[AusNOG] Industrial ADSL2+ Modem/Router

Damien Gardner Jnr rendrag at rendrag.net
Thu Aug 27 14:20:26 EST 2015


The 8817 is good, but it performs horrendously with a noisy line, or if
there is noise on the power supply.  To me 'industrial' says crazy amounts
of RFI, so the 8817 would be the last thing I'd use :\  For example, you
cannot use an 8817 on the same *house block* as a generator.  The 8817
doesn't even need to be plugged into the generator, just having other
devices in the house powered from the generator is enough to stop it
getting line sync.  Hitting transmit on 2m or 70cm from a 5w handheld in
the same room as an 8817 for more than a few seconds is also enough to make
it drop line sync.

I've now gone back to an 877W running in bridge mode after pretty much
losing my mind trying to make an 8817 RFI tolerant ;)


On 27 August 2015 at 14:02, Karl Auer <kauer at biplane.com.au> wrote:

> On Thu, 2015-08-27 at 09:07 +1000, Cameron Murray wrote:
> > I'm chasing recommendations for a reliable industrial adsl2+ Annex M
> modem.
> > I've found plenty overseas however locally resources seem limited.
> > Key features; it must have is a Ping WatchDog and the Ability to disable
> > NAT.
>
> TP-Link TD-8817.
>
> ADSL2+ Annex-M capable router/modem, cones out of the box in bridge
> mode. Runs cool in a well-ventilated plastic case, supports bridge mode,
> NAT can be disabled when routing, and it can be pinged even in bridge
> mode. We've found them very reliable (one dud, but it was that way
> straight out of the box and looked damaged). Sample size is small (tens)
> compared to many on this list.
>
> Not sure it has its own watchdog though. Not sure what would be the
> point...
>
> Nor would I call it industrial, but at $20 or so they very good value.
> One ethernet, one ADSL, one USB. Very decorous small green status lights
> in a black casing with hard feet (no rubber pads to fall off) and
> mounting slots. Only downside is that they have an on/off switch (press
> on, press off), but a dab of araldite solves that problem.
>
> Regards, K.
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Karl Auer (kauer at biplane.com.au)
> http://www.biplane.com.au/kauer
> http://twitter.com/kauer389
>
> GPG fingerprint: 3C41 82BE A9E7 99A1 B931 5AE7 7638 0147 2C3C 2AC4
> Old fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882
>
>
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-- 

Damien Gardner Jnr
VK2TDG. Dip EE. GradIEAust
rendrag at rendrag.net -  http://www.rendrag.net/
--
We rode on the winds of the rising storm,
 We ran to the sounds of thunder.
We danced among the lightning bolts,
 and tore the world asunder
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