said by Ernest House:
I am keeping voice on POTS and replacing existing AT&T DSL with U-verse 12MB internet.
My DSL is capped at 3MB speed and my modem could only ever connect at 2.2 at the NID so I am skeptical that a 12MB U-verse self install is going to work smoothly.
Do you know your modem stats? Per the AT&T ToS, they sell a data connect rate, but this includes the ATM encapsulation. So, figuring the encapsulation overhead of ~15%, a modem on the 3.0 Mbps tier will sync at 3008 kbps down, but only deliver ~2500 kbps throughput. So your experience sounds about right.
Knowing the SNR and line attenuation would be helpful for prediction. I used to have, "at&t Yahoo! HSI Pro" (3008/512 profile). With SNR=11.0 dB and attenuation=51.0 dB, that was the highest tier I qualified for. Higher SNR and lower attenuation are better.
BTW, "U-verse HSI" does not use either PPPoE authentication, or ATM. Authentication is 801.1x, and the transport network is PTM. You should get closer to 96% of your modem sync, not the ~85% you currently see. And, without the PPPoE, you should set your MTU to 1500.
My Suttle 694A XDSL splitter is installed at the NID and a CAT5E goes straight from there to where my modem is.
Does the Self Install come with those inline filters for VDSL?
Shall I leave the Suttle installed as-is and just put the VDSL filters on each phone indoors?
AFAIK, that Suttle splitter can remain in place, and you won't need to use the inline filters.
I've had problems in the past where the AT&T modem only supports one computer at a time. Does the U-Verse 2wire HGV3800 modem allow more than one computer?
I am certain that the 2Wire has a four-port router built in. So up to four wired devices (more would require a switch), and up to 253 devices total (mixed wired and wireless).
You must have had a really ancient DSL bridge to hit a one-device limit. Though not supported, any modem subsequent to the SBC-issue Siemens Speedstream 5100B had a routing table, and a Class B subnet (default 192.168/16).
Any gotcha's I should be aware of?
Other than the MTU issue, I can't think of any. And I expect the 2Wire will have the proper MTU out of the box.--
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