Archived from groups: comp.dcom.voice-over-ip (
More info?)
Hi!
> I think I mean an ATA with added features.
Ahh..
> There are basic ATA's about, then there's the Grandstream 486 which can
> provide QoS because it sits between the modem and router and can control
> traffic in its favour, but only has one SIP account.
I *hated* Grandstream's bugetone 101s, which has left me with a bit of a
bad impression of Grandstream in general. Compared to Snom phones
they're junk. I also always thought the Grandstream kit was not
perfectly setup for UK spec phones (might be wrong though?).
> Moving on there's the Sipura 3000, which only has 1 ethernet port for
> connection to a router and therefore does not have QoS, but has multiple
> SIP accounts.
Ah, I see. Understood. Having said that, the Sipura does match UK
phonelines quite nicely (phone line spec wise, it has a very clever
system for impedance matching). It doesn't have two ethernet ports, so,
as you say, cannot QoS, but to be doing traffic management in this way
seems a bit odd to me. I'd far rather use something like a Firebrick
(www.firebrick.co.uk) to do proper (fully controllable) traffic shaping
before the router..
> Then I found the ZyXEL 2000L which has all of these things, but
> apparently isn't available in the UK.
It does look interesting. Having looked in all the usual places I can't
find anybody in the UK that sells it though
Or even anything that
matches its functionlity....
> No-one's come forward yet who's using one of these in the UK, so I'm
> reluctant to make a move without liaison with some-one else.
To be honest, Zyxel haven't impressed me with their Prestige P2000W.
Their UI is nasty and the phone is riddled with issues and problems. It
persistantly runs out of power (due to some issue with the
batteries/power saving) and has never really worked all that well,
sadly. If they can't get something like a SIP phone right (with no
international phone line specifications to deal with) I'd worry about
their general capability in the VoIP arena at the moment.....
> I've been searching on the net to see if there is another ATA with these
> features, but no luck yet.
>
> It is early days yet in the world of VoIP.
Indeed. We've played with a reasonable bag of kit though, and found VoIP
to be very workable and 'business grade'. Having said that, this
situation has only been reached by quite a lot of trial and error... I
think that it has a way to go, yet.
Alex.
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