LADC used special unloaded lines I believe for greater bandwidth. I don't think LADC tests are appropriate for DSL. Does anyone know where the FCC is headed regarding DSL? FYI we built two LADC loop simulators, then after realized that we didn't need them.
David David Gelfand P.Eng Approvals Group Leader Memotec Communications Inc. ----- Original Message ----- From: Jon Griver <[email protected]> To: <[email protected]> Sent: Thursday, November 18, 1999 12:29 PM Subject: LADC Part 68 testing & DSL technologies > Dear Group, > > > Recently, a new DSL technology for using POTS lines for data applications > is being used. > In the new applications the telephone line is used for two purposes. It is > used as a telephone line connected to the PSTN and it is used for data > purposes between terminals (PCs for example). The specialty of this > technology is the use of existing telephone wiring. > > Two questions: > > 1) Is LADC testing the correct method for testing this technology? > > 2) Does anyone know where to buy or how to build the impedance simulator, > which is indicated in Figure 68.3(i) of 47CFR part 68? (the schematics in > the standard are not very useful, there are Zp values which are not defined > very well) > > > Thanks, > > Jon Griver > > >
