Hello Robert, All this below is true.
But "By experience" I know that several ILEC's / PTT's already issued their own requirements for equipment operating on their network, meaning : if you want to sell to them, you have to conform to their requirements otherwise your (or your customers) products will not be approved for sale through their distribution channels. Have a nice day. ______________________________________________________________ Peter Gullberg R&D Manager Todos Data System AB Fiskhamnsgatan 2, S-414 58 GOTHENBURG, SWEDEN Direct: +46-31-775 88 40 Phone: +46-31-775 88 00 Fax: +46-31-775 88 01 Gsm: +46-708-447 317 Email: [email protected] http://www.todos.se ______________________________________________________________ -----Ursprungligt meddelande----- Från: [email protected] Skickat: den 28 maj 2001 18:10 Till: [email protected]; [email protected]; [email protected] Ämne: RE: TBR 21 60 mA current limiting <<Fil: ALTERNATIVE.HTM>> <<Fil: ENVELOPE.TXT>> -------------------------------------------------------------------------- -- Hi, the statement that the 60mA current limiting is no longer required for Europe is untrue in this general form. Correct is: France has executed the right to apply article 18(3) of the RTTE directive for the period of 30 months. For this period the current limiting function shall be provided with TE to be placed on the French market. Please review the commission decision 2000/373/EC. (I can forward on request). You should not issue a DoC which includes France if You do not have current limiting because this is supposed to be violation of essential requirements. The good news is that current limiting requirement cannot persist longer that 30 months after the 8. April 2000 which is 08. October 2002. Robert Robert Pausch, Regulatory Compliance Engineer and Compliance Project Manager Compaq Computer EMEA BV, Einsteinring 30, 85609 Dornach, Germany Tel: +49 (89) 9392 2352, FAX: +49 (89) 9392 2336 Mailto: [email protected] Homepage: http://emea-inline.eur.compaq.com/cpcg/loccert <http://emea-inline.eur.compaq.com/cpcg/loccert> Certificates at GRIN: http://qcare.mro.cpqcorp.net/grin/ <http://qcare.mro.cpqcorp.net/grin/> -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Thursday, May 24, 2001 4:56 AM To: [email protected]; [email protected] Subject: Re: TBR 21 60 mA current limiting In a message dated 5/23/01, David Gelfand writes: We are in the preliminary design stage for a new voice-band telephone interface. Is this current limiting requirement still mandatory? Hi David: The 60 mA current limiter is no longer mandatory in Europe. Prior to Europe's harmonization efforts, there was a 60 mA current limiter requirement in France under their national standard B1123A. When CTR 21 was created under the second phase telecom directive to replace all of the EU national standards, the 60 mA current limiter requirement (modified in ways that made it more difficult than France's national requirement) was included in CTR 21. When the new RTTE directive 99/5/EC became effective in April last year, CTR 21 ceased to be a regulatory requirement for CE marking. Under the RTTE directive that is now in effect, the only requirements that a PSTN interface must meet for CE marking are those for safety and EMC. There are no longer any regulatory requirements that specify parameters such as the DC V-I characteristic for CE marking in Europe. The only caveat is that according to France Telecom, there are still some PSTN lines in France that will not function properly if the TE does not incorporate the 60 mA limiter. They are working to eliminate these lines, but they claim it will take them until October 2002 to complete the transition. To address this problem, the European Commission has ruled that non-current limited equipment sold in France must be accompanied by a warning that it should only be used on PSTN lines that do not require current limiting. In my view, there are only three reasons why any sane person would include the current limiter in a new design: 1) They plan to sell a lot of product in France between now and October 2002. 2) They have a European customer that wants them to be "CTR 21 compliant" since that is the closest thing available to a standard PSTN specification for Europe. 3) They want to take advantage of the fact that a few non-EU countries, such as the Czech Republic, will accept CTR 21 compliance as an alternative to their national specifications. If your intended application does not meet any of the above criteria, I would recommend leaving the current limiter out. It certainly simplifies the design, and it allows you to cover more countries (such as Japan and Singapore) without having to switch the current limiter out. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 http://www.randolph-telecom.com
