> Dear Mr. Pedersen,
> first of all some information about the CTR21/TBR21 and the > council directive 98/482/EG. > - CTR21: You will find in the CTR21/TBR21, page 8 a reference to the > advisory notes EG 201 121. In these advisory notes you will find some > national requirements for some european countries. In these advisory > notes you can find for Germany the requirement of 14dB return loss > while tone dialing. > - Council directive 98/482/EG: This council directive makes the > CTR21/TBR21 > valid for all countries of the european union. In the ANNEX 1 of this > directive you can find the reference. This reference is TBR 21: > January 1998 > (excluding the foreword). In the foreword of the TBR21 (page 8) is > the > reference on the advisery notes. > In other words, the CTR21/TBR21 is valid without the advisory notes! > Here are some answers to your questions: > to 1: Your customer has the information about the advisery notes. > But surely not all of it. (see above) > to 2: We have in all european countries a lot of discussion about > the new requirements. The CE-mark opens the european marked. > But CE is »confusing everybody« > to 3: There is no requirements in the CTR21/TBR21 about the type > and modulation of the devices. > Best regards > Franz Bergermann > fr...@doso.de > DOSO Consulting & Service > D-91575 Windsbach > Hauptstrasse 11 > Germany > Tel: +49 9871 833 > Fax: +49 9871 7699 > Hello esteemed colleagues: > I have a customer insisting that Germany has a requirement for 14dB > Return Loss for non-voice telephony analogue terminal equipment in > spite > of the recent passing of CTR 21. This particular case is a V.90 (56K) > modem. I figure either: > 1) they don't know what they are talking about (as CTR 21 is a CTR and > it specifies 8dB from 300Hz to 4kHz, and 6 dB from 200 Hz to 300Hz) or > 2) I don't know what I am talking about, or > 3) this is something particular to V.90 (56K) modem requirements that > is not harmonized that I don't know about. Is 14dB required for 56K? > And if so, is it an industry standard or a legal standard? > Any thoughts on this matter? > I thank you all in advance for your assistance. > Mel Pedersen Midcom, Inc. > Homologations Engineer Phone: (605) 882-8535 > mpeder...@midcom-inc.com Fax: (605) 882-8633
