Dick, just to add to what has been said already. We are still waiting for Austel to align with the rest of the world with regards to clause 6.3.3. of IEC 950 / EN60950. This clause is the same as 4.4.2. in EN41003 Both Clauses 4.4.2 and 4.5 are made not applicable by the European ETS300047 for Basic rate access. It is clause 6.3.3. that Dr Mani uses as a base for arguement that there must be supplementary insulation between the network and Earth. He also insists on the 'professional installation option as well as supplementary insulation to prevent the mains plug from being incorrectly wired. I personally think that he is wrong. It is impractical to expect all ISDN Basic rate equipment to be installed by only professional installers and not by the user. My current advice to my company is to provide a supplementary barrier between the ISDN TNV circuit and earthed SELV just to keep the likes of Dr Mani happy. As has already been said, the best course of action is to get a sympathetic lab to provide your report and statement of conformance.
Best regards Barry Singleton Approvals Specialist email:[email protected] Securicor 3net Limited Ringway House Bell Road Daneshill Basingstoke Hants RG24 8FB UK Tel: 44 (0)1256 792174 ------------- Original Text From: [email protected] (Dick Shultz), on 25/10/96 16:22: Fellow TREGers, Does anyone have recent experience with the isolation requirements for a BRI T interface in Australia? There were a lot of opinions expressed on the subject in January but nobody identified a hard decision by AUSTEL. Thanks, Dick Shultz
