Ben, Thank you for your input. I tend to agree with you thoughts about safety standard applying however, if that is the case I then ask how in the world you are supposed to comply with these requirements. They are so broad and unrealistic. I mean how in the world is anyone going to be able to confirm the equipment "fails-safe" at all times when absolutely any voltage is applied to the mains terminals (see my point d)).
Apart from this, the ACA state this is not meant to address safety as safety is addressed elsewhere. These requirements are supposed to address other than safety (ie if any of the described events occur they should not result in the equipment harming or damaging the network by improperly interworking with the network. One can only assume therefore this means ISDN signalling ??). You may have guessed by now I have some problems with these requirements !! > Sender: [email protected] > Received: from europe.std.com (europe.std.com [199.172.62.20]) > by hil-img-4.compuserve.com (8.8.6/8.8.6/2.5) with ESMTP id HAA23233; > Wed, 27 Aug 1997 07:33:32 -0400 (EDT) > Received: by europe.std.com (8.7.6/BZS-8-1.0) > id HAA06051; Wed, 27 Aug 1997 07:31:41 -0400 (EDT) > Received: from world.std.com by europe.std.com (8.7.6/BZS-8-1.0) > id HAA06014; Wed, 27 Aug 1997 07:31:37 -0400 (EDT) > Received: from gate-isdn.ktl.co.uk by world.std.com (5.65c/Spike-2.0) > id AA07096; Wed, 27 Aug 1997 07:31:36 -0400 > Received: from 5133.ktl.co.uk [192.168.2.56] > by gate-isdn.ktl.co.uk with smtp (Exim 1.61 #1) > id 0x3gKF-00074R-00; Wed, 27 Aug 1997 12:31:51 +0100 > Comments: Authenticated sender is <bwrigley@[192.168.2.1]> > From: "Ben Wrigley" <[email protected]> > Organization: KTL Approvals Group > To: [email protected] > Date: Wed, 27 Aug 1997 12:31:27 +0000 > Mime-Version: 1.0 > Content-Type: text/plain; charset=US-ASCII > Content-Transfer-Encoding: 7BIT > Subject: Re: ISDN Equipment "Fail-Safe" Requirements > X-Mailer: Pegasus Mail for Windows (v2.40) > Message-Id: <[email protected]> > Sender: [email protected] > Precedence: list > Reply-To: [email protected] > > Kevin > > I'm not aware of any such requirements in the I-CTR3 standards or CTR3. The > majority of the events you list would be covered by testing to a suitable > safety standard (EN60950) for compliance with the Low Voltage Directive anyway. > > Regards > > Ben Wrigley > Senior Approvals Specialist, KTL > > ---------- Original message from Kevin Richardson ---------- > > > Hi all, > > > > I am trying to determine if the EU ISDN standards for basic rate access > > include any "Fail-Safe Operation" requirements and if so, are they in any way > > similar to those required by the Australian ISDN standard TS031. > > > > TS031, clause 5.1.3 on Fail-Safe Operations and in particular clause 5.1.3.1, > > states: > > > > CE shall not cause harm or damage to a PTN if any of the following events, or > > a consequential event, occurs: > > > > a) failure or partial failure of any single mechanical or electrical > > component in the CE; or > > > > b) failure or partial failure of any power supply (including a.c. mains > > voltage and local battery) to the CE; or > > > > c) incorrect manual operation of the CE; or > > > > d) operation of the CE outside the range of operating voltage and > > environmental conditions specified by the manufacturer. > > > > Any feed back would be appreciated. Thank you. > > > > ** Please also Note: > > > > My phone and fax number have changed slightly - ie the area code is now "02" > > instead of "043" and the "43" has been added to the number. See new numbers > > below. > > > > Best regards, > > Kevin Richardson Ph: 02-4329-4070 > > Stanimore Pty Limited Fax: 02-4328-5639 "The > > Technology Requirements Specialists" Int'l: +61-2-432x-xxxx > > Email: Internet: [email protected] Compuserve: 100356,374 > > ------------------------------ > > Ben Wrigley > Senior Approvals Specialist > > KTL > Newlands Science Park > Inglemire Lane > Hull > HU6 7TQ > UK > > Phone: +44 (0)1482 801801 > Fax: +44 (0)1482 801806 > Web: http://www.ktl.co.uk > Email: [email protected] > ** Please Note: I will be out of the office from 1 Sep 97 until 17 Sep 97 attending international standards meetings. I will be checking my mobile phone voice mail messages and office telephone answering machine on a regular basis during this time. Hope this does not cause too much inconvenience. ** Please also Note: My phone and fax number have changed slightly - ie the area code is now "02" instead of "043" and the "43" has been added to the number. See new numbers below. Best regards, Kevin Richardson Ph: 02-43-29-4070 Stanimore Pty Limited Fax: 02-43-28-5639 "The Technology Requirements Specialists" Int'l: +61-2-43-2x-xxxx Email: Internet: [email protected] Compuserve: 100356,374
