It's been my interpretation for quiet some time and haven't had any
repercussions. The "indirectly" is entirely too broad. I think I've used the
music headphones example in the past. I have a set of headphones, that are
electrically connected to my speaker. The speaker to the computer motherboard
and the motherboard to all other systems inside of the computer. Inside the
computer is a modem, the modem is electrically connected to the public
telephone system, and the headphones indirectly connected to the modem so
indirectly connected to the public telephone system. Does that mean my
headphones fall under the RTT & E directive. I don't believe that is the intent
of the standard, and the "indirectly" connected statement is an ill thought out
catch-all phrase.
Gary
-----Original Message-----
From: Joe Finlayson [mailto:jfinlay...@telica.com]
Sent: Tuesday, October 01, 2002 3:15 PM
To: 'Richard Hughes'; 'EMC PSTC'; 'NEBS Newsgroup'; 'TREG Newsgroup'
Subject: RE: RTTE or LVD for Equipment with E1 SELV interface
Richard,
Good point - the "directly or indirectly" part grabbed my attention
but that seems too broad a description which could encompass quite a wide
range of equipment. However, the point of discussion here is whether a
product classified as SELV by IEC 60950, Type 2 by GR-1089, etc. and does
not connect (interface) to the "Public" telecommunications network is
included in the scope of the R&TTE Directive. This type of product resides
in the network and does not connect to outside plant conductors - terminates
to another piece of equipment with the proper isolation to outside plant
conductors. My interpretation is that if there is no provision for physical
connection to the PSTN, the R&TTE does not apply.
Any takers??? I'll copy the TREG and NEBS gurus on this one as well.
Thx,
Joe
-----Original Message-----
From: Richard Hughes [mailto:rehug...@nortelnetworks.com]
Sent: Tuesday, October 01, 2002 5:57 PM
To: 'Joe Finlayson'; "EMC-PSTC (E-mail)" <
Subject: RE: RTTE or LVD for Equipment with E1 SELV interface
Joe,
The R&TTED applies to the following types of equipment:
1) Radio equipment
2) Terminal equipment.
The Directive also contains the following definitions:
'telecommunications terminal equipment' means a product enabling
communication or a relevant component thereof which is intended to be
connected directly or indirectly by any means whatsoever to interfaces of
public telecommunications networks (that is to say, telecommunications
networks used wholly or partly for the provision of publicly available
telecommunications services).
'interface' means
(i) a network termination point, which is a physical connection point at
which a user is provided with access to public telecommunications network,
and/or
(ii) an air interface specifying the radio path between radio equipment
and their technical specifications
It will be seen from the above that the R&TTED is not limited to PSTN since
it is quite possible that a network operator could provide a business with
an E1 interface, for instance.
Peter,
It is for the manufacturer to decide to which market, e.g. terminal
equipment or central office equipment only, they whish to sell their product
into. EN 60950 has nothing to do with it since this standard can be used to
evaluate either type of product - and other non-telecom ICT products as well
of course.
Simplistically, if the product does not have an input or output voltage in
the range 50-1000Vac, 75-1500Vdc then the LVD does not apply {ref. Article 1
of LVD}. Clearly, if the LVD does apply then certain editions of EN 60950
do provide a presumption of conformity with the safety objectives of the
LVD. If the LVD does not apply then that should not be taken as an excuse
to not comply with EN 60950, but that's another debate entirely.
If the R&TTED applies then the EMC is not applied as such, because the EMC
requirements are then covered by the R&TTED. However, this is largely an
administrative technicality because Article 3(1)(b) points to the EMC
Directive for its essential requirements, just as Article 3(1)(a) points to
the LVD for safety (minus any upper or lower voltage limit).
Well, that's enough personal opinions expressed on this matter for me...
Richard Hughes
-----Original Message-----
From: Joe Finlayson [ mailto:jfinlay...@telica.com
<mailto:jfinlay...@telica.com> ]
Sent: 01 October 2002 17:52
To: "EMC-PSTC (E-mail)" <
Subject: RE: RTTE or LVD for Equipment with E1 SELV interface
Peter,
As this product does not connect to the PSTN and is destined for the
Central Office only, I would say the R&TTE Directive does not apply as the
scope does not include Network Equipment.
Thx,
Joe
-----Original Message-----
From: Peter Merguerian [ mailto:pmerguer...@itl.co.il
<mailto:pmerguer...@itl.co.il> ]
Sent: Tuesday, October 01, 2002 9:33 AM
To: "EMC-PSTC (E-mail)" <
Subject: RTTE or LVD for Equipment with E1 SELV interface
Dear All,
For an equipment where the E1 has been assessed for SELV under EN 60
950 (ie for intrabuilding use and not subject to overvoltages), does the
equipment fall under the RTTE Directive or can the manufacturer declare
compliance to the LVD and EMC Directives.
If under the RTTE Directive, what telecom standard applies to the E1
intrabuilding interface?
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