33.00 16.00 dB
Output Power: 19.60 12.29 dB
...
Estimated loop length: 7446 feet (bridge tap)
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 davidgGood Bye My FriendPremium,MVM
join:2002-06-15
none | reply to GoBG
i had to put my 3547 back online. for some reason teh 3347 keeps locking up every night and requires a HARD restart to correct. i ain't got time to play with it right now, so i am just using the 3547 until i get time to see what the problem is. the 3547 is getting slightly slower thruput due to teh reduced SNR, but i can deal with it for now.
--
Lack of Preparation on YOUR Part does NOT Constitute an Emergency on Mine! |
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2 edits | The 3347 I have is fine so far... but I hate seeing the word "interleave" on my stats,  even though I don't believe i'm on it do to my first hop stats.
You won't believe what I went through to get fastpath from my small telco. It took over a year and a call to the ceo.
The 3347 does have better upstream SNR numbers than my old 2246. Decision Decisions Decisions
If only I could flash the 3347 with a Vgx firmware.. I think that would solve it. The bellsouth firmware what's causing this I bet. |
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4 edits | reply to GoBG
All three Netopia modems I tried back to back.
said by GoBG:Here's my stats on the 2246N-VGx with the same 774r1 firmware. 3000/800 DSL line.
Downstream Upstream
---------- ----------
SNR Margin: 30.00 11.80 dB
Line Attenuation: 29.80 16.70 dB
Output Power: 19.14 12.29 dBm
...
Estimated loop length: 7446 feet (bridge tap)
said by GoBG:Here's my stats from my newly acquired 3347-02-1006L
Downstream Upstream
---------- ----------
SNR Margin: 28.50 14.40 dB
Line Attenuation: 33.00 16.00 dB
Output Power: 19.60 12.29 dB
...
Estimated loop length: 7446 feet (bridge tap)
Here the stats on the 3347nwg-006
ADSL Line State: Up
ADSL Startup Attempts: 3
ADSL Modulation: ADSL2+
ADSL Data Path: Fast
CO vendor: BDCM
Power Management State L0
Datapump Version: DSP 7.2.3.0, HAL 7.2.1.0
Downstream Upstream
---------- ----------
SNR Margin: 28.00 15.50 dB
Line Attenuation: 30.60 16.50 dB
Output Power: 18.45 12.26 dBm
Errored Seconds: 0 0
Loss of Signal: 0 0
Loss of Frame: 0 0
CRC Errors: 0 0
Data Rate: 3627 943
atucRevisionNum 2 ATU-C Vendor ID BDCM
TrainedPath Fast TrainedMode ADSL2+
us Interlv delay 0 ds Interlv delay 0
Estimated loop length: 8094 feet (bridge tap)
I see the 3347nwg-006 added a few feet to my loop length.
Since its the same hardware..(minus the bellsouth firmware) the stats are pretty much the same.
What we learn?
The 3300 series with the integrated broadcom chip has better upstream s/n margins than the 2200 series |
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