Cynthia, I agree with the responses stating TBR 21 requires new application if upgrading and relabeling to V.90. But, I just upgraded software of 6 US 56K modems to V.90 via the web. They are from 4 different mfgrs and use 3 different chip sets.
Out of curiosity and to insure there were no problems I checked upgrades against Part-68 & 15. All passed easily. Although one had slightly higher EM, but still easily passed. Passing may be the function of conservative designs. I'm not sure how ETSI views a customer upgrading via the web. Obiviously the labeling still indicates 56K. But, I don't see how remote upgrades of installed modems can be prevented or controlled. I plan on upgrading and testing several existing 56K/TBR 21 modems in the next few weeks. My designs are so conservative I don't think it will have much effect. It's my understanding if a 56K label is changed to include V.90 a new TBR 21 application is required. And in some cases retesting before it can imported and/or sold. Duane >From: [email protected] >Subject: Modem question > > >I just getting started in the modem approval realm so bear >with me if I ask elementary questions. > >When you get an approval with a certain speed modem >(ie 56K) and then wish to upgrade the modem to a >higher speed (ie V90) do the agencies consider this >a new product or simply an upgrade?? Does it require >the manufacture to redo all the approval testing?? > >Thanks >Cynthia
