George,
Read a few of the replies and noticed nobody has mentioned to you
the soon to be published CTR 21 / TBR 21.
Europe has accepted that while voice PSTN interfaces need
National attachment approvals, everyone is walking around Europe
with PC modems which appear to work well almost everywhere
without modification of the interface circuits. As a result work
is quite advanced on the development of TBR 21 which is a minimum
set of essential requirements to be met by PSTN non-voice
attachments. Suggest you find yourself a draft and work your
design around the requirements.
However,it is important to recognise that in future TBR's contain
only "Minimal Essential Requirements " as required by Article 4
of the Telecoms Terminal Equipment Directive 91/263/EEC, and that
your design Engineers should not use such documents in the belief
that they will have interoperability with the public network. The
TBR requirements only avoid "HARM / Third party Interference" on
the network. This is where NET.4 is still of great use.
Good Luck
Gordon Anderson
Ascom Timeplex, UK
______________________________ Reply Separator _________________________________
Subject: Telco interface design for wide EU applications
Author: TRGPPR at ALISAMAIL
List-Post: [email protected]
Date: 09/05/96 14:25
From: [email protected]
List-Post: [email protected]
Date: Thu, May 9, 1996 2:25 PM
Subject: Telco interface design for wide EU applications
To: Anderson_Gordon; Weaner_Randy
Author: NAME: Jon D Curtis <SYS30::INTERNET::[email protected]>
Date : 9-MAY-1996 14:25:28.00
> Subject: Telco interface design for wide EU applications
> Message-Id: <E80592310196357C@-SMF->
> Reply-To: [email protected]
> References: <E90592310296357C@-SMF->
>
>
> We are investigating analog telco interface circuits, in particular SLICs,
> with a goal of defining a single or a minimum number of designs which can
> meet the NET 4 requirements of at least the following countries in the EU:
> Germany, UK, France, Italy, Switzerland, Spain. We are currently looking at
> the Mitel MH88600 for these applications. The applications engineer at
> Mitel has indicated that the device can be programmed to required line
> impedance of any EU country but does not have, at this time, information of
> other country-specific telco performance requirements that must be met.
>
> Have any of you been through a similar process and are able to provide
> suggestions as to where to look and how to proceed?
>
> Thank You,
> George Seminsky
>
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