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In article <>,
Jono <> wrote:
>Hello,
>
>I've a customer who has two premises close to one another.
>
>On each building is a Motorola "Square-ial" supplying a microwave link
>for the two sites' single LAN.
>
>Q1. Is this likely to be a duplex link?

If it's a Canopy system, then yes, it's full duplex as far as it allows.
(I used to work for them) There are 2 basic models though - a fast one
and a slow one. They have E1 adapters for them, (E1 to Ethernet) so if
they can do that sort of stuff, then pure VoIP ought to be a doddle.

>Q2. If Q1 is yes, anyone got any suggestions for getting a phone
>connected in site 2 to site 1's analogue PBX?

Throw away the Analogue PBX in site 1 and install a new hybrid PBX

>for Q2, I was thinking of an SPA3102 at the PBX end and an SPA2102 at
>the remote end; I've never been overly impressed with the SPA3102's
>voice quality WRT PSTN.
>
>Can Grandstreams be connected back-to-back like the SPAs? (see
><http://www.provu.co.uk/pdf/sipura/spa_backtoback_1x_spa3000_and_1x_spa1001.pdf>
>for what I mean)

You can do direct IP dialling on Grandstreams.

>If Grandstreams can, which models should I use?

How much money? They're all about the same in the BT200, through the
GXP2000s .. For a simple phone the BT200 is adequate, but it's display
is digits only. I think it has a "bat phone" mode too, so just lift the
handset and the other one will ring...

Gordon

Jono wrote:
> As I've got spare SLT ports, if I can get a regular DECT connected but
> linked over the microwave, then all the system functions will be
> available that are currently enjoyed on all the analogue extensions.

Why not use the analogue port of a Siemens phone, and also stick in a
DECT repeater?



Tim

Jono wrote:
> The distance may be a bit too great; it wouldnt have to be a Siemens as
> any DECT would do if I could use repeaters.

Siemens phones seem to go further than any other DECT phone I've played
with.

Tim

Jono wrote:
> I've not studied repeater deployment at all - is there a Siemens
> repeater or would you suggest a generic one?

There is a Siemens repeater and a Snom repeater (which we have in
stock). Both work with Siemens phones.

I'll dig out the prices and stuff.

Tim