Any
one know how to daisy chain ISDN2E
I
have
one socket going t my exchange
The
other goes t a bridge
I
would link t add a third outlet for my portable which has an ISDN card s
that I can set it up ay home
Any
ideas
thanks
Mike
Sent
from Home
-----Original
Message-----
From: patrickl@xxxxxxx [mailto:patrickl@xxxxxxx]
Sent: Sun 15 Jul 01 21:58
To: ukha_d@xxxxxxxSubject: [ukha_d] Re: internal phone
systems..
The
cybergear gold is a very nice piece of kit for ISDN use. It will
support the delivery of CLI (caller id) t ordinary analogue
handsets, which is unusual. (ISDN exchanges will support
both "ordinary" analogue handsets with the correct adapter, or
digital ISDN handsets which can be extortionately expensive,
and
may
require independent power).
For
conventional
analogue lines, the Olychrom (sp?) is well thought
of. Solwise
(www.solwise.co.uk) also carry a reasonable range. Expect
to
pay
200-300 for a 2+8 configuration (2 exchange lines routed to 8
extensions).
If you use an analogue modem, be
aware that the cheaper PBX's may
limit your maximum connection
speed. I don't know of any 2+8 PBX's
which support CLI,
although
there are 1+4's which do.
If you are adventurous, it's well
worth trawling the second hand
office market for an old PBX -
but
be wary of any which aren't
supplied with full user and
installation documentation. Avoid the BT
Ambassador exchanges,
which are very common on the second hand
market, but only work
with special handsets and are
particularly "clunky" to
use.
In all cases, you will need to star wire your
extensions
(ie home
runs from the point where you install the exchange) -
in
contrast t
the usual daisy chain. When using analogue
handsets
(as opposed to
ISDN), 2 wires are sufficient (pins 2 & 5
on
the BT socket) - but you
will need to fit a master socket t
each
extension t ensure the
handset rings correctly. For details
of
how to wire digital ISDN
handsets, look at Peter Strangman's
home
page
(www.adelheid.demon.co.uk). He also has a useful
comparison
chart t
assist in selecting PBX's and a list of
vendors.
Until recently it used to be a BT requirement t
have
a PBX
maintained by an approved installer. This is no longer
the
case,
although some suppliers may try to brow beat you into
submission.
Finally, you may want t make special provision
for power cuts -
either a handset directly wired to the
exchange
line, or a UPS t
power the exchange. Some (most?) exchanges
will
provide "pass
through" in the case of failure, connecting a
specific extension t
the exchange in the case of
powerloss.
HTH
Patrick
---
In ukha_d@y..., "John McManus" <john.mcmanus@b...>
wrote:
> This would probably most easily be done by a PBX
(private branch
exchange).
> There may well be
ones out there that support normal analogue
exchange
lines
> ... but I only have experience of the ISDN
variety.
>
> The PBX that I have is from
Network Alchemy... it takes 2 ISDN2e
circuits
(4
>
channels) and provides 16 extensions. They also do an entry
model
> (Cybergear Gold) for about £300? that takes an
ISDN2e /
Home
Highway in and
> provides 6 extensions out
(for your normal house phones). With the
> Cybergear
you
can call from one extension t another, transfer
calls,
have
> hunt groups etc. Can also act as a (simple)
ISDN
router. It
provides TAPI
> integration t
the PC desktop, PC based voice mail and lots of
other
stuff.
>
> There are a number of other
systems
that have similar
functionality... but I
>
don't
know much about them.
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http://www.automatedhome.co.uk
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